paxtest-0.9.11/0000755000175000017500000000000012102641142012575 5ustar spenderadminpaxtest-0.9.11/getshlib.c0000644000175000017500000000147111252302514014547 0ustar spenderadmin/* getshlib.c - Get the address of a function in a shared library and print it * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #define _GNU_SOURCE #include #include #include /* OpenBSD 3.5 doesn't define RTLD_DEFAULT */ /* OpenBSD 3.6 does but it doesn't actually handle (segfaults on) RTLD_DEFAULT, sigh... */ #ifdef __OpenBSD__ #undef RTLD_DEFAULT #define RTLD_DEFAULT "libc.so" #endif int main( int argc, char *argv[] ) { void *handle; handle = dlopen( RTLD_DEFAULT, RTLD_LAZY ); if( handle != NULL ) { void *sprintf; dlerror(); /* clear any errors */ sprintf = dlsym( handle, "sprintf" ); if( dlerror() == NULL ) { printf( "%p\n", sprintf ); } dlclose( handle ); } } paxtest-0.9.11/randmain2.c0000644000175000017500000000057311335365574014644 0ustar spenderadmin/* randmain2.c - Tests the randomisation of the ET_DYN main executable * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #ifndef RUNDIR #error RUNDIR not defined #endif const char testname[] = "Main executable randomisation (PIE) "; const char testprog[] = RUNDIR"/getmain2"; paxtest-0.9.11/randstack1.c0000644000175000017500000000056411252302225015002 0ustar spenderadmin/* randstack.c - Tests the randomisation of the stack pointer. * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #ifndef RUNDIR #error RUNDIR not defined #endif const char testname[] = "Stack randomisation test (SEGMEXEC) "; const char testprog[] = RUNDIR"/getstack1"; paxtest-0.9.11/debian/0000755000175000017500000000000010407764634014041 5ustar spenderadminpaxtest-0.9.11/debian/manpage.1.ex0000644000175000017500000000353010022064622016126 0ustar spenderadmin.\" Hey, EMACS: -*- nroff -*- .\" First parameter, NAME, should be all caps .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection .\" other parameters are allowed: see man(7), man(1) .TH PAXTEST SECTION "May 19, 2003" .\" Please adjust this date whenever revising the manpage. .\" .\" Some roff macros, for reference: .\" .nh disable hyphenation .\" .hy enable hyphenation .\" .ad l left justify .\" .ad b justify to both left and right margins .\" .nf disable filling .\" .fi enable filling .\" .br insert line break .\" .sp insert n+1 empty lines .\" for manpage-specific macros, see man(7) .SH NAME paxtest \- program to do something .SH SYNOPSIS .B paxtest .RI [ options ] " files" ... .br .B bar .RI [ options ] " files" ... .SH DESCRIPTION This manual page documents briefly the .B paxtest and .B bar commands. This manual page was written for the Debian distribution because the original program does not have a manual page. Instead, it has documentation in the GNU Info format; see below. .PP .\" TeX users may be more comfortable with the \fB\fP and .\" \fI\fP escape sequences to invode bold face and italics, .\" respectively. \fBpaxtest\fP is a program that... .SH OPTIONS These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below. For a complete description, see the Info files. .TP .B \-h, \-\-help Show summary of options. .TP .B \-v, \-\-version Show version of program. .SH SEE ALSO .BR bar (1), .BR baz (1). .br The programs are documented fully by .IR "The Rise and Fall of a Fooish Bar" , available via the Info system. .SH AUTHOR This manual page was written by Peter Busser , for the Debian GNU/Linux system (but may be used by others). paxtest-0.9.11/debian/paxtest.sgml0000644000175000017500000001332310022064622016376 0ustar spenderadmin Javier"> Fernandez-Sanguino"> November 8, 2003"> 1"> jfs@computer.org"> PAXTEST"> Debian"> GNU"> ]>
&dhemail;
&dhfirstname; &dhsurname; 2003 Peter Busser &dhdate; &dhucpackage; &dhsection; &dhpackage; program to test buffer overflow protection &dhpackage; logfile DESCRIPTION &dhpackage; is a program that attempts to test kernel enforcements over memory usage. Some attacks benefit from kernels that do not impose limitations. For example, execution in some memory segments makes buffer overflows possible. It is used as a regression test suite for PaX, but might be useful to test other memory protection patches for the kernel. &dhpackage; runs a set of programs that attempt to subvert memory usage. For example: Executable anonymous mapping : Killed Executable bss : Killed Executable data : Killed Executable heap : Killed Executable stack : Killed Executable anonymous mapping (mprotect) : Killed Executable bss (mprotect) : Killed Executable data (mprotect) : Killed Executable heap (mprotect) : Killed Executable shared library bss (mprotect) : Killed Executable shared library data (mprotect): Killed Executable stack (mprotect) : Killed Anonymous mapping randomisation test : 16 bits (guessed) Heap randomisation test (ET_EXEC) : 13 bits (guessed) Heap randomisation test (ET_DYN) : 25 bits (guessed) Main executable randomisation (ET_EXEC) : No randomisation Main executable randomisation (ET_DYN) : 17 bits (guessed) Stack randomisation test (SEGMEXEC) : 23 bits (guessed) Stack randomisation test (PAGEEXEC) : 24 bits (guessed) Return to function (strcpy) : Vulnerable Return to function (strcpy, RANDEXEC) : Vulnerable Return to function (memcpy) : Vulnerable Return to function (memcpy, RANDEXEC) : Vulnerable Executable shared library bss : Killed Executable shared library data : Killed Writable text segments : Killed The Executable ... tests basically put an instruction in a place that is supposed to be data (i.e. malloced data, C variable, etc.) and tries to execute it. The (mprotect) tests try to trick the kernel in marking this piece of memory as executable first. Return to function tests overwrite the return address on the stack, these are hard to prevent from inside the kernel. The last test tries to overwrite memory which is marked as executable. A normal Linux kernel (unpatched to protect for buffer overflows) will show all tests as Vulnerable and no stack randomisation or 6 bits (due to stack colouring). In other words, on a normal Linux kernel you can execute any data inside a process's memory or overwrite any code at will. This manual page was written for the &debian; distribution because the original program does not have a manual page. OPTIONS This program takes only a single option: a file to which log all the test results (by default it will log to stdin/stdout) SEE ALSO For more information see PaX Documentation. AUTHOR &dhpackage; was written by Peter Busser. This manual page was written by &dhusername; &dhemail; for the &debian; system (but may be used by others) based on the information in the source code and Peter Busser's comments sent to public mailing lists. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Public License, Version 2 or any later version published by the Free Software Foundation. paxtest-0.9.11/debian/dirs0000644000175000017500000000002110022064622014675 0ustar spenderadminusr/bin usr/sbin paxtest-0.9.11/debian/changelog0000644000175000017500000000552112100631336015676 0ustar spenderadminpaxtest (0.9.11-1) stable; urgency=low * Added display of exhaustion tests paxtest (0.9.10-1) stable; urgency=low * Fixed compilation problem reported on forums * Added display of argv/env randomization paxtest (0.9.9-1) stable; urgency=low * added SPARC/64 support * added PPC/64 support (return to function tests should be ignored for PPC64) * added 32/64bit target support * added shellode.h to easily support additional architectures * made paxctl generate the PT_PAX_FLAGS header for binaries that didn't have one paxtest (0.9.7-1) stable; urgency=low * Fixed some tests on OpenBSD and FreeBSD (thanks to paxtest@hunger.hu and mux@freebsd.org) * Fixed return address acquisition, still gcc specific * Switched to paxctl on gentoo * Fixed setting up LD_LIBRARY_PATH in genpaxtest (Peter S. Mazinger) * Added uClibc support (Peter S. Mazinger) * Fixed the executable shared library data/bss tests (thanks to paxtest@hunger.hu) paxtest (0.9.6-1) stable; urgency=low * Made the do_mprotect() call in body.c optional, thereby introducing two modes: script kiddie mode (which does not perform the do_mprotect()) and blackhat mode, which does. * Added a README file * Added Adamantix paxtest results * Removed -etdyn from the Adamantix make file * Replaced mprotect() in body.c with pthread calls (which eventually have the same result) * Added a nested function, to measure the effect of nested functions on the level of protection. * Added paxtest result from Gentoo hardened (thanks to Ned Ludd) * Added a new Makefile for Gentoo (thanks to Ned Ludd) * Fixed spelling errors (thanks to pageexec@freemail.hu) -- Peter Busser Wed, 25 Feb 2004 20:24:53 +0200 paxtest (0.9.5-1) unstable; urgency=low * Fixed the shlibbss and shlibdata tests (pageexec@freemail.hu) * Non-executable page tests expose incomplete implementations (pageexec@freemail.hu) -- Peter Busser Tue, 04 Nov 2003 16:37:26 +0200 paxtest (0.9.4-1) unstable; urgency=low * Fixed mprotanon (pageexec@freemail.hu) * Fixed rettofunc[12] (pageexec@freemail.hu) * Fixed shared library data/bss tests (pageexec@freemail.hu) * Introduced return-to-libc detection as proof-of-concept (pageexec@freemail.hu) -- Peter Busser Tue, 22 Oct 2003 21:00:05 +0200 paxtest (0.9.3-1) unstable; urgency=low * Changed e-mail addresses in source files to peter@adamantix.org * Added copyright message printing in the run script. * Upgraded to chpax v0.5 (pageexec@freemail.hu) * Split randheap in two parts, one as ET_EXEC and the other as ET_DYN -- Peter Busser Sun, 12 Oct 2003 10:58:52 +0200 paxtest (0.9.0-1) unstable; urgency=low * Initial Release. -- Peter Busser Mon, 19 May 2003 13:44:39 +0200 paxtest-0.9.11/debian/manpage.sgml.ex0000644000175000017500000001070010022064622016725 0ustar spenderadmin manpage.1'. You may view the manual page with: `docbook-to-man manpage.sgml | nroff -man | less'. A typical entry in a Makefile or Makefile.am is: manpage.1: manpage.sgml docbook-to-man $< > $@ The docbook-to-man binary is found in the docbook-to-man package. Please remember that if you create the nroff version in one of the debian/rules file targets (such as build), you will need to include docbook-to-man in your Build-Depends control field. --> FIRSTNAME"> SURNAME"> May 19, 2003"> SECTION"> peter@dev"> PAXTEST"> Debian"> GNU"> ]>
&dhemail;
