9f0bdbd997
Add new C and C++ tests: - t_asan_double_free - t_asan_global_buffer_overflow - t_asan_heap_overflow - t_asan_off_by_one - t_asan_uaf Each tests checks: - regular build - 32-bit - PIC - PIE - profile These tests require paxctl(8) to disable ASLR in order to work in a predictable way. This is especially true for all !regular builds with additional compiler flags. There are no static variations of these tests as this mode is not supported in upstream ASan. Enable these tests on amd64 and i386. Patch submitted by <Siddharth Muralee> Additional polishing by myself.
206 lines
6.1 KiB
Bash
206 lines
6.1 KiB
Bash
# $NetBSD: t_asan_uaf.sh,v 1.1 2018/04/04 23:51:35 kamil Exp $
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#
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# Copyright (c) 2018 The NetBSD Foundation, Inc.
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# All rights reserved.
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#
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# This code is derived from software contributed to The NetBSD Foundation
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# by Siddharth Muralee.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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SUPPORT='n'
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test_target() {
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if uname -m | grep -q "amd64"; then
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SUPPORT='y'
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fi
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if uname -m | grep -q "i386"; then
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SUPPORT='y'
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fi
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}
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atf_test_case uaf
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uaf_head() {
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atf_set "descr" "compile and run \"Use After Free example\""
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atf_set "require.progs" "cc paxctl"
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}
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atf_test_case uaf_profile
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uaf_profile_head() {
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atf_set "descr" "compile and run \"Use After Free example\" with profiling option"
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atf_set "require.progs" "cc paxctl"
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}
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atf_test_case uaf_pic
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uaf_pic_head() {
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atf_set "descr" "compile and run PIC \"Use After Free example\""
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atf_set "require.progs" "cc paxctl"
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}
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atf_test_case uaf_pie
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uaf_pie_head() {
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atf_set "descr" "compile and run position independent (PIE) \"Use After Free example\""
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atf_set "require.progs" "cc paxctl"
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}
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atf_test_case uaf32
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uaf32_head() {
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atf_set "descr" "compile and run \"Use After Free example\" for/in netbsd32 emulation"
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atf_set "require.progs" "cc paxctl file diff cat"
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}
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atf_test_case target_not_supported
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target_not_supported_head()
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{
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atf_set "descr" "Test forced skip"
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}
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uaf_body() {
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cat > test.c << EOF
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#include <stdlib.h>
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#include <stdio.h>
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int foo() {int *x = (int *)malloc(10 * sizeof(int)); free(x); return x[0];}
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void main() {foo(); printf("CHECK\n"); exit(0);}
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EOF
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cc -fsanitize=address -o test test.c
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paxctl +a test
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atf_check -s not-exit:0 -o not-match:"CHECK\n" -e match:"heap-use-after-free" ./test
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}
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uaf_profile_body() {
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cat > test.c << EOF
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#include <stdlib.h>
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#include <stdio.h>
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int foo() {int *x = (int *)malloc(10 * sizeof(int)); free(x); return x[0];}
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void main() {foo(); printf("CHECK\n"); exit(0);}
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EOF
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cc -fsanitize=address -o test -pg test.c
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paxctl +a test
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atf_check -s not-exit:0 -o not-match:"CHECK\n" -e match:"heap-use-after-free" ./test
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}
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uaf_pic_body() {
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cat > test.c << EOF
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#include <stdlib.h>
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#include <stdio.h>
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int foo();
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void main() {foo(); printf("CHECK\n"); exit(0);}
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EOF
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cat > pic.c << EOF
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#include <stdlib.h>
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#include <stdio.h>
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int foo() {int *x = (int *)malloc(10 * sizeof(int)); free(x); return x[0];}
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EOF
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cc -fPIC -fsanitize=address -shared -o libtest.so pic.c
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cc -o test test.c -fsanitize=address -L. -ltest
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paxctl +a test
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export LD_LIBRARY_PATH=.
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atf_check -s not-exit:0 -o not-match:"CHECK\n" -e match:"heap-use-after-free" ./test
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}
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uaf_pie_body() {
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# check whether this arch supports -pice
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if ! cc -pie -dM -E - < /dev/null 2>/dev/null >/dev/null; then
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atf_set_skip "cc -pie not supported on this architecture"
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fi
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cat > test.c << EOF
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#include <stdlib.h>
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#include <stdio.h>
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int foo() {int *x = (int *)malloc(10 * sizeof(int)); free(x); return x[0];}
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void main() {foo(); printf("CHECK\n"); exit(0);}
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EOF
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cc -fsanitize=address -fpie -pie -o test test.c
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paxctl +a test
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atf_check -s not-exit:0 -o not-match:"CHECK\n" -e match:"heap-use-after-free" ./test
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}
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uaf32_body() {
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# check whether this arch is 64bit
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if ! cc -dM -E - < /dev/null | fgrep -q _LP64; then
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atf_skip "this is not a 64 bit architecture"
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fi
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if ! cc -m32 -dM -E - < /dev/null 2>/dev/null > ./def32; then
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atf_skip "cc -m32 not supported on this architecture"
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else
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if fgrep -q _LP64 ./def32; then
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atf_fail "cc -m32 does not generate netbsd32 binaries"
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fi
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fi
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cat > test.c << EOF
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#include <stdlib.h>
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#include <stdio.h>
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int foo() {int *x = (int *)malloc(10 * sizeof(int)); free(x); return x[0];}
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void main() {foo(); printf("CHECK\n"); exit(0);}
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EOF
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cc -fsanitize=address -o uaf32 -m32 test.c
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cc -fsanitize=address -o uaf64 test.c
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file -b ./uaf32 > ./ftype32
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file -b ./uaf64 > ./ftype64
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if diff ./ftype32 ./ftype64 >/dev/null; then
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atf_fail "generated binaries do not differ"
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fi
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echo "32bit binaries on this platform are:"
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cat ./ftype32
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echo "While native (64bit) binaries are:"
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cat ./ftype64
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paxctl +a uaf32
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atf_check -s not-exit:0 -o not-match:"CHECK\n" -e match:"heap-use-after-free" ./uaf32
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# and another test with profile 32bit binaries
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cat > test.c << EOF
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#include <stdlib.h>
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#include <stdio.h>
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int foo() {int *x = (int *)malloc(10 * sizeof(int)); free(x); return x[0];}
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void main() {foo(); printf("CHECK\n"); exit(0);}
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EOF
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cc -o test -m32 -fsanitize=address -pg test.c
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paxctl +a test
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atf_check -s not-exit:0 -o not-match:"CHECK\n" -e match:"heap-use-after-free" ./test
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}
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target_not_supported_body()
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{
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atf_skip "Target is not supported"
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}
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atf_init_test_cases()
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{
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test_target
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test $SUPPORT = 'n' && {
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atf_add_test_case target_not_supported
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return 0
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}
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atf_add_test_case uaf
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atf_add_test_case uaf_profile
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atf_add_test_case uaf_pic
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atf_add_test_case uaf_pie
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atf_add_test_case uaf32
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# static option not supported
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# -static and -fsanitize=address can't be used together for compilation
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# (gcc version 5.4.0 and clang 7.1) tested on April 2nd 2018.
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}
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