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154 lines
10 KiB
Python
Executable File
154 lines
10 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2015-2020 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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'''
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Test script for security-check.py
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'''
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import lief #type:ignore
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import os
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import subprocess
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from typing import List
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import unittest
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from utils import determine_wellknown_cmd
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def write_testcode(filename):
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with open(filename, 'w', encoding="utf8") as f:
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f.write('''
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#include <stdio.h>
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int main()
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{
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printf("the quick brown fox jumps over the lazy god\\n");
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return 0;
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}
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''')
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def clean_files(source, executable):
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os.remove(source)
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os.remove(executable)
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def call_security_check(cc, source, executable, options):
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# This should behave the same as AC_TRY_LINK, so arrange well-known flags
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# in the same order as autoconf would.
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#
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# See the definitions for ac_link in autoconf's lib/autoconf/c.m4 file for
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# reference.
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env_flags: List[str] = []
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for var in ['CFLAGS', 'CPPFLAGS', 'LDFLAGS']:
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env_flags += filter(None, os.environ.get(var, '').split(' '))
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subprocess.run([*cc,source,'-o',executable] + env_flags + options, check=True)
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p = subprocess.run(['./contrib/devtools/security-check.py',executable], stdout=subprocess.PIPE, universal_newlines=True)
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return (p.returncode, p.stdout.rstrip())
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def get_arch(cc, source, executable):
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subprocess.run([*cc, source, '-o', executable], check=True)
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binary = lief.parse(executable)
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arch = binary.abstract.header.architecture
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os.remove(executable)
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return arch
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class TestSecurityChecks(unittest.TestCase):
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def test_ELF(self):
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source = 'test1.c'
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executable = 'test1'
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cc = determine_wellknown_cmd('CC', 'gcc')
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write_testcode(source)
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arch = get_arch(cc, source, executable)
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if arch == lief.ARCHITECTURES.X86:
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-zexecstack','-Wl,-znorelro','-no-pie','-fno-PIE', '-Wl,-z,separate-code']),
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(1, executable+': failed PIE NX RELRO CONTROL_FLOW'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-znoexecstack','-Wl,-znorelro','-no-pie','-fno-PIE', '-Wl,-z,separate-code']),
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(1, executable+': failed PIE RELRO CONTROL_FLOW'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-znoexecstack','-Wl,-znorelro','-no-pie','-fno-PIE', '-Wl,-z,separate-code']),
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(1, executable+': failed PIE RELRO CONTROL_FLOW'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-znoexecstack','-Wl,-znorelro','-pie','-fPIE', '-Wl,-z,separate-code']),
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(1, executable+': failed RELRO CONTROL_FLOW'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-znoexecstack','-Wl,-zrelro','-Wl,-z,now','-pie','-fPIE', '-Wl,-z,noseparate-code']),
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(1, executable+': failed separate_code CONTROL_FLOW'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-znoexecstack','-Wl,-zrelro','-Wl,-z,now','-pie','-fPIE', '-Wl,-z,separate-code']),
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(1, executable+': failed CONTROL_FLOW'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-znoexecstack','-Wl,-zrelro','-Wl,-z,now','-pie','-fPIE', '-Wl,-z,separate-code', '-fcf-protection=full']),
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(0, ''))
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else:
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-zexecstack','-Wl,-znorelro','-no-pie','-fno-PIE', '-Wl,-z,separate-code']),
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(1, executable+': failed PIE NX RELRO'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-znoexecstack','-Wl,-znorelro','-no-pie','-fno-PIE', '-Wl,-z,separate-code']),
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(1, executable+': failed PIE RELRO'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-znoexecstack','-Wl,-znorelro','-no-pie','-fno-PIE', '-Wl,-z,separate-code']),
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(1, executable+': failed PIE RELRO'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-znoexecstack','-Wl,-znorelro','-pie','-fPIE', '-Wl,-z,separate-code']),
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(1, executable+': failed RELRO'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-znoexecstack','-Wl,-zrelro','-Wl,-z,now','-pie','-fPIE', '-Wl,-z,noseparate-code']),