&dhfirstname; &dhsurname; 2001 &dhusername; &dhdate; &dhucpackage; &dhsection; &dhpackage; program to do something &dhpackage; DESCRIPTION This manual page documents briefly the &dhpackage; and bar commands. This manual page was written for the &debian; distribution because the original program does not have a manual page. Instead, it has documentation in the &gnu; Info format; see below. &dhpackage; is a program that... OPTIONS These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below. For a complete description, see the Info files. Show summary of options. Show version of program. SEE ALSO bar (1), baz (1). The programs are documented fully by The Rise and Fall of a Fooish Bar available via the Info system. AUTHOR This manual page was written by &dhusername; &dhemail; for the &debian; system (but may be used by others). Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts. paxtest-0.9.11/debian/docs0000644000175000017500000000013210022064622014667 0ustar spenderadminCOPYING README results/Results.README results/Adamantix.kiddie results/Adamantix.blackhat paxtest-0.9.11/debian/rules0000644000175000017500000000400110022064622015070 0ustar spenderadmin#!/usr/bin/make -f # Sample debian/rules that uses debhelper. # GNU copyright 1997 to 1999 by Joey Hess. # Uncomment this to turn on verbose mode. #export DH_VERBOSE=1 # This is the debhelper compatibility version to use. export DH_COMPAT=3 # # The directory where the test programs and shared library are going to live # RUNDIR=/usr/lib/paxtest export RUNDIR # # The directory where the test script (paxtest) is going to live # BINDIR=/usr/bin export BINDIR ifneq (,$(findstring debug,$(DEB_BUILD_OPTIONS))) CFLAGS += -g endif ifeq (,$(findstring nostrip,$(DEB_BUILD_OPTIONS))) INSTALL_PROGRAM += -s endif configure: configure-stamp configure-stamp: dh_testdir # Add here commands to configure the package. touch configure-stamp build: build-stamp build-stamp: configure-stamp dh_testdir # Add here commands to compile the package. $(MAKE) -f Makefile.Adamantix #/usr/bin/docbook-to-man debian/paxtest.sgml > paxtest.1 touch build-stamp clean: dh_testdir dh_testroot rm -f build-stamp configure-stamp # Add here commands to clean up after the build process. -$(MAKE) -f Makefile.Adamantix clean dh_clean install: build dh_testdir dh_testroot dh_clean -k dh_installdirs # Add here commands to install the package into debian/paxtest. $(MAKE) -f Makefile.Adamantix install DESTDIR=$(CURDIR)/debian/paxtest # Build architecture-independent files here. binary-indep: build install # We have nothing to do by default. # Build architecture-dependent files here. binary-arch: build install dh_testdir dh_testroot # dh_installdebconf dh_installdocs dh_installexamples dh_installmenu # dh_installlogrotate # dh_installemacsen # dh_installpam # dh_installmime # dh_installinit dh_installcron dh_installman dh_installinfo # dh_undocumented dh_installchangelogs dh_link dh_strip dh_compress dh_fixperms # dh_makeshlibs dh_installdeb # dh_perl dh_shlibdeps dh_gencontrol dh_md5sums dh_builddeb binary: binary-indep binary-arch .PHONY: build clean binary-indep binary-arch binary install configure paxtest-0.9.11/debian/control0000644000175000017500000000171610022064622015430 0ustar spenderadminSource: paxtest Section: main Priority: optional Maintainer: Peter Busser Build-Depends: debhelper (>> 3.0.0), gcc, binutils Standards-Version: 3.5.2 Package: paxtest Architecture: i386 Depends: ${shlibs:Depends} Description: a-: Test suite for the PaX kernel patch PaX is a Linux kernel patch which adds much stricter control on how memory is being used by applications. A normal Linux kernel leaves the control to the application and does not implement any enforcement. Especially buffer overflow attacks benefit from the absense of kernel enforced memory control. PaX tries to do its best to enforce this control of memory used by applications, thereby making it harder to successfully exploit buffer overflows. . Paxtest provides a regression test suite that covers most (but not all) of PaX functionality. It can also be used to test other memory protection patches. . For more information about PaX, see http://pax.grsecurity.net/. paxtest-0.9.11/debian/copyright0000644000175000017500000000060710022064622015756 0ustar spenderadminpaxtest is copyright (c)2003 by Peter Busser Paxtest is licened under the terms of the GNU General Public License (GPL), version 2.0 or later, as published by the Free Software Foundation. See the file COPYING [included], /usr/share/common-licenses/GPL, or for the terms of the latest version of the GNU General Public License. paxtest-0.9.11/mprotheap.c0000644000175000017500000000210111340311650014733 0ustar spenderadmin/* mprotheap.c - Tests whether code on the heap can be executed after trying to * use mprotect() to make it executable. * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #include #include #include "body.h" #include "shellcode.h" const char testname[] = "Executable heap (mprotect) "; void doit( void ) { char *buf; fptr func; buf = malloc( MAX_SHELLCODE_LEN ); if( buf == NULL ) { fprintf( stderr, "Out of memory\n" ); exit( 1 ); } copy_shellcode(buf, SHELLCODE_RETURN); /* Try to make the buffer executable by using mprotect() */ /* Due to a FreeBSD bug PROT_READ is required */ do_mprotect( buf, SIZE_OF_SHELLCODE_RETURN, PROT_READ|PROT_EXEC ); /* Convert the pointer to a function pointer */ func = (fptr)buf; /* Call the code in the buffer */ func(); do_mprotect( buf, MAX_SHELLCODE_LEN, PROT_READ|PROT_WRITE ); /* It worked when the function returns */ itworked(); } paxtest-0.9.11/randheap1.c0000644000175000017500000000060511252302225014606 0ustar spenderadmin/* randheap1.c - Tests the randomisation of the heap of ET_EXEC main executable. * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #ifndef RUNDIR #error RUNDIR not defined #endif const char testname[] = "Heap randomisation test (ET_EXEC) "; const char testprog[] = RUNDIR"/getheap1"; paxtest-0.9.11/rettofunc1x.c0000644000175000017500000000167011340314354015234 0ustar spenderadmin/* rettofunc1.c - Tests whether return to function exploits work or not. * * Copyright (c)2003,2004 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #include #include "body.h" const char testname[] = "Return to function (strcpy, PIE) "; fptr overflow[32] = { itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, NULL }; void doit( void ) { char buf[4]; if (strlen((const char *)overflow) > sizeof(overflow[0])) { strcpy( buf, (const char *)overflow ); } else { fprintf( stderr, "paxtest: return address contains a NULL byte.\n" ); exit(1); } } paxtest-0.9.11/getstack.c0000644000175000017500000000056411252302503014553 0ustar spenderadmin/* getstack.c - Get the location of the stack and print it * (Idea by Peter Roozemaal) * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include int main( int argc, char *argv[] ){ char a; printf( "%p\n", &a ); exit( 0 ); } paxtest-0.9.11/mprotdata.c0000644000175000017500000000176611340311534014750 0ustar spenderadmin/* mprotdata.c - Tests whether code in the .data segment can be executed after * trying to use mprotect() to make it executable. * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #include #include #include "body.h" #include "shellcode.h" const char testname[] = "Executable data (mprotect) "; char buf[MAX_SHELLCODE_LEN] = SHELLCODE_RETURN_ARRAY; void doit( void ) { fptr func; copy_shellcode(buf, SHELLCODE_RETURN); /* Convert the pointer to a function pointer */ func = (fptr)&buf; /* Try to make the data executable first by using mprotect */ /* Due to an OpenBSD bug PROT_READ is required */ do_mprotect( &buf, sizeof(buf), PROT_READ|PROT_EXEC ); /* Call the code in the buffer */ func(); do_mprotect( &buf, sizeof(buf), PROT_READ|PROT_WRITE ); /* It worked when the function returns */ itworked(); } paxtest-0.9.11/rettofunc1.c0000644000175000017500000000166311337771070015056 0ustar spenderadmin/* rettofunc1.c - Tests whether return to function exploits work or not. * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #include #include "body.h" const char testname[] = "Return to function (strcpy) "; fptr overflow[32] = { itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, NULL }; void doit( void ) { char buf[4]; if (strlen((const char *)overflow) > sizeof(overflow[0])) { strcpy( buf, (const char *)overflow ); } else { fprintf( stderr, "paxtest: return address contains a NULL byte.\n" ); exit(1); } } paxtest-0.9.11/randmain1.c0000644000175000017500000000057011252302225014616 0ustar spenderadmin/* randmain1.c - Tests the randomisation of ET_EXEC main executable * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #ifndef RUNDIR #error RUNDIR not defined #endif const char testname[] = "Main executable randomisation (ET_EXEC) "; const char testprog[] = RUNDIR"/getmain1"; paxtest-0.9.11/ChangeLog0000777000175000017500000000000011413462600017444 2debian/changelogustar spenderadminpaxtest-0.9.11/execdata.c0000644000175000017500000000126311340311412014516 0ustar spenderadmin/* execdata.c - Tests whether code in the .data segment can be executed * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #include #include "body.h" #include "shellcode.h" const char testname[] = "Executable data "; char buf[MAX_SHELLCODE_LEN] = SHELLCODE_RETURN_ARRAY; void doit( void ) { fptr func; copy_shellcode(buf, SHELLCODE_RETURN); /* Convert the pointer to a function pointer */ func = (fptr)&buf; /* Call the code in the buffer */ func(); /* It worked when the function returns */ itworked(); } paxtest-0.9.11/randstack2.c0000644000175000017500000000056411252302225015003 0ustar spenderadmin/* randstack.c - Tests the randomisation of the stack pointer. * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #ifndef RUNDIR #error RUNDIR not defined #endif const char testname[] = "Stack randomisation test (PAGEEXEC) "; const char testprog[] = RUNDIR"/getstack2"; paxtest-0.9.11/crt1S.S0000644000175000017500000000153510022064622013722 0ustar spenderadmin .text .globl _start .type _start,@function _start: popl %esi movl %esp, %ecx andl $0xfffffff0, %esp call .L1 .L1: pop %ebp addl $_GLOBAL_OFFSET_TABLE_+[.-.L1],%ebp pushl %eax pushl %esp pushl %edx pushl _fini@GOT(%ebp) pushl _init@GOT(%ebp) pushl %ecx pushl %esi pushl main@GOT(%ebp) pushl .hlt@GOT(%ebp) pushl __libc_start_main@GOT(%ebp) xorl %ebp, %ebp ret .hlt: hlt .section .rodata .globl _fp_hw _fp_hw: .long 3 .size _fp_hw, 4 .type _fp_hw,@object .data .globl __data_start __data_start: .long 0 .weak data_start data_start = __data_start .section ".note.ABI-tag", "a" .align 4 .long 1f - 0f .long 3f - 2f .long 1 0: .asciz "GNU" 1: .align 4 2: .long 0 .long 2,0,0 3: .align 4 .section .rodata .globl _IO_stdin_used .align 4 _IO_stdin_used: .long 0x20001 .size _IO_stdin_used,4 .type _IO_stdin_used,@object paxtest-0.9.11/getamap.c0000644000175000017500000000114511252302565014370 0ustar spenderadmin/* getamap.c - Get the address of the first anonymous mapping * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #include #include #ifndef MAP_ANONYMOUS #define MAP_ANONYMOUS MAP_ANON #endif int main( int argc, char *argv[] ) { char *buf; buf = mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); if( buf == MAP_FAILED ) { fprintf( stderr, "mmap() returned NULL\n" ); exit( 1 ); } printf( "%p\n", buf ); exit( 0 ); } paxtest-0.9.11/mprotshdata.c0000644000175000017500000000356411340324157015306 0ustar spenderadmin/* mprotshdata.c - Tests whether code in the .data segment of a shared library * can be executed after trying to use mprotect() to make it * executable. * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #define _GNU_SOURCE #include #include #include #include #include #include "body.h" #include "shellcode.h" const char testname[] = "Executable shared library data (mprotect)"; void doit( void ) { fptr func; char *shdata, *shdata2; void *handle1, *handle2; handle1 = dlopen( "shlibtest.so", RTLD_LAZY ); if( handle1 == NULL ) { fprintf( stderr, "dlopen() returned NULL\n" ); exit( 1 ); } dlerror(); /* clear any errors */ shdata = dlsym( handle1, "shdata" ); if( dlerror() != NULL ) { fprintf( stderr, "symbol %s not found in %s\n", "shdata", "shlibtest.so" ); exit( 1 ); } handle2 = dlopen( "shlibtest2.so", RTLD_LAZY ); if( handle2 == NULL ) { fprintf( stderr, "dlopen() returned NULL\n" ); exit( 1 ); } dlerror(); /* clear any errors */ shdata2 = dlsym( handle2, "shdata2" ); if( dlerror() != NULL ) { fprintf( stderr, "symbol %s not found in %s\n", "shdata2", "shlibtest2.so" ); exit( 1 ); } copy_shellcode(shdata, SHELLCODE_RETURN); copy_shellcode(shdata2, SHELLCODE_RETURN); /* Convert the pointer to a function pointer */ func = shdata < shdata2 ? (fptr)shdata : (fptr)shdata2; /* Try to make the memory region executable by using mprotect() */ /* Due to an OpenBSD bug PROT_READ is required */ do_mprotect( func, MAX_SHELLCODE_LEN, PROT_READ|PROT_EXEC ); /* Call the code in the buffer */ func(); do_mprotect( func, MAX_SHELLCODE_LEN, PROT_READ|PROT_WRITE ); /* It worked when the function returns */ itworked(); dlclose( handle1 ); dlclose( handle2 ); } paxtest-0.9.11/README0000644000175000017500000002017112067706266013501 0ustar spenderadminPaxtest v0.9.10 README file Copyright (c)2004 by Peter Busser Additional architecture/target support & fixes by Brad Spengler This file has been released under the GNU GPL version 2 or later. History: ------- When I started the Adamantix project, one of the first things I did was to add PaX functionality to the kernel. PaX is a process memory protection patch. Anything that happens outside the kernel on a UNIX system happens inside a process. There are many attacks on the Internet that try to corrupt the process memory, in order to make it do something for which it was not intended. One example of such an attack is the so called buffer overflow attack. This kind of attack is one of the most popular at this moment. PaX protects against such attacks. Or so the author claims. When I started to add PaX to Adamantix, almost nothing happened. A few libraries broke, but that was easy to fix, and that was it. I expected many programs to break. So I started to wonder: ``Does this patch really do anything?'' Instead of speculating, I decided to write a test suite. After some time, the first version of paxtest was ready. More functionality was added. With the addition of every test, it proved that PaX was working just fine. I decided to publish paxtest, because it can be useful for other people to test the functionality of the memory protection of their system(s). Compiling paxtest: ----------------- Compiling paxtest should be quite straightforward. First unpack paxtest. Then cd into the directory. And then run one of the following: make linux (to create Linux binaries) make openbsd (to create OpenBSD binaries) (Type make to get the above list.) Running paxtest: --------------- In order to run paxtest, type the following: ./paxtest kiddie (to run paxtest in script kiddie mode) or ./paxtest blackhat (to run paxtest in blackhat mode) This will create a file paxtest.log in the current directory. Kiddie and blackhat mode: ------------------------ Paxtest provides two modes. The first mode is the so called kiddie mode, which makes paxtest behave rather nicely. This simulates the level of sophistication displayed by script kiddies. Good results in this mode do not necessarily mean that the security level of your system is high. The second mode, the blackhat mode, makes paxtest use of a few tricks to try to get around the protection of the kernel. The attacks done by paxtest in this mode can be performed in real life by attackers too. But the level of sophistication is somewhat higher than those of the kiddie mode and the chance of success is somewhat lower. But there is still a realistic chance of success. People who are concerned about the security of their systems should look at the blackhat mode results. The tests: --------- There are two types of tests in paxtest. First there are tests which try different ways to write and then run exploit code. The more different exploits are stopped, the better the protection provided by the system. Note that the tests simulate what an exploit could (and would) do, not what an application does normally. This is especially important in the mprotect tests because some people claim that normal applicatons do not do this - indeed, but that is not what these tests are about, they simulate exploits, not applications. Second, there is a number of tests that measure the randomisation of the system. Randomisation does not provide any security, but only makes it harder for the attacker to guess where to attack (it is in fact security through obscurity). It is like rearranging the furniture in a pitch dark room every time someone enters. The more random the furniture is placed, the more likely it is that someone stumbles over it. The same applies to randomisation in this context, randomisation makes it more likely that an attack does not succeed. In short: More random bits is better. Zero bits means: No randomisation. Executable anonymous mapping Executable bss Executable data Executable heap Executable stack These tests try to write data to memory and then try to execute it as if it was executable code. This is exactly what most buffer exploits do. There are five tests, each test tests one specific memory area. Executable anonymous mapping (mprotect) Executable bss (mprotect) Executable data (mprotect) Executable heap (mprotect) Executable stack (mprotect) These tests do the same as the previous tests. But now the test also tries to disable the memory protection in the kernel using mprotect(). It changes the protection status of memory. An attacker can use it to try to switch off memory protection and execute shellcode as usual. Executable shared library bss (mprotect) Executable shared library data (mprotect) These tests try to overwrite two different data areas in a shared library. After that, it tries to execute the data as if it was code. Again, these tests try to switch off the memory protection using mprotect(). Anonymous mapping randomisation test Anonymous mappings are used for dynamically allocating memory in a program. This test tries to figure out the number of random bits used when such an anonymous mapping is requested. More bits is better. Heap randomisation test (ET_EXEC) Heap randomisation test (ET_DYN) The heap is used for allocating small chunks of memory in a program. There there are two different types of executables, ET_EXEC (normal executables) and ET_DYN (basically executable shared libraries). The randomisation can depend on the kind of executable, therefore there are two tests. Most Linux distributions ship with ET_EXEC executables only. So for those the ET_EXEC randomisation is the most relevant. Adamantix ships with mostly ET_DYN executables, so the ET_EXEC randomisation is not very relevant, but the ET_DYN randomisation is. Normally ET_DYN randomisation is bigger than the ET_EXEC randomisation. Main executable randomisation (ET_EXEC) Main executable randomisation (ET_DYN) Same here, two tests, because the two different types of executables can have different randomisation. Shared library randomisation test Shared libraries can be located at random addresses too, which is what this test tries to find out. Stack randomisation test (SEGMEXEC) Stack randomisation test (PAGEEXEC) The stack is used for storing intermediate data. It also contains addresses that influence the way programs run. That combination makes the stack a popular memory area for attacks. Randomisation makes it harder though, which is what these test try to find out. Return to function (strcpy) Return to function (strcpy, RANDEXEC) Return to function (memcpy) Return to function (memcpy, RANDEXEC) Return to function attacks are very nasty. These tests are hard to stop by kernel patches, but they show that there you should not expect perfect protection from this kind of security patches. Executable shared library bss Executable shared library data These tests try to overwrite two different data areas in a shared library. After that, it tries to execute the data as if it was code. Writable text segments When an attacker can overwrite code, he can basically alter the program while it runs. This test tries to do that. Perfect protection: ------------------ Perfect protection is not possible. That is also the reason why there are so called return to function tests in paxtest. PaX does not prevent return to function attacks. Neither do any of the other memory protection patches. But it is important that people who use kernel patches like PaX do not get a false sense of security. As the PaX documentation points out: There are three different classes of attacks, and at this moment PaX can only guarantee protection against one of them. Further reading: --------------- PaX home page: http://pax.grsecurity.net/ PaX mailing list: http://lists.adamantix.org/ PaX documentation (also a thorough introduction into memory protection): http://pax.grsecurity.net/docs/ An article I wrote about PaX has been published in Linux Magazine. The whole article is available on-line as PDF. It is not very technical, but describes what memory protection is and why it is important. It can be found here: http://www.linux-magazine.com/issue/40 paxtest-0.9.11/shlibtest.c0000644000175000017500000000063411337767543014774 0ustar spenderadmin/* shlibtest.c - Shared library used by the shared library tests. * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include "shellcode.h" char shbss[4096]; char shdata[4096] = SHELLCODE_RETURN_ARRAY; /* A function which does nothing, it only exists so it can be referenced */ int shlibtest( void ) { return 1; } paxtest-0.9.11/randarg1.c0000644000000000000000000000035111726563004013636 0ustar rootroot/* randarg.c - Tests the randomisation of arguments/environment * */ #ifndef RUNDIR #error RUNDIR not defined #endif const char testname[] = "Arg/env randomisation test (SEGMEXEC) "; const char testprog[] = RUNDIR"/getarg1"; paxtest-0.9.11/randshlib.c0000644000175000017500000000056711252302225014720 0ustar spenderadmin/* randshlib.c - Tests the randomisation of shared library loading * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #ifndef RUNDIR #error RUNDIR not defined #endif const char testname[] = "Shared library randomisation test "; const char testprog[] = RUNDIR"/getshlib"; paxtest-0.9.11/getarg.c0000644000000000000000000000027311726562066013422 0ustar rootroot/* getarg.c - Get the location of an argument and print it * */ #include #include int main( int argc, char *argv[] ){ printf( "%p\n", argv[0] ); exit( 0 ); } paxtest-0.9.11/results/0000755000175000017500000000000010132506050014275 5ustar spenderadminpaxtest-0.9.11/results/Gentoo.blackhat0000644000175000017500000000326610022064622017234 0ustar spenderadminPaXtest - Copyright(c) 2003,2004 by Peter Busser Released under the GNU Public Licence version 2 or later Mode: blackhat Linux simple 2.4.24-grsec-1.9.13 #3 Wed Jan 14 00:48:25 EST 2004 i686 Intel(R) Pentium(R) 4 CPU 1400MHz GenuineIntel GNU/Linux Executable anonymous mapping : Killed Executable bss : Killed Executable data : Killed Executable heap : Killed Executable stack : Killed Executable anonymous mapping (mprotect) : Killed Executable bss (mprotect) : Killed Executable data (mprotect) : Killed Executable heap (mprotect) : Killed Executable stack (mprotect) : Killed Executable shared library bss (mprotect) : Killed Executable shared library data (mprotect): Killed Writable text segments : Killed Anonymous mapping randomisation test : 16 bits (guessed) Heap randomisation test (ET_EXEC) : 13 bits (guessed) Heap randomisation test (ET_DYN) : 25 bits (guessed) Main executable randomisation (ET_EXEC) : 16 bits (guessed) Main executable randomisation (ET_DYN) : 17 bits (guessed) Shared library randomisation test : 16 bits (guessed) Stack randomisation test (SEGMEXEC) : 23 bits (guessed) Stack randomisation test (PAGEEXEC) : 24 bits (guessed) Return to function (strcpy) : Vulnerable Return to function (memcpy) : Vulnerable Return to function (strcpy, RANDEXEC) : Killed Return to function (memcpy, RANDEXEC) : Killed Executable shared library bss : Killed Executable shared library data : Killed paxtest-0.9.11/results/Adamantix.kiddie0000644000175000017500000000320610022064622017361 0ustar spenderadminPaXtest - Copyright(c) 2003,2004 by Peter Busser Released under the GNU Public Licence version 2 or later Mode: kiddie Linux devbox 2.4.22-1-k7-sec #1 Mon Jan 26 02:12:39 CET 2004 i686 unknown Executable anonymous mapping : Killed Executable bss : Killed Executable data : Killed Executable heap : Killed Executable stack : Killed Executable anonymous mapping (mprotect) : Killed Executable bss (mprotect) : Killed Executable data (mprotect) : Killed Executable heap (mprotect) : Killed Executable shared library bss (mprotect) : Killed Executable shared library data (mprotect): Killed Executable stack (mprotect) : Killed Anonymous mapping randomisation test : 16 bits (guessed) Heap randomisation test (ET_EXEC) : 25 bits (guessed) Heap randomisation test (ET_DYN) : 25 bits (guessed) Main executable randomisation (ET_EXEC) : No randomisation Main executable randomisation (ET_DYN) : 17 bits (guessed) Shared library randomisation test : 16 bits (guessed) Stack randomisation test (SEGMEXEC) : 23 bits (guessed) Stack randomisation test (PAGEEXEC) : 24 bits (guessed) Return to function (strcpy) : Vulnerable Return to function (strcpy, RANDEXEC) : Vulnerable Return to function (memcpy) : Vulnerable Return to function (memcpy, RANDEXEC) : Vulnerable Executable shared library bss : Killed Executable shared library data : Killed Writable text segments : Killed paxtest-0.9.11/results/Results.README0000644000175000017500000000112210022064622016613 0ustar spenderadminThe Adamantix paxtest results are generated by running paxtest on a default kernel configuration. The Adamantix default configuration does not enable randomisation of normal executables (the so called ET_EXEC files), because it costs performance and there are only a few executables of this type anyway. The Gentoo results show what is possible when a kernel is configured by hand and all PaX features are enabled (there is no default kernel configuration in Gentoo, or so the Gentoo developers say). It includes ET_EXEC randomisation, which also prevents certain return to function attacks. paxtest-0.9.11/results/Adamantix.blackhat0000644000175000017500000000321010022064622017674 0ustar spenderadminPaXtest - Copyright(c) 2003,2004 by Peter Busser Released under the GNU Public Licence version 2 or later Mode: blackhat Linux devbox 2.4.22-1-k7-sec #1 Mon Jan 26 02:12:39 CET 2004 i686 unknown Executable anonymous mapping : Killed Executable bss : Killed Executable data : Killed Executable heap : Killed Executable stack : Killed Executable anonymous mapping (mprotect) : Killed Executable bss (mprotect) : Killed Executable data (mprotect) : Killed Executable heap (mprotect) : Killed Executable shared library bss (mprotect) : Killed Executable shared library data (mprotect): Killed Executable stack (mprotect) : Killed Anonymous mapping randomisation test : 16 bits (guessed) Heap randomisation test (ET_EXEC) : 25 bits (guessed) Heap randomisation test (ET_DYN) : 25 bits (guessed) Main executable randomisation (ET_EXEC) : No randomisation Main executable randomisation (ET_DYN) : 17 bits (guessed) Shared library randomisation test : 16 bits (guessed) Stack randomisation test (SEGMEXEC) : 23 bits (guessed) Stack randomisation test (PAGEEXEC) : 24 bits (guessed) Return to function (strcpy) : Vulnerable Return to function (strcpy, RANDEXEC) : Vulnerable Return to function (memcpy) : Vulnerable Return to function (memcpy, RANDEXEC) : Vulnerable Executable shared library bss : Killed Executable shared library data : Killed Writable text segments : Killed paxtest-0.9.11/getexhaust0000755000000000000000000002200412100302500014054 0ustar rootrootELF44 (44p4p  444ppHHHDDPtdQtde`jELF44 (444444HHHDDPtdQtd/lib/ld-linux.so.2GNUGNUnM]RDQ~Q K) 0<5__gmon_start__libc.so.6_IO_stdin_usedprintfmmapmunmap__libc_start_mainGLIBC_2.0ii Nhx|US[\t:X[5p%t%xh%|h%h%h%h US D$D$D$ "D$D$$D$D$D$ "D$D$$Ruʼn$D$]D$D$D$ "D$D$$ $D$1]Ð1^PTRh@hPQVhUS=u?댖9s9r[]Ít&'Utt $ÐU]Ít&'UWVSO)t$1ED$E D$E$9rރ[^_]Ë$ÐUStfЋu[]ÐUS[ÄY[%p ;<4XzR|  `F J tx?;*2$" @<AB v   ܅oL܁ X l(܂ԂoooVfvGCC: (Debian 4.6.3-1) 4.6.3GCC: (Debian 4.4.7-3) 4.4.7.symtab.strtab.shstrtab.interp.note.ABI-tag.note.gnu.build-id.gnu.hash.dynsym.dynstr.gnu.version.gnu.version_r.rel.dyn.rel.plt.init.text.fini.rodata.eh_frame_hdr.eh_frame.ctors.dtors.jcr.dynamic.got.got.plt.data.bss.comment44#HH 1hh$H0Do N ܁pVLLX^oko z Ԃ ܂( 0@@`<܅   dhhll 08@. !$4Hh܁L Ԃ ܂  @ ܅ hl (5KZhtl@( 3EL܅R_l {PZ   crtstuff.c__CTOR_LIST____DTOR_LIST____JCR_LIST____do_global_dtors_auxcompleted.5514dtor_idx.5516frame_dummy__CTOR_END____FRAME_END____JCR_END____do_global_ctors_auxgetexhaust.c__init_array_end_DYNAMIC__init_array_start_GLOBAL_OFFSET_TABLE___libc_csu_fini__i686.get_pc_thunk.bxdata_startprintf@@GLIBC_2.0_edata_fini__DTOR_END____data_start__gmon_start____dso_handle_IO_stdin_usedmmap@@GLIBC_2.0__libc_start_main@@GLIBC_2.0__libc_csu_init_end_start_fp_hw__bss_startmainmunmap@@GLIBC_2.0_Jv_RegisterClasses_initpaxtest-0.9.11/randarg2.c0000644000000000000000000000035111726563012013636 0ustar rootroot/* randarg.c - Tests the randomisation of arguments/environment * */ #ifndef RUNDIR #error RUNDIR not defined #endif const char testname[] = "Arg/env randomisation test (PAGEEXEC) "; const char testprog[] = RUNDIR"/getarg2"; paxtest-0.9.11/getmain.c0000644000175000017500000000057011252302225014370 0ustar spenderadmin/* getmain.c - Get the address of the main function and print it * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include void foo(void) { printf( "%p\n", __builtin_return_address(0) ); } int main( int argc, char *argv[] ) { foo(); exit(0); } paxtest-0.9.11/mprotstack.c0000644000175000017500000000154611340312052015134 0ustar spenderadmin/* mprotstack.c - Tests whether code on the stack can be executed after trying * to make it executable by using mprotect(). * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #include #include #include "body.h" #include "shellcode.h" const char testname[] = "Executable stack (mprotect) "; void doit( void ) { char buf[MAX_SHELLCODE_LEN]; fptr func; copy_shellcode(buf, SHELLCODE_RETURN); /* Convert the pointer to a function pointer */ func = (fptr)&buf; /* Try to make the stack executable first */ do_mprotect( &buf, sizeof(buf), PROT_READ|PROT_WRITE|PROT_EXEC ); /* Call the code in the buffer */ func(); /* It worked when the function returns */ itworked(); } paxtest-0.9.11/randexhaust2.c0000644000000000000000000000046612100630772014550 0ustar rootroot/* randexhaust2.c - Tests the randomisation under memory exhaustion * when trying to get a fixed address at the bottom of the address space */ #ifndef RUNDIR #error RUNDIR not defined #endif const char testname[] = "Randomization under memory exhaustion @0 "; const char testprog[] = RUNDIR"/getexhaust2"; paxtest-0.9.11/mprotbss.c0000644000175000017500000000172711340310711014617 0ustar spenderadmin/* mprotbss.c - Tests whether code in the .bss segment can be executed after * trying to use mprotect() to make it executable * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #include #include #include "body.h" #include "shellcode.h" const char testname[] = "Executable bss (mprotect) "; char buf[MAX_SHELLCODE_LEN]; void doit( void ) { fptr func; copy_shellcode(buf, SHELLCODE_RETURN); /* Convert the pointer to a function pointer */ func = (fptr)&buf; /* Try to make the bss executable first by using mprotect */ /* Due to a FreeBSD bug PROT_READ is required */ do_mprotect( &buf, sizeof(buf), PROT_READ|PROT_EXEC ); /* Call the code in the buffer */ func(); do_mprotect( &buf, sizeof(buf), PROT_READ|PROT_WRITE ); /* It worked when the function returns */ itworked(); } paxtest-0.9.11/getexhaust2.c0000644000000000000000000000245712102641120014374 0ustar rootroot#include #include #include int main(void) { char *addr; int can_map_above_stack = 0; char **maps; unsigned int num_maps = 0; /* return normal mmap randomization on 64bit systems */ if (sizeof(unsigned long) == 8) { addr = mmap(NULL, 0x1000, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); goto out; } maps = (char **)calloc(1024 * 1024, sizeof(char *)); while (1) { addr = mmap(NULL, 0x1000, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); if (addr == 0xffffffff) break; if (addr > (char *)&addr) can_map_above_stack = 1; maps[num_maps++] = addr; } if (!can_map_above_stack) { /* upper end is randomized due to the stack base and PROT_NONE gap inserted above stack */ unsigned int map_size = 0x1000; while (1) { munmap(maps[--num_maps], 0x1000); addr = mmap(NULL, map_size, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); if (addr == 0xffffffff) break; munmap(addr, map_size); map_size += 0x1000; } /* can't insert any bigger mapping, filled mmap -> stack gap, next deallocation is lowest mappable address */ } munmap(maps[num_maps - 1], 0x1000); addr = mmap(NULL, 0x1000, PROT_READ | PROT_EXEC, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); out: printf("%p\n", addr); return 0; } paxtest-0.9.11/shlibbss.c0000644000175000017500000000301711340323000014544 0ustar spenderadmin/* shlibbss.c - Tests whether code in the .bss segment of a shared library can * be executed * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #define _GNU_SOURCE #include #include #include #include #include "body.h" #include "shellcode.h" const char testname[] = "Executable shared library bss "; void doit( void ) { char *shbss; char *shbss2; fptr func; void *handle1, *handle2; handle1 = dlopen( "shlibtest.so", RTLD_LAZY ); if( handle1 == NULL ) { fprintf( stderr, "dlopen() returned NULL\n" ); exit( 1 ); } dlerror(); /* clear any errors */ shbss = dlsym( handle1, "shbss" ); if( dlerror() != NULL ) { fprintf( stderr, "symbol %s not found in %s\n", "shbss", "shlibtest.so" ); exit( 1 ); } handle2 = dlopen( "shlibtest2.so", RTLD_LAZY ); if( handle2 == NULL ) { fprintf( stderr, "dlopen() returned NULL\n" ); exit( 1 ); } dlerror(); /* clear any errors */ shbss2 = dlsym( handle2, "shbss2" ); if( dlerror() != NULL ) { fprintf( stderr, "symbol %s not found in %s\n", "shbss2", "shlibtest2.so" ); exit( 1 ); } copy_shellcode(shbss, SHELLCODE_RETURN); copy_shellcode(shbss2, SHELLCODE_RETURN); /* Convert the pointer to a function pointer */ func = shbss < shbss2 ? (fptr)shbss : (fptr)shbss2; /* Call the code in the buffer */ func(); /* It worked when the function returns */ itworked(); dlclose( handle1 ); dlclose( handle2 ); } paxtest-0.9.11/interp.c0000644000175000017500000000035211252302225014243 0ustar spenderadmin#ifdef __UCLIBC__ const char __invoke_dynamic_linker__[] __attribute__ ((section (".interp"))) = "/lib/ld-uClibc.so.0"; #else const char __invoke_dynamic_linker__[] __attribute__ ((section (".interp"))) = "/lib/ld-linux.so.2"; #endif paxtest-0.9.11/getexhaust1.c0000644000000000000000000000116312102641054014372 0ustar rootroot#include #include #include int main(void) { char *addr; char *last_addr; /* return normal mmap randomization on 64bit systems */ if (sizeof(unsigned long) == 8) { addr = mmap(NULL, 0x1000, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); goto out; } while (1) { addr = mmap(NULL, 0x1000, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); if (addr == 0xffffffff) break; last_addr = addr; } munmap(last_addr, 0x1000); addr = mmap(NULL, 0x1000, PROT_READ | PROT_EXEC, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); out: printf("%p\n", addr); return 0; } paxtest-0.9.11/COPYING0000644000175000017500000004312710022064622013640 0ustar spenderadmin GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. 