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(1, executable+': failed separate_code'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-znoexecstack','-Wl,-zrelro','-Wl,-z,now','-pie','-fPIE', '-Wl,-z,separate-code']),
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(0, ''))
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clean_files(source, executable)
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def test_PE(self):
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source = 'test1.c'
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executable = 'test1.exe'
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cc = determine_wellknown_cmd('CC', 'x86_64-w64-mingw32-gcc')
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write_testcode(source)
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,--disable-nxcompat','-Wl,--disable-reloc-section','-Wl,--disable-dynamicbase','-Wl,--disable-high-entropy-va','-no-pie','-fno-PIE','-fno-stack-protector']),
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(1, executable+': failed PIE DYNAMIC_BASE HIGH_ENTROPY_VA NX RELOC_SECTION CONTROL_FLOW Canary'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,--nxcompat','-Wl,--disable-reloc-section','-Wl,--disable-dynamicbase','-Wl,--disable-high-entropy-va','-no-pie','-fno-PIE','-fstack-protector-all', '-lssp']),
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(1, executable+': failed PIE DYNAMIC_BASE HIGH_ENTROPY_VA RELOC_SECTION CONTROL_FLOW'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,--nxcompat','-Wl,--enable-reloc-section','-Wl,--disable-dynamicbase','-Wl,--disable-high-entropy-va','-no-pie','-fno-PIE','-fstack-protector-all', '-lssp']),
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(1, executable+': failed PIE DYNAMIC_BASE HIGH_ENTROPY_VA CONTROL_FLOW'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,--nxcompat','-Wl,--enable-reloc-section','-Wl,--disable-dynamicbase','-Wl,--disable-high-entropy-va','-pie','-fPIE','-fstack-protector-all', '-lssp']),
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(1, executable+': failed PIE DYNAMIC_BASE HIGH_ENTROPY_VA CONTROL_FLOW')) # -pie -fPIE does nothing unless --dynamicbase is also supplied
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,--nxcompat','-Wl,--enable-reloc-section','-Wl,--dynamicbase','-Wl,--disable-high-entropy-va','-pie','-fPIE','-fstack-protector-all', '-lssp']),
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(1, executable+': failed HIGH_ENTROPY_VA CONTROL_FLOW'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,--nxcompat','-Wl,--enable-reloc-section','-Wl,--dynamicbase','-Wl,--high-entropy-va','-pie','-fPIE','-fstack-protector-all', '-lssp']),
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(1, executable+': failed CONTROL_FLOW'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,--nxcompat','-Wl,--enable-reloc-section','-Wl,--dynamicbase','-Wl,--high-entropy-va','-pie','-fPIE', '-fcf-protection=full','-fstack-protector-all', '-lssp']),
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(0, ''))
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clean_files(source, executable)
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def test_MACHO(self):
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source = 'test1.c'
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executable = 'test1'
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cc = determine_wellknown_cmd('CC', 'clang')
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write_testcode(source)
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arch = get_arch(cc, source, executable)
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if arch == lief.ARCHITECTURES.X86:
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-no_pie','-Wl,-flat_namespace','-Wl,-allow_stack_execute','-fno-stack-protector', '-Wl,-no_fixup_chains']),
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(1, executable+': failed NOUNDEFS Canary FIXUP_CHAINS PIE NX CONTROL_FLOW'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-no_pie','-Wl,-flat_namespace','-Wl,-allow_stack_execute','-fno-stack-protector', '-Wl,-fixup_chains']),
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(1, executable+': failed NOUNDEFS Canary PIE NX CONTROL_FLOW'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-no_pie','-Wl,-flat_namespace','-Wl,-allow_stack_execute','-fstack-protector-all', '-Wl,-fixup_chains']),
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(1, executable+': failed NOUNDEFS PIE NX CONTROL_FLOW'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-no_pie','-Wl,-flat_namespace','-fstack-protector-all', '-Wl,-fixup_chains']),
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(1, executable+': failed NOUNDEFS PIE CONTROL_FLOW'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-no_pie','-fstack-protector-all', '-Wl,-fixup_chains']),
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(1, executable+': failed PIE CONTROL_FLOW'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-no_pie','-fstack-protector-all', '-Wl,-fixup_chains']),
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(1, executable+': failed PIE CONTROL_FLOW'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-no_pie','-fstack-protector-all', '-fcf-protection=full', '-Wl,-fixup_chains']),
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(1, executable+': failed PIE'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-pie','-fstack-protector-all', '-fcf-protection=full', '-Wl,-fixup_chains']),
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(0, ''))
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else:
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# arm64 darwin doesn't support non-PIE binaries, control flow or executable stacks
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-flat_namespace','-fno-stack-protector', '-Wl,-no_fixup_chains']),
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(1, executable+': failed NOUNDEFS Canary FIXUP_CHAINS'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-flat_namespace','-fno-stack-protector', '-Wl,-fixup_chains']),
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(1, executable+': failed NOUNDEFS Canary'))
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self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-flat_namespace','-fstack-protector-all', '-Wl,-fixup_chains']),
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(1, executable+': failed NOUNDEFS'))
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self.assertEqual(call_security_check(cc, source, executable, ['-fstack-protector-all', '-Wl,-fixup_chains']),
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(0, ''))
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clean_files(source, executable)
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if __name__ == '__main__':
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unittest.main()
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