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It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) 19yy This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: Gnomovision version 69, Copyright (C) 19yy name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker. , 1 April 1989 Ty Coon, President of Vice This General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Library General Public License instead of this License. paxtest-0.9.11/shlibtest2.c0000644000175000017500000000064111337767551015053 0ustar spenderadmin/* shlibtest2.c - Shared library used by the shared library tests. * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include "shellcode.h" char shbss2[4096]; char shdata2[4096] = SHELLCODE_RETURN_ARRAY; /* A function which does nothing, it only exists so it can be referenced */ int shlibtest2( void ) { return 1; } paxtest-0.9.11/writetext.c0000644000175000017500000000257211252302225015007 0ustar spenderadmin/* writetext.c - Test whether a .text sections can be written * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #include #include #include #include #include "body.h" const char testname[] = "Writable text segments "; extern int shlibtest( void ); static void sigsegv( int sig ) { printf( "Killed\n" ); exit( 1 ); } void doit( void ) { char *buf; char c; buf = (char*)shlibtest; signal( SIGSEGV, sigsegv ); /* Try to make the text writable first by using mprotect * * Some people like to disable this call to make the results look * better for their system. * * The purpose of the mprotect() here is to *really* try to write to * that piece of executable memory. If you want to know whether a box * can be opened or not, you try to pull it open. Just looking at it, * seeing that it is closed, and therefore concluding that it cannot * be opened is rather lame. * * But then, it is of course easier to get good paxtest results by * disabling this mprotect than to fix your kernel code and userland. */ do_mprotect( buf, 4096, PROT_READ|PROT_WRITE|PROT_EXEC ); /* Try to write something */ *buf = 'X'; /* It worked when the function returns */ itworked(); } paxtest-0.9.11/genpaxtest0000644000175000017500000000230010235533171014704 0ustar spenderadmin#!/bin/sh # # Script to run all the PaX memory protection tests # # Copyright(c) 2003,2004 by Peter Busser # This file has been released under the GNU Public Licence version 2 or later. # See the file COPYING for details. # echo $RUNDIR if [ "${RUNDIR}" = "" ] then RUNDIR=. fi cat << __here__ > paxtest #!/bin/sh if [ \$# = 1 ] then if [ "\$1" = "kiddie" ] then PAXTEST_MODE=0 elif [ "\$1" = "blackhat" ] then PAXTEST_MODE=1 else echo "usage: paxtest [kiddie|blackhat]" exit 1 fi else echo "usage: paxtest [kiddie|blackhat]" exit 1 fi export PAXTEST_MODE if [ "\${LD_LIBRARY_PATH}" = "" ] then LD_LIBRARY_PATH=${RUNDIR} else LD_LIBRARY_PATH=\${LD_LIBRARY_PATH}:${RUNDIR} fi export LD_LIBRARY_PATH cat <<__end__ | tee paxtest.log PaXtest - Copyright(c) 2003,2004 by Peter Busser Released under the GNU Public Licence version 2 or later __end__ echo "Mode: \$1" >>paxtest.log uname -a >>paxtest.log echo >>paxtest.log echo 'Writing output to paxtest.log' echo 'It may take a while for the tests to complete' for i in $* do ${RUNDIR}/\$i done >>paxtest.log 2>&1 echo "Test results:" cat paxtest.log echo __here__ chmod 755 paxtest exit 0 paxtest-0.9.11/randheap2.c0000644000175000017500000000060111335365520014614 0ustar spenderadmin/* randheap2.c - Tests the randomisation of the heap of PIE main executable. * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #ifndef RUNDIR #error RUNDIR not defined #endif const char testname[] = "Heap randomisation test (PIE) "; const char testprog[] = RUNDIR"/getheap2"; paxtest-0.9.11/body.c0000644000175000017500000000406111460170200013675 0ustar spenderadmin/* body.c - This part is shared by the test programs (except for the randomisation * tests) * * Copyright (c)2003,2004 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #include #include #include #include #include #include #include #include #include extern int doit( void ); extern const char testname[]; static void *test_thread(void *p) { pause(); return NULL; } int main( int argc, char *argv[] ) { int status; char *mode; /* This defaults to 1 as a safety mechanism. It is better to fail in * blackhat mode, because kiddie mode can produce overly optimistic * results. */ int paxtest_mode = 1; /* Dummy nested function */ void dummy(void) {} mode = getenv( "PAXTEST_MODE" ); if( mode == NULL ) { paxtest_mode = 1; } else { if( strcmp(mode,"0") == 0 ) { paxtest_mode = 0; } else if( strcmp(mode,"1") == 0 ) { paxtest_mode = 1; } } printf( "%s: ", testname ); fflush( stdout ); if( fork() == 0 ) { /* Perform a dirty (but not unrealistic) trick to circumvent * the kernel protection. */ if( paxtest_mode == 1 ) { pthread_t thread; pthread_create(&thread, NULL, test_thread, dummy); doit(); pthread_kill(thread, SIGTERM); } else { doit(); } } else { wait( &status ); if( WIFEXITED(status) == 0 ) { printf( "Killed\n" ); exit( 0 ); } } exit( 0 ); } void itworked( void ) { printf( "Vulnerable\n" ); exit( 1 ); } void itfailed( void ) { printf( "Ok\n" ); exit( 2 ); } int do_mprotect( const void *addr, size_t len, int prot ) { void *ptr; int retval; long PAGESIZE = sysconf(_SC_PAGESIZE); /* Allign to a multiple of PAGESIZE, assumed to be a power of two */ ptr = (char *)(((unsigned long) addr) & ~(PAGESIZE-1)); retval = mprotect( ptr, len, prot ); if( retval != 0 && (errno == EINVAL)) { perror( "could not mprotect():" ); exit( 1 ); } return retval; } paxtest-0.9.11/randexhaust1.c0000644000000000000000000000047112100631000014524 0ustar rootroot/* randexhaust1.c - Tests the randomization under memory exhaustion * when trying to get a fixed address at the upper end of the address space */ #ifndef RUNDIR #error RUNDIR not defined #endif const char testname[] = "Randomization under memory exhaustion @~0"; const char testprog[] = RUNDIR"/getexhaust1"; paxtest-0.9.11/chpax-0.7/0000750000175000017500000000000011460164247014211 5ustar spenderadminpaxtest-0.9.11/chpax-0.7/io.c0000640000175000017500000000501211335365306014763 0ustar spenderadmin/* ** io.c for chpax ** ** The PaX project : http://pax.grsecurity.net/ ** */ #include "chpax.h" #ifndef EM_X86_64 #define EM_X86_64 62 #endif /* Read flags */ int read_header(char *name, int flags) { char *ptr; int size; int block; if ((fd = open(name, flags)) < 0) return 1; ptr = (char *) &header_elf64; size = sizeof(header_elf64); do { block = read(fd, ptr, size); if (block <= 0) return (block ? 1 : 2); ptr += block; size -= block; } while (size > 0); memcpy(&header_aout, &header_elf64, sizeof(header_aout)); memcpy(&header_elf, &header_elf64, sizeof(header_elf)); if (!memcmp(header_elf64.e_ident, ELFMAG, SELFMAG) && FILE_IS_ELF64(header_elf64)) { if (header_elf64.e_type != ET_EXEC && header_elf.e_type != ET_DYN) return 2; if (header_elf64.e_machine != EM_SPARC && header_elf64.e_machine != EM_SPARCV9 && header_elf64.e_machine != EM_ALPHA && header_elf64.e_machine != EM_X86_64 && header_elf64.e_machine != EM_IA_64 && header_elf64.e_machine != EM_PPC64) return 3; header = &header_elf64; header_size = sizeof(header_elf64); get_flags = get_flags_elf64; put_flags = put_flags_elf64; } else if (!memcmp(header_elf.e_ident, ELFMAG, SELFMAG) && FILE_IS_ELF32(header_elf)) { if (header_elf.e_type != ET_EXEC && header_elf.e_type != ET_DYN) return 2; if (header_elf.e_machine != EM_386 && header_elf.e_machine != EM_SPARC && header_elf.e_machine != EM_SPARC32PLUS && header_elf.e_machine != EM_PARISC && header_elf.e_machine != EM_PPC && header_elf.e_machine != EM_MIPS && header_elf.e_machine != EM_MIPS_RS3_LE) return 3; header = &header_elf; header_size = sizeof(header_elf); get_flags = get_flags_elf; put_flags = put_flags_elf; } else if (N_MAGIC(header_aout) == NMAGIC || N_MAGIC(header_aout) == ZMAGIC || N_MAGIC(header_aout) == QMAGIC) { if (N_MACHTYPE(header_aout) != M_386) return 3; header = &header_aout; header_size = 4; get_flags = get_flags_aout; put_flags = put_flags_aout; } else return (2); return (0); } /* Write flags */ int write_header() { char *ptr; int size; int block; if ((off_t)-1 == lseek(fd, 0, SEEK_SET)) return 1; ptr = (char *) header; size = header_size; do { block = write(fd, ptr, size); if (block <= 0) break; ptr += block; size -= block; } while (size > 0); return size; } paxtest-0.9.11/chpax-0.7/aout.c0000640000175000017500000000041607774375573015352 0ustar spenderadmin/* ** aout.c for chpax ** ** The PaX project : http://pax.grsecurity.net/ ** */ #include "chpax.h" unsigned long get_flags_aout() { return (N_FLAGS(header_aout)); } void put_flags_aout(unsigned long flags) { N_SET_FLAGS(header_aout, flags & ~HF_PAX_RANDMMAP); } paxtest-0.9.11/chpax-0.7/elf64.c0000640000175000017500000000071307774375573015322 0ustar spenderadmin/* ** elf64.c for chpax ** ** The PaX project : http://pax.grsecurity.net/ ** */ #include "chpax.h" unsigned long get_flags_elf64() { u_long flags; flags = ((u_long) header_elf64.e_ident[EI_PAX + 1] << 8) + (u_long) header_elf.e_ident[EI_PAX]; return (flags); } void put_flags_elf64(unsigned long flags) { header_elf64.e_ident[EI_PAX] = (flags & 0xFF); header_elf64.e_ident[EI_PAX + 1] = ((flags >> 8) & 0xFF); } paxtest-0.9.11/chpax-0.7/chpax.10000640000175000017500000000357107774375573015430 0ustar spenderadmin.\" -*- nroff -*- .\" .\" chpax.1 .\" .\" This program was written by .\" The PaX Team .\" .\" This manpage was created by: .\" Martin Krafft [ ...] .SH DESCRIPTION \fBchpax\fR is a tool that allows PaX flags to be modified on a per-binary basis. PaX is part of common security-enhancing kernel patches, like GrSecurity. Your system needs to be running an appropriately patched kernel for this program to have any effect. .TP \fB-P\fR enforce paging based non-executable pages .TP \fB-p\fR do not enforce paging based non-executable pages .TP \fB-E\fR emulate trampolines .TP \fB-e\fR do not emulate trampolines .TP \fB-M\fR restrict mprotect() .TP \fB-m\fR do not restrict mprotect() .TP \fB-R\fR randomize mmap() base .TP \fB-r\fR do not randomize mmap() base .TP \fB-X\fR randomize ET_EXEC base .TP \fB-x\fR do not randomize ET_EXEC base .TP \fB-S\fR enforce segmentation based non-executable pages .TP \fB-s\fR do not enforce segmentation based non-executable pages .TP \fB-v\fR view current flag mask .TP \fB-z\fR zero flag mask (next flags still apply) .SH CAVEATS \fBchpax\fR does not currently parse standard command line arguments. Only the first argument is parsed, and it must contain all of the above flags you wish to use. So, instead of, e.g., "-v -p -r" you have to use "-vpr". .SH AUTHOR Written by The PaX Team .PP This manpage was written by Martin F. Krafft for the Debian GNU/Linux Distribution, but may be used by others. .SH "SEE ALSO" .BR gradm (1) .PP The PaX website: http://pax.grsecurity.net .PP The GrSecurity website: http://www.grsecurity.net paxtest-0.9.11/chpax-0.7/flags.c0000640000175000017500000000644207774375573015503 0ustar spenderadmin/* ** flags.c for chpax ** ** The PaX project : http://pax.grsecurity.net/ ** */ #include "chpax.h" #define USAGE \ "%s %s .::. Manage PaX flags for binaries\n" \ "Usage: %s OPTIONS FILE1 FILE2 FILEN ...\n" \ " -P\tenforce paging based non-executable pages\n" \ " -p\tdo not enforce paging based non-executable pages\n" \ " -E\temulate trampolines\n" \ " -e\tdo not emulate trampolines\n" \ " -M\trestrict mprotect()\n" \ " -m\tdo not restrict mprotect()\n" \ " -R\trandomize mmap() base [ELF only]\n" \ " -r\tdo not randomize mmap() base [ELF only]\n" \ " -X\trandomize ET_EXEC base [ELF only]\n" \ " -x\tdo not randomize ET_EXEC base [ELF only]\n" \ " -S\tenforce segmentation based non-executable pages\n" \ " -s\tdo not enforce segmentation based non-executable pages\n" \ " -v\tview current flag mask \n" \ " -z\tzero flag mask (next flags still apply)\n\n" \ "The flags only have effect when running the patched Linux kernel.\n" \ void usage(char *name) { char *ptr; ptr = (name ? name : "chpax"); printf(USAGE, ptr, CHPAX_VERSION, ptr); exit(1); } unsigned long scan_flags(unsigned long flags, char **argv, int *view) { int index; for (index = 1; argv[1][index]; index++) switch (argv[1][index]) { case 'p': flags |= HF_PAX_PAGEEXEC; continue ; case 'P': flags = (flags & ~HF_PAX_PAGEEXEC) | HF_PAX_SEGMEXEC; continue ; case 'E': flags |= HF_PAX_EMUTRAMP; continue ; case 'e': flags = (flags & ~HF_PAX_EMUTRAMP); continue ; case 'm': flags |= HF_PAX_MPROTECT; continue ; case 'M': flags = (flags & ~HF_PAX_MPROTECT); continue ; case 'r': flags |= HF_PAX_RANDMMAP; continue ; case 'R': flags = (flags & ~HF_PAX_RANDMMAP); continue ; case 'X': flags |= HF_PAX_RANDEXEC; continue ; case 'x': flags = (flags & ~HF_PAX_RANDEXEC); continue ; case 's': flags |= HF_PAX_SEGMEXEC; continue ; case 'S': flags = (flags & ~HF_PAX_SEGMEXEC) | HF_PAX_PAGEEXEC; continue ; case 'v': *view = 1; continue ; case 'z': flags = 0; continue ; default: fprintf(stderr, "Unknown option %c \n", argv[1][index]); usage(argv[0]); } return (flags); } char *pax_short_flags(unsigned long flags) { static char buffer[7]; buffer[0] = (flags & HF_PAX_PAGEEXEC ? 'p' : 'P'); buffer[1] = (flags & HF_PAX_EMUTRAMP ? 'E' : 'e'); buffer[2] = (flags & HF_PAX_MPROTECT ? 'm' : 'M'); buffer[3] = (flags & HF_PAX_RANDMMAP ? 'r' : 'R'); buffer[4] = (flags & HF_PAX_RANDEXEC ? 'X' : 'x'); buffer[5] = (flags & HF_PAX_SEGMEXEC ? 's' : 'S'); return buffer; } void print_flags(unsigned long flags) { printf(" * Paging based PAGE_EXEC : %s \n" " * Trampolines : %s \n" " * mprotect() : %s \n" " * mmap() base : %s \n" " * ET_EXEC base : %s \n" " * Segmentation based PAGE_EXEC : %s \n", flags & HF_PAX_PAGEEXEC ? "disabled" : flags & HF_PAX_SEGMEXEC ? "enabled" : "enabled (overridden)", flags & HF_PAX_EMUTRAMP ? "emulated" : "not emulated", flags & HF_PAX_MPROTECT ? "not restricted" : "restricted", flags & HF_PAX_RANDMMAP ? "not randomized" : "randomized", flags & HF_PAX_RANDEXEC ? "randomized" : "not randomized", flags & HF_PAX_SEGMEXEC ? "disabled" : "enabled"); } paxtest-0.9.11/chpax-0.7/README0000640000175000017500000000050607617363101015072 0ustar spenderadmin ----------------- CHPAX README FILE ----------------- As you can see, chpax has been partially rewritten . Since ELF64 is now supported (so that we match the Linux-PAX/sparc64 needs), we had to start a modularization of the code . For all the technical details about the improvements, check the Changelog file . paxtest-0.9.11/chpax-0.7/Changelog0000640000175000017500000000136210066106417016022 0ustar spenderadmin * * Nov 2002 : Added multi{options,files} cmdline, zeroflag, nicer output * (+ double output if flags are changed and -v is specified), more error * handling, more explicit error messages and return values * * Jan 2003 : Packaging, Port to Sparc/ELF64 : flags now stand in e_ident[EI_PAX] and * e_ident[EI_PAX + 1], old chpax version is needed for clearing old flags . * * Feb 2003: Added alpha support. * * Mar 2003: Added parisc support. * * Apr 2003: Added ppc support. * * Oct 2003: Added amd64, ia64 and make install support, short format flags printout. * * Dec 2003: Added mips and mips64 support. * * Feb 2004: Added PT_PAX_FLAGS support. * * Jun 2004: Fixed elf.h include, uses glibc's version now, added ppc64 support. paxtest-0.9.11/chpax-0.7/chpax.h0000640000175000017500000000500111335365325015463 0ustar spenderadmin/* * Include file for chpax.c * * The PaX project : http://pax.grsecurity.net/ * */ #include #include #include #include #include #include #include #include #include #define CHPAX_VERSION "0.7" #define HF_PAX_PAGEEXEC 1 /* 0: Paging based non-exec pages */ #define HF_PAX_EMUTRAMP 2 /* 0: Emulate trampolines */ #define HF_PAX_MPROTECT 4 /* 0: Restrict mprotect() */ #define HF_PAX_RANDMMAP 8 /* 0: Randomize mmap() base */ #define HF_PAX_RANDEXEC 16 /* 1: Randomize ET_EXEC base */ #define HF_PAX_SEGMEXEC 32 /* 0: Segmentation based non-exec pages */ #define EI_PAX 14 /* Index to read the PaX flags into ELF header e_ident[] array */ #ifndef PT_PAX_FLAGS #define PT_PAX_FLAGS 0x65041580 /* Indicates PaX flag markings */ #define PF_PAGEEXEC (1 << 4) /* Enable PAGEEXEC */ #define PF_NOPAGEEXEC (1 << 5) /* Disable PAGEEXEC */ #define PF_SEGMEXEC (1 << 6) /* Enable SEGMEXEC */ #define PF_NOSEGMEXEC (1 << 7) /* Disable SEGMEXEC */ #define PF_MPROTECT (1 << 8) /* Enable MPROTECT */ #define PF_NOMPROTECT (1 << 9) /* Disable MPROTECT */ #define PF_RANDEXEC (1 << 10) /* Enable RANDEXEC */ #define PF_NORANDEXEC (1 << 11) /* Disable RANDEXEC */ #define PF_EMUTRAMP (1 << 12) /* Enable EMUTRAMP */ #define PF_NOEMUTRAMP (1 << 13) /* Disable EMUTRAMP */ #define PF_RANDMMAP (1 << 14) /* Enable RANDMMAP */ #define PF_NORANDMMAP (1 << 15) /* Disable RANDMMAP */ #endif #define XCLOSE(fd) \ do \ { \ if (close(fd)) \ perror("close"); \ } \ while (0) #define FILE_IS_ELF64(h) (h.e_ident[EI_CLASS] == 2) #define FILE_IS_ELF32(h) (h.e_ident[EI_CLASS] == 1) /* Extern variables */ extern Elf32_Ehdr header_elf; extern Elf64_Ehdr header_elf64; extern struct exec header_aout; extern int header_size; extern void *header; extern int fd; extern unsigned long (*get_flags)(); extern void (*put_flags)(unsigned long); /* Function prototypes */ int read_header(char *name, int flags); int write_header(); unsigned long get_flags_elf(); void put_flags_elf(unsigned long flags); unsigned long get_flags_aout(); void put_flags_aout(unsigned long flags); unsigned long get_flags_elf64(); void put_flags_elf64(unsigned long flags); void usage(char *name); unsigned long scan_flags(unsigned long flags, char **argv, int *view); void print_flags(unsigned long flags); char *pax_short_flags(unsigned long flags); paxtest-0.9.11/chpax-0.7/Makefile0000640000175000017500000000107511337764040015655 0ustar spenderadmin## ## Makefile for chpax.c ## ## The PaX project : http://pax.grsecurity.net/ ## SRC = chpax.c io.c elf32.c elf64.c aout.c flags.c OBJ = $(SRC:.c=.o) RM = rm -f TARGET = chpax CC = gcc CFLAGS = -Wall -W -g3 STRIP = strip #STRIP = touch CP = cp DESTDIR = MANDIR = /usr/share/man/man1/ MKDIR = mkdir -p all : $(OBJ) $(CC) $(CFLAGS) $(OBJ) -o $(TARGET) install : all $(STRIP) $(TARGET) $(MKDIR) $(DESTDIR)/sbin/ $(DESTDIR)$(MANDIR) $(CP) $(TARGET) $(DESTDIR)/sbin/ $(CP) $(TARGET).1 $(DESTDIR)$(MANDIR) clean : $(RM) *.o *~ \#* *\# fclean : clean $(RM) $(TARGET) paxtest-0.9.11/chpax-0.7/elf32.c0000640000175000017500000000070307774375573015314 0ustar spenderadmin/* ** elf32.c for chpax ** ** The PaX project : http://pax.grsecurity.net/ ** */ #include "chpax.h" unsigned long get_flags_elf() { u_long flags; flags = ((u_long) header_elf.e_ident[EI_PAX + 1] << 8) + (u_long) header_elf.e_ident[EI_PAX]; return (flags); } void put_flags_elf(unsigned long flags) { header_elf.e_ident[EI_PAX] = (flags & 0xFF); header_elf.e_ident[EI_PAX + 1] = ((flags >> 8) & 0xFF); } paxtest-0.9.11/chpax-0.7/chpax.c0000640000175000017500000000373310066001172015453 0ustar spenderadmin/* * chpax version 0.7 * * This program manages various PaX related flags for ELF32, ELF64, * and a.out binaries. The flags only have effect when running the * patched Linux kernel. * * Written by Solar Designer and placed in the public domain. * * Adapted to PaX by the PaX Team * * Maintained by [jv@grsecurity.net] * */ #include "chpax.h" Elf32_Ehdr header_elf; Elf64_Ehdr header_elf64; struct exec header_aout; int header_size; void *header; int fd; unsigned long (*get_flags)(); void (*put_flags)(unsigned long); int main(int argc, char *argv[]) { unsigned long flags; unsigned long aflags; unsigned int index = 2; int mode; char *current; int error = 0; int view = 0; if (!argv) usage(NULL); if (argc < 3 || !argv[1] || argv[1][0] != '-') usage(argv[0]); flags = scan_flags(0, argv, &view); mode = view & !flags ? O_RDONLY : O_RDWR; for (current = argv[index]; current; current = argv[++index]) { error = read_header(current, mode); switch (error) { case 1: perror(current); continue ; case 2: fprintf(stderr, "%s: Unknown file type (passed) \n", current); XCLOSE(fd); continue ; case 3: fprintf(stderr, "%s: Wrong architecture (passed) \n", current); XCLOSE(fd); continue ; } aflags = get_flags(); flags = scan_flags(aflags, argv, &view); if (view) { printf("\n----[ chpax %s : Current flags for %s (%s) ]---- \n\n", CHPAX_VERSION, current, pax_short_flags(aflags)); print_flags(aflags); puts(""); } put_flags(flags); if (flags != aflags && write_header()) { perror(current); error = 4; } if (error) fprintf(stderr, "%s : Flags were not updated . \n", current); else if (view && aflags != flags) { printf("\n----[ chpax %s : Updated flags for %s (%s) ]---- \n\n", CHPAX_VERSION, current, pax_short_flags(flags)); print_flags(flags); puts(""); } XCLOSE(fd); } return (error); } paxtest-0.9.11/Makefile0000644000175000017500000000061211337763320014250 0ustar spenderadmin#!/usr/bin/make # # PaXtest master makefile # Copyright(c) 2003 by Peter Busser # This file has been released under the GNU Public Licence version 2 or later all: @cat targets linux: make -f Makefile.psm linux32: make -f Makefile.psm THEARCH=-m32 linux64: make -f Makefile.psm THEARCH=-m64 openbsd: gmake -f Makefile.OpenBSD clean: make -f Makefile.psm clean paxtest-0.9.11/rettofunc2.c0000644000175000017500000000142211252302225015034 0ustar spenderadmin/* rettofunc2.c - Tests whether return to function exploits using memcpy() work * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #include "body.h" const char testname[] = "Return to function (memcpy) "; fptr overflow[32] = { itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked }; void doit( void ) { char buf[4]; memcpy( buf, overflow, sizeof( overflow ) ); } paxtest-0.9.11/shlibdata.c0000644000175000017500000000303311340322651014677 0ustar spenderadmin/* shlibdata.c - Tests whether code in the .data segment of a shared library can * be executed * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #define _GNU_SOURCE #include #include #include #include #include "body.h" #include "shellcode.h" const char testname[] = "Executable shared library data "; void doit( void ) { fptr func; char *shdata, *shdata2; void *handle1, *handle2; handle1 = dlopen( "shlibtest.so", RTLD_LAZY ); if( handle1 == NULL ) { fprintf( stderr, "dlopen() returned NULL\n" ); exit( 1 ); } dlerror(); /* clear any errors */ shdata = dlsym( handle1, "shdata" ); if( dlerror() != NULL ) { fprintf( stderr, "symbol %s not found in %s\n", "shdata", "shlibtest.so" ); exit( 1 ); } handle2 = dlopen( "shlibtest2.so", RTLD_LAZY ); if( handle2 == NULL ) { fprintf( stderr, "dlopen() returned NULL\n" ); exit( 1 ); } dlerror(); /* clear any errors */ shdata2 = dlsym( handle2, "shdata2" ); if( dlerror() != NULL ) { fprintf( stderr, "symbol %s not found in %s\n", "shdata2", "shlibtest2.so" ); exit( 1 ); } copy_shellcode(shdata, SHELLCODE_RETURN); copy_shellcode(shdata2, SHELLCODE_RETURN); /* Convert the pointer to a function pointer */ func = shdata < shdata2 ? (fptr)shdata : (fptr)shdata2; /* Call the code in the buffer */ func(); /* It worked when the function returns */ itworked(); dlclose( handle1 ); dlclose( handle2 ); } paxtest-0.9.11/mprotshbss.c0000644000175000017500000000354311460412313015154 0ustar spenderadmin/* mprotshbss.c - Tests whether code in the .bss segment of a shared library can * be executed after trying to use mprotect() to make it * executable. * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #define _GNU_SOURCE #include #include #include #include #include #include "body.h" #include "shellcode.h" const char testname[] = "Executable shared library bss (mprotect) "; void doit( void ) { char *shbss; char *shbss2; fptr func; void *handle1, *handle2; handle1 = dlopen( "shlibtest.so", RTLD_LAZY ); if( handle1 == NULL ) { fprintf( stderr, "dlopen() returned NULL\n" ); exit( 1 ); } dlerror(); /* clear any errors */ shbss = dlsym( handle1, "shbss" ); if( dlerror() != NULL ) { fprintf( stderr, "symbol %s not found in %s\n", "shbss", "shlibtest.so" ); exit( 1 ); } handle2 = dlopen( "shlibtest2.so", RTLD_LAZY ); if( handle2 == NULL ) { fprintf( stderr, "dlopen() returned NULL\n" ); exit( 1 ); } dlerror(); /* clear any errors */ shbss2 = dlsym( handle2, "shbss2" ); if( dlerror() != NULL ) { fprintf( stderr, "symbol %s not found in %s\n", "shbss2", "shlibtest2.so" ); exit( 1 ); } copy_shellcode(shbss, SHELLCODE_RETURN); copy_shellcode(shbss2, SHELLCODE_RETURN); /* Convert the pointer to a function pointer */ func = shbss < shbss2 ? (fptr)shbss : (fptr)shbss2; /* Try to make the memory region executable by using mprotect() */ /* Due to an OpenBSD bug PROT_READ is required */ do_mprotect(func, MAX_SHELLCODE_LEN, PROT_READ|PROT_EXEC ); /* Call the code in the buffer */ func(); do_mprotect(func, MAX_SHELLCODE_LEN, PROT_READ|PROT_WRITE ); /* It worked when the function returns */ itworked(); dlclose( handle1 ); dlclose( handle2 ); } paxtest-0.9.11/getheap.c0000644000175000017500000000070511252302522014361 0ustar spenderadmin/* getheap.c - Get the address of the first element allocated on the heap and * print it. * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include int main( int argc, char *argv[] ) { char *p; p = malloc( 100 ); if( p == NULL ) { perror( "getheap" ); exit( 1 ); } printf( "%p\n", p ); exit( 0 ); } paxtest-0.9.11/randamap.c0000644000175000017500000000056211252302225014530 0ustar spenderadmin/* randamap.c - Tests the randomisation of anonymous mappings. * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #ifndef RUNDIR #error RUNDIR not defined #endif const char testname[] = "Anonymous mapping randomisation test "; const char testprog[] = RUNDIR"/getamap"; paxtest-0.9.11/body.h0000644000175000017500000000020510022064622013701 0ustar spenderadminvoid itworked( void ); void itfailed( void ); int do_mprotect( const void *addr, size_t len, int prot ); typedef void (*fptr)(void); paxtest-0.9.11/mprotanon.c0000644000175000017500000000361011340311573014763 0ustar spenderadmin/* mprotanon.c - Tests whether code can be executed in anonymous mappings * after trying to use mprotect() to make it executable. * * Copyright (c)2003,2004 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #include #include #include #include "body.h" #include "shellcode.h" #ifndef MAP_ANONYMOUS #define MAP_ANONYMOUS MAP_ANON #endif const char testname[] = "Executable anonymous mapping (mprotect) "; void doit( void ) { char *buf; fptr func; buf = mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); if( buf == MAP_FAILED ) { fprintf( stderr, "mmap() returned NULL\n" ); exit( 1 ); } copy_shellcode(buf, SHELLCODE_RETURN); /* Convert the pointer to a function pointer */ func = (fptr)buf; /* Try to make the anonymous mapping executable first by using * mprotect. * * Some people like to disable this call to make the results look * better for their system. * * The whole purpose of this call is to figure out how the system * handles mprotect() calls. If it allows the application to use * mprotect() to override kernel settings, then that is something * the user of this test suite may like to know. * * And yes, I know that this is how UNIX is supposed to work and that * it is a design decision to allow this override. All the more reason * to be honest and open about it and to tell the user why (s)he has * to trade in a bit of security for compatibility. * * But then, it is of course easier to simply disable this mprotect() * call than to fix your kernel and userland. */ /* Due to a FreeBSD bug PROT_READ is required */ do_mprotect( buf, 4096, PROT_READ|PROT_EXEC ); /* Call the code in the buffer */ func(); /* It worked when the function returns */ itworked(); } paxtest-0.9.11/execheap.c0000644000175000017500000000136011340321164014525 0ustar spenderadmin/* execheap.c - Tests whether code in the heap can be executed * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #include #include "body.h" #include "shellcode.h" const char testname[] = "Executable heap "; void doit( void ) { char *buf; fptr func; buf = malloc( MAX_SHELLCODE_LEN ); if( buf == NULL ) { fprintf( stderr, "Out of memory\n" ); exit( 1 ); } copy_shellcode(buf, SHELLCODE_RETURN); /* Convert the pointer to a function pointer */ func = (fptr)buf; /* Call the code in the buffer */ func(); /* It worked when the function returns */ itworked(); } paxtest-0.9.11/randbody.c0000644000175000017500000000177611252302365014564 0ustar spenderadmin/* randbody.c - This part is shared by the randomisation tests * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #define COUNT (25) extern const char testname[]; extern const char testprog[]; int main( int argc, char *argv[] ) { FILE *fp; int i; unsigned long tmp; unsigned long and; unsigned long or; int bits; int ret; printf( "%s: ", testname ); and = ~0L; or = 0L; for( i = 0; i < COUNT; i++ ) { fp = popen( testprog, "r" ); if( fp == NULL ) { perror( testprog ); exit( 1 ); } ret = fscanf( fp, "%lx", &tmp ); if (ret != 1) { perror ( testprog ); exit( 1 ); } and &= tmp; or |= tmp; pclose( fp ); } if( and == or ) { printf( "No randomisation\n" ); } else { tmp = and ^ ~or; tmp = or & ~tmp; bits = 0; while( tmp != 0 ) { bits += (tmp%2); tmp >>= 1; } printf( "%d bits (guessed)\n", bits ); } exit( 0 ); } paxtest-0.9.11/execstack.c0000644000175000017500000000120511460412564014723 0ustar spenderadmin/* execstack.c - Tests whether code on the stack can be executed * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #include #include "body.h" #include "shellcode.h" const char testname[] = "Executable stack "; void doit( void ) { char buf[8192]; fptr func; copy_shellcode(buf, SHELLCODE_RETURN); /* Convert the pointer to a function pointer */ func = (fptr)buf; /* Call the code in the buffer */ func(); /* It worked when the function returns */ itworked(); } paxtest-0.9.11/Makefile.psm0000644000175000017500000001520512100627117015042 0ustar spenderadmin#!/usr/bin/make # tested with make-3.79.1/gcc-2.96 (shared) and make-3.80/gcc-3.3.2/3 (pie) # make-3.79.1 does not support $$@ as target requirement (works for make-3.80) # preliminaries: # Gentoo modifies the specs adding pie/nopie to enable/disable ET_DYN binaries CC := gcc LD := ld CC_PIC := -fPIC GCC_SPCS := $(shell $(CC) -print-file-name=${GCC_SPECS:-specs}) check_gcc = $(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \ then echo "$(1)"; else echo "$(2)"; fi) check_as = $(shell if $(CC) -Wa,$(1) -Wa,-Z -c -o /dev/null -xassembler /dev/null > /dev/null 2>&1; \ then echo "-Wa,$(1)"; fi) # stack protector has to be disabled for some tests CC_SSP := $(call check_gcc,-fno-stack-protector,) CC_SSP += $(call check_gcc,-fno-stack-protector-all,) ASFLAGS := $(call check_as,--noexecstack) CC_PIE := $(call check_gcc,-fPIE,-fPIC) CC_TRAMPOLINES := $(call check_gcc,-ftrampolines,) CC_MSECURE_PLT := $(call check_gcc,-msecure-plt,) LD_PIE = $(shell $(LD) --help | grep -q pie && echo "-pie") ifneq ($(LD_PIE),) # Gentoo (hardened specs enabled) CC_ETEXEC = $(shell grep -q "\!nopie" $(GCC_SPCS) && echo "-nopie") LD_ETEXEC = $(CC_ETEXEC) endif ifeq ($(LD_PIE),) LD_PIE = -shared endif # check for installed binaries CHPAXBIN := $(shell if which chpax >/dev/null 2>&1 ; then echo chpax; fi) PAXCTLBIN := $(shell if which paxctl >/dev/null 2>&1 ; then echo paxctl; fi) # should somehow use this to see if we really need paxctl # list=`paxctl -qQv /sbin/paxctl 2>/dev/null`; if echo $list | grep -q "PaX flags" ; then echo paxctl; fi # instead we use both markings to have paxtest running correctly on all platforms ifneq ($(PAXCTLBIN),) DUMMY := $(shell echo '${PAXCTLBIN} $$*' > paxbin) endif # for some reason the .c files need it, else GNU_STACK=RWE OPT_FLAGS := -O2 $(ASFLAGS) PTHREAD := -lpthread # define stripping of binaries/libs here, or set these on make's commandline, # else you'll loose the chpax flags! LDFLAGS := SHLDFLAGS := ifndef RUNDIR RUNDIR := . endif # The Hardened GCC compiler has stack protector on by default, this # could interfere with the results of this test. CFLAGS := $(OPT_FLAGS) -D_FORTIFY_SOURCE=0 -DRUNDIR=\"${RUNDIR}\" $(CC_SSP) $(CC_TRAMPOLINES) ifneq ($(THEARCH),) CFLAGS += $(THEARCH) LDFLAGS += $(THEARCH) SHLDFLAGS += $(THEARCH) endif EXEC_TESTS = anonmap execbss execdata execheap execstack MPROT_TESTS = mprotanon mprotbss mprotdata mprotheap mprotstack SHLIB_TESTS = shlibbss shlibdata MPROTSH_TESTS = mprotshbss mprotshdata writetext RAND_TESTS = randamap randheap1 randheap2 randmain1 randmain2 randshlib randstack1 randstack2 randarg1 randarg2 randexhaust1 randexhaust2 RET_TESTS = rettofunc1 rettofunc2 RETX_TESTS = rettofunc1x rettofunc2x TESTS = $(EXEC_TESTS) $(SHLIB_TESTS) $(MPROT_TESTS) $(MPROTSH_TESTS) $(RAND_TESTS) $(RET_TESTS) $(RETX_TESTS) UTILS= getamap getheap1 getheap2 getmain1 getmain2 getshlib getstack1 getstack2 getarg1 getarg2 getexhaust1 getexhaust2 SHLIBS= shlibtest.so shlibtest2.so ifeq ($(CHPAXBIN),) CHPAXVER := 0.7 CHPAX := chpax-$(CHPAXVER) CHPAXSRC := $(CHPAX)/aout.c $(CHPAX)/chpax.c $(CHPAX)/elf32.c $(CHPAX)/elf64.c $(CHPAX)/flags.c $(CHPAX)/io.c CHPAXBIN := ./chpax all: chpax $(SHLIBS) $(TESTS) $(UTILS) paxtest else all: $(SHLIBS) $(TESTS) $(UTILS) paxtest endif # we need the failure handling, for kernels not supporting EI_PAX DUMMY := $(shell echo '${CHPAXBIN} $$* >/dev/null 2>/dev/null ||:' >> paxbin; chmod +x paxbin) PAXBIN := ./paxbin DL := -ldl clean: -rm -f *.o *.s *~ core -rm -f $(TESTS) $(UTILS) $(SHLIBS) -rm -f paxtest paxtest.log a.out dumpspecs paxbin -rm -f chpax-0.7/*.o -rm -f chpax ifdef DESTDIR ifdef BINDIR ifdef RUNDIR install: all mkdir -p $(DESTDIR)/$(RUNDIR) cp $(SHLIBS) $(TESTS) $(UTILS) $(DESTDIR)/$(RUNDIR) mkdir -p $(DESTDIR)/$(BINDIR) cp paxtest $(DESTDIR)/$(BINDIR) chmod 755 $(DESTDIR)/$(BINDIR)/paxtest endif endif endif chpax: $(CHPAXSRC:.c=.o) $(CC) $(LDFLAGS) -o $@ $^ paxtest: $(TESTS) genpaxtest sh genpaxtest $(TESTS) .S.o: $(CC) $(CFLAGS) $(CC_PIE) $(ASFLAGS) -o $@ -c $< .c.o: $(CC) $(CFLAGS) -o $@ -c $< $(EXEC_TESTS) $(MPROT_TESTS): body.o $(CC) $(CFLAGS) -o $@.o -c $@.c $(CC) $(LDFLAGS) -o $@ $< $@.o $(PTHREAD) $(RAND_TESTS): randbody.o $(CC) $(CFLAGS) -o $@.o -c $@.c $(CC) $(LDFLAGS) -o $@ $< $@.o getamap: getamap.o $(CC) $(LDFLAGS) -o $@ $@.o # get heap1/main1 are built w/o PIC get%1.o: get%.c $(CC) $(CFLAGS) $(CC_ETEXEC) -o $@ -c $< # get heap2/main2 are built w/ PIC get%2.o: get%.c $(CC) $(CFLAGS) $(CC_PIE) -o $@ -c $< # Adamantix uses the PIC version (getheap2.o), not necessary for ET_EXEC # build as ET_EXEC (not in Adamantix's Makefile) getheap1: getheap1.o $(CC) $(LDFLAGS) $(LD_ETEXEC) -o $@ $< getmain1: getmain1.o $(CC) $(LDFLAGS) $(LD_ETEXEC) -o $@ $< -$(PAXBIN) -C $@ $(PAXBIN) -SPRXM $@ getheap2 getmain2: getheap2.o getmain2.o $(CC) $(LDFLAGS) $(LD_PIE) -o $@ $@.o || (echo -e "#!/bin/sh\necho $@ pie not implemented" > $@; chmod +x $@) getshlib: getshlib.o $(CC) $(LDFLAGS) -o $@ $< $(DL) # ET_EXEC and usage of "m" is not confirmed (as in Gentoo patch) # Adamantix does not use it # Pax Team does not want "m" for getstack1/2 getstack1: getstack.o $(CC) $(LDFLAGS) -o $@ $< -$(PAXBIN) -C $@ $(PAXBIN) -SRpm $@ getstack2: getstack.o $(CC) $(LDFLAGS) -o $@ $< # disable segmexec, kernel else overrides pageexec -$(PAXBIN) -C $@ $(PAXBIN) -PRsm $@ getarg1: getarg.o $(CC) $(LDFLAGS) -o $@ $< -$(PAXBIN) -C $@ $(PAXBIN) -SRpm $@ getexhaust1: getexhaust1.o $(CC) $(LDFLAGS) -o $@ $< -$(PAXBIN) -C $@ $(PAXBIN) -SRpm $@ getexhaust2: getexhaust2.o $(CC) $(LDFLAGS) -o $@ $< -$(PAXBIN) -C $@ $(PAXBIN) -SRpm $@ getarg2: getarg.o $(CC) $(LDFLAGS) -o $@ $< # disable segmexec, kernel else overrides pageexec -$(PAXBIN) -C $@ $(PAXBIN) -PRsm $@ $(MPROTSH_TESTS): body.o shlibtest.so $(CC) $(CFLAGS) -o $@.o -c $@.c $(CC) $(LDFLAGS) -o $@ $@.o $^ $(DL) $(PTHREAD) # used for RANDEXEC'd binaries retbody.o: body.c $(CC) $(CFLAGS) $(CC_ETEXEC) -o $@ -c $< # build as ET_EXEC (recommended by PaX Team, not really a requirement) $(RET_TESTS): retbody.o $(CC) $(CFLAGS) $(CC_ETEXEC) -o $@.o -c $@.c $(CC) $(LDFLAGS) $(LD_ETEXEC) -o $@ $< $@.o $(PTHREAD) # build as ET_EXEC (not in Adamantix's Makefile) $(RETX_TESTS): retbody.o $(CC) $(CFLAGS) $(CC_ETEXEC) -o $@.o -c $@.c $(CC) $(LDFLAGS) $(LD_ETEXEC) -o $@ $< $@.o $(PTHREAD) -$(PAXBIN) -C $@ $(PAXBIN) -SPXM $@ # should also shlibbss.o and shlibdata.o be built w/ PIC? # if yes, remove tes from target and dependency shlibtes%.o: shlibtes%.c $(CC) $(CFLAGS) $(CC_PIC) -o $@ -c $< shlib%.so: shlib%.o $(CC) $(SHLDFLAGS) -shared -o $@ $< $(SHLIB_TESTS): body.o $(SHLIBS) shlibbss.o shlibdata.o $(CC) $(LDFLAGS) -o $@ body.o $@.o $(SHLIBS) $(DL) $(PTHREAD) paxtest-0.9.11/rettofunc2x.c0000644000175000017500000000142211340314371015227 0ustar spenderadmin/* rettofunc2.c - Tests whether return to function exploits using memcpy() work * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #include "body.h" const char testname[] = "Return to function (memcpy, PIE) "; fptr overflow[32] = { itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked, itworked }; void doit( void ) { char buf[4]; memcpy( buf, overflow, sizeof( overflow ) ); } paxtest-0.9.11/shellcode.h0000644000175000017500000000242011340311220014700 0ustar spenderadmin#include #include #define MAX_SHELLCODE_LEN 12 #if defined(__powerpc__) #define SHELLCODE_RETURN_ARRAY { '\x4e', '\x80', '\x00', '\x20' } #define SHELLCODE_RETURN "\x4e\x80\x00\x20" #define SIZE_OF_SHELLCODE_RETURN 4 #elif defined(__sparc__) && !defined(__arch64__) #define SHELLCODE_RETURN_ARRAY { '\x81', '\xc7', '\xe0', '\x08', '\x81', '\xe8' ,'\x00', '\x00' } #define SHELLCODE_RETURN "\x81\xc7\xe0\x08\x81\xe8\x00\x00" #define SIZE_OF_SHELLCODE_RETURN 8 #elif defined(__sparc__) && defined(__arch64__) #define SHELLCODE_RETURN_ARRAY { '\x9d', '\xe3', '\xbf', '\x40', '\x81', '\xcf', '\xe0', '\x08', '\x01', '\x00', '\x00', '\x00' } #define SHELLCODE_RETURN "\x9d\xe3\xbf\x40\x81\xcf\xe0\x08\x01\x00\x00\x00" #define SIZE_OF_SHELLCODE_RETURN 12 #else #define SHELLCODE_RETURN_ARRAY { '\xc3' } #define SHELLCODE_RETURN "\xc3" #define SIZE_OF_SHELLCODE_RETURN 1 #endif #if defined(__powerpc64__) static inline void copy_shellcode(char *dest, char *src) { /* 12 bytes total */ unsigned long dstaddr = (unsigned long)dest + sizeof(dstaddr); memcpy(dest, &dstaddr, sizeof(dstaddr)); memcpy(dest + sizeof(dstaddr), src, SIZE_OF_SHELLCODE_RETURN); } #else static inline void copy_shellcode(char *dest, char *src) { memcpy(dest, src, SIZE_OF_SHELLCODE_RETURN); } #endif paxtest-0.9.11/anonmap.c0000644000175000017500000000163211340312074014376 0ustar spenderadmin/* anonmap.c - Tests whether code can be executed in anonymous mappings * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #include #include #include #include "body.h" #include "shellcode.h" const char testname[] = "Executable anonymous mapping "; #ifndef MAP_ANONYMOUS #define MAP_ANONYMOUS MAP_ANON #endif void doit( void ) { char *buf; fptr func; buf = mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); if( buf == MAP_FAILED ) { fprintf( stderr, "mmap() returned NULL\n" ); exit( 1 ); } copy_shellcode(buf, SHELLCODE_RETURN); /* Convert the pointer to a function pointer */ func = (fptr)buf; /* Call the code in the buffer */ func(); /* It worked when the function returns */ itworked(); } paxtest-0.9.11/randexhaust0000755000000000000000000001323012100276212014234 0ustar rootrootELF4 4 (444444,,,,, (@@@HHHDDPtdQtd/lib/ld-linux.so.2GNUGNU?Ơٿ<[uvg    K@G:.5 )W^$__gmon_start__libc.so.6_IO_stdin_usedexitperrorputspopenprintf__isoc99_fscanfpclose__libc_start_mainGLIBC_2.1GLIBC_2.7GLIBC_2.0ii pii zii  $(,048<@ US[8tn)X[5%% h%$h%(h%,h%0h %4h(%8h0%<h8p%@h@`UW1VS0D$$(ID$D$-$`Lt}D$,D$D$/$u`D$,!D$$ gu9|$t[D$11!D$,tfuD$,T$$D$ $`$$3ΐ1^PTRhPh`QVhUS=Lu?P849sP4P9rL[]Ít&'U<tt $<ÐU]Ít&'UWVSOéW)t$1ED$E D$E$9rރ[^_]Ë$ÐUS,t,fЋu[]ÐUS[Y[%s: r%lxNo randomisation%d bits (guessed) ./getexhaustRandomization under memory pressure ;T4XzR|  F J tx?;*2$" @AB CFV Ѓ ó Ho@oo*@&6FVfvGCC: (Debian 4.6.3-1) 4.6.3GCC: (Debian 4.4.7-3) 4.4.7.symtab.strtab.shstrtab.interp.note.ABI-tag.note.gnu.build-id.gnu.hash.dynsym.dynstr.gnu.version.gnu.version_r.rel.dyn.rel.plt.init.text.fini.rodata.eh_frame_hdr.eh_frame.ctors.dtors.jcr.dynamic.got.got.plt.data.bss.comment44#HH 1hh$H@Dó N V^o**ko@@@z  H Ѓ0L   ȇd,,44<<@@  0DD LL 0L 8 X/ 4Hh́*@   Ѓ   ȇ,4<@DL ,4(<5KLZPh t0(<,@, P4D ?*HZuL|8D H $9`ZITNU \Lhm` v Ѓ crtstuff.c__CTOR_LIST____DTOR_LIST____JCR_LIST____do_global_dtors_auxcompleted.5514dtor_idx.5516frame_dummy__CTOR_END____FRAME_END____JCR_END____do_global_ctors_auxrandbody.crandexhaust.c__init_array_end_DYNAMIC__init_array_start_GLOBAL_OFFSET_TABLE___libc_csu_fini__i686.get_pc_thunk.bxdata_starttestnameprintf@@GLIBC_2.0__isoc99_fscanf@@GLIBC_2.7_edata_finipopen@@GLIBC_2.1perror@@GLIBC_2.0__DTOR_END____data_startputs@@GLIBC_2.0__gmon_start__exit@@GLIBC_2.0__dso_handlepclose@@GLIBC_2.1_IO_stdin_used__libc_start_main@@GLIBC_2.0__libc_csu_init_end_start_fp_hw__bss_startmaintestprog_Jv_RegisterClasses_initpaxtest-0.9.11/execbss.c0000644000175000017500000000123011340307672014403 0ustar spenderadmin/* execbss.c - Tests whether code in the .bss segment can be executed * * Copyright (c)2003 by Peter Busser * This file has been released under the GNU Public Licence version 2 or later */ #include #include #include #include "body.h" #include "shellcode.h" const char testname[] = "Executable bss "; char buf[MAX_SHELLCODE_LEN]; void doit( void ) { fptr func; copy_shellcode(buf, SHELLCODE_RETURN); /* Convert the pointer to a function pointer */ func = (fptr)&buf; /* Call the code in the buffer */ func(); /* It worked when the function returns */ itworked(); } paxtest-0.9.11/targets0000644000175000017500000000022411337762345014211 0ustar spenderadminChoose one of the following make targets: linux Linux (gcc default) linux32 32bit Linux linux64 64bit Linux openbsd OpenBSD clean Clean up paxtest-0.9.11/Makefile.OpenBSD0000644000175000017500000000563511726562556015525 0ustar spenderadmin#!/usr/bin/gmake CC=gcc CFLAGS= LDFLAGS= ifndef RUNDIR RUNDIR=. endif CFLAGS+=-DRUNDIR=\"${RUNDIR}\" -fno-stack-protector -ftrampolines LDFLAGS+=-lpthread TESTS= anonmap \ execbss \ execdata \ execheap \ execstack \ mprotanon \ mprotbss \ mprotdata \ mprotheap \ mprotshbss \ mprotshdata \ mprotstack \ randamap \ randheap1 \ randmain1 \ randshlib \ randstack1 \ randstack2 \ randarg1 \ randarg2 \ rettofunc1 \ rettofunc1x \ rettofunc2 \ rettofunc2x \ shlibbss \ shlibdata \ writetext UTILS= getamap \ getheap1 \ getheap2 \ getmain1 \ getmain2 \ getshlib \ getstack1 \ getstack2 \ getarg1 \ getarg2 SHLIBS= shlibtest.so \ shlibtest2.so all: $(SHLIBS) $(TESTS) $(UTILS) paxtest clean: -rm -f *.o *.s *~ core -rm -f $(SHLIBS) $(TESTS) $(UTILS) -rm -f paxtest paxtest.log a.out ifdef DESTDIR ifdef BINDIR ifdef RUNDIR install: all mkdir -p $(DESTDIR)/$(RUNDIR) cp $(SHLIBS) $(TESTS) $(UTILS) $(DESTDIR)/$(RUNDIR) mkdir -p $(DESTDIR)/$(BINDIR) cp paxtest $(DESTDIR)/$(BINDIR) chmod 755 $(DESTDIR)/$(BINDIR)/paxtest endif endif endif paxtest: $(TESTS) genpaxtest sh genpaxtest $(TESTS) anonmap: body.o anonmap.o execbss: body.o execbss.o execdata: body.o execdata.o execheap: body.o execheap.o execstack: body.o execstack.o getheap1: getheap.o $(CC) $(LDFLAGS) -o $@ $+ getheap2: getheap.o $(CC) -shared -o $@ $+ getheap.o: getheap.c $(CC) $(CFLAGS) -fPIC -o $@ -c $< getamap.o: getamap.c getmain1: getmain.o $(CC) $(LDFLAGS) -o $@ $+ getmain2: getmain2.o $(CC) -shared -o $@ $+ getmain2.o: getmain.c $(CC) $(CFLAGS) -fPIC -o $@ -c $< getshlib: getshlib.o getstack1: getstack.o $(CC) $(LDFLAGS) -o $@ $+ getstack2: getstack1 rm -f $@ cp getstack1 $@ chmod +x $@ getarg1: getarg.o $(CC) $(LDFLAGS) -o $@ $+ getarg2: getarg1 rm -f $@ cp getarg1 $@ chmod +x $@ mprotanon: body.o mprotanon.o mprotbss: body.o mprotbss.o mprotheap: body.o mprotheap.o mprotdata: body.o mprotdata.o mprotshbss: body.o mprotshbss.o shlibtest.so mprotshdata: body.o mprotshdata.o shlibtest.so mprotstack: body.o mprotstack.o randamap: randbody.o randamap.o randheap1: randbody.o randheap1.o randheap2: randbody.o randheap2.o randmain1: randbody.o randmain1.o randmain2: randbody.o randmain2.o randshlib: randbody.o randshlib.o randstack1: randbody.o randstack1.o randstack2: randbody.o randstack2.o rettofunc1: body.o rettofunc1.o rettofunc1x: body.o rettofunc1x.o $(CC) $(LDFLAGS) -o $@ $+ rettofunc2: body.o rettofunc2.o rettofunc2x: body.o rettofunc2x.o $(CC) $(LDFLAGS) -o $@ $+ shlibtest.o: shlibtest.c $(CC) $(CFLAGS) -fPIC -c $< -o $@ shlibtest2.o: shlibtest2.c $(CC) $(CFLAGS) -fPIC -c $< -o $@ shlibtest.so: shlibtest.o $(CC) $(SHLDFLAGS) -shared -o $@ $+ shlibtest2.so: shlibtest2.o $(CC) $(SHLDFLAGS) -shared -o $@ $+ shlibbss: body.o shlibbss.o shlibtest.so shlibtest2.so shlibdata: body.o shlibdata.o shlibtest.so shlibtest2.so writetext: body.o writetext.o shlibtest.so