/
test-security-check.py
executable file
·494 lines (472 loc) · 15.2 KB
/
test-security-check.py
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#!/usr/bin/env python3
# Copyright (c) 2015-2017 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""
Test script for security-check.py
"""
import os
import subprocess
import unittest
from typing import List
import lief # type:ignore
from utils import determine_wellknown_cmd
def write_testcode(filename):
with open(filename, "w", encoding="utf8") as f:
f.write(
"""
#include <stdio.h>
int main()
{
printf("the quick brown fox jumps over the lazy god\\n");
return 0;
}
"""
)
def clean_files(source, executable):
os.remove(source)
os.remove(executable)
def call_security_check(cc, source, executable, options):
# This should behave the same as AC_TRY_LINK, so arrange well-known flags
# in the same order as autoconf would.
#
# See the definitions for ac_link in autoconf's lib/autoconf/c.m4 file for
# reference.
env_flags: List[str] = []
for var in ["CFLAGS", "CPPFLAGS", "LDFLAGS"]:
env_flags += filter(None, os.environ.get(var, "").split(" "))
subprocess.run([*cc, source, "-o", executable] + env_flags + options, check=True)
p = subprocess.run(
["./contrib/devtools/security-check.py", executable],
stdout=subprocess.PIPE,
universal_newlines=True,
)
return p.returncode, p.stdout.rstrip()
def get_arch(cc, source, executable):
subprocess.run([*cc, source, "-o", executable], check=True)
binary = lief.parse(executable)
arch = binary.abstract.header.architecture
os.remove(executable)
return arch
class TestSecurityChecks(unittest.TestCase):
def test_ELF(self):
source = "test1.c"
executable = "test1"
cc = determine_wellknown_cmd("CC", "gcc")
write_testcode(source)
arch = get_arch(cc, source, executable)
if arch == lief.ARCHITECTURES.X86:
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,-zexecstack",
"-fno-stack-protector",
"-Wl,-znorelro",
"-no-pie",
"-fno-PIE",
"-Wl,-z,separate-code",
],
),
(1, executable + ": failed PIE NX RELRO Canary CONTROL_FLOW"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,-znoexecstack",
"-fno-stack-protector",
"-Wl,-znorelro",
"-no-pie",
"-fno-PIE",
"-Wl,-z,separate-code",
],
),
(1, executable + ": failed PIE RELRO Canary CONTROL_FLOW"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,-znoexecstack",
"-fstack-protector-all",
"-Wl,-znorelro",
"-no-pie",
"-fno-PIE",
"-Wl,-z,separate-code",
],
),
(1, executable + ": failed PIE RELRO CONTROL_FLOW"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,-znoexecstack",
"-fstack-protector-all",
"-Wl,-znorelro",
"-pie",
"-fPIE",
"-Wl,-z,separate-code",
],
),
(1, executable + ": failed RELRO CONTROL_FLOW"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,-znoexecstack",
"-fstack-protector-all",
"-Wl,-zrelro",
"-Wl,-z,now",
"-pie",
"-fPIE",
"-Wl,-z,noseparate-code",
],
),
(1, executable + ": failed separate_code CONTROL_FLOW"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,-znoexecstack",
"-fstack-protector-all",
"-Wl,-zrelro",
"-Wl,-z,now",
"-pie",
"-fPIE",
"-Wl,-z,separate-code",
],
),
(1, executable + ": failed CONTROL_FLOW"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,-znoexecstack",
"-fstack-protector-all",
"-Wl,-zrelro",
"-Wl,-z,now",
"-pie",
"-fPIE",
"-Wl,-z,separate-code",
"-fcf-protection=full",
],
),
(0, ""),
)
else:
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,-zexecstack",
"-fno-stack-protector",
"-Wl,-znorelro",
"-no-pie",
"-fno-PIE",
"-Wl,-z,separate-code",
],
),
(1, executable + ": failed PIE NX RELRO Canary"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,-znoexecstack",
"-fno-stack-protector",
"-Wl,-znorelro",
"-no-pie",
"-fno-PIE",
"-Wl,-z,separate-code",
],
),
(1, executable + ": failed PIE RELRO Canary"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,-znoexecstack",
"-fstack-protector-all",
"-Wl,-znorelro",
"-no-pie",
"-fno-PIE",
"-Wl,-z,separate-code",
],
),
(1, executable + ": failed PIE RELRO"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,-znoexecstack",
"-fstack-protector-all",
"-Wl,-znorelro",
"-pie",
"-fPIE",
"-Wl,-z,separate-code",
],
),
(1, executable + ": failed RELRO"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,-znoexecstack",
"-fstack-protector-all",
"-Wl,-zrelro",
"-Wl,-z,now",
"-pie",
"-fPIE",
"-Wl,-z,noseparate-code",
],
),
(1, executable + ": failed separate_code"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,-znoexecstack",
"-fstack-protector-all",
"-Wl,-zrelro",
"-Wl,-z,now",
"-pie",
"-fPIE",
"-Wl,-z,separate-code",
],
),
(0, ""),
)
clean_files(source, executable)
def test_PE(self):
source = "test1.c"
executable = "test1.exe"
cc = determine_wellknown_cmd("CC", "x86_64-w64-mingw32-gcc")
write_testcode(source)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,--no-nxcompat",
"-Wl,--disable-reloc-section",
"-Wl,--no-dynamicbase",
"-Wl,--no-high-entropy-va",
"-no-pie",
"-fno-PIE",
],
),
(
1,
executable
+ ": failed PIE DYNAMIC_BASE HIGH_ENTROPY_VA NX RELOC_SECTION"
" CONTROL_FLOW",
),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,--nxcompat",
"-Wl,--disable-reloc-section",
"-Wl,--no-dynamicbase",
"-Wl,--no-high-entropy-va",
"-no-pie",
"-fno-PIE",
],
),
(
1,
executable + ": failed PIE DYNAMIC_BASE HIGH_ENTROPY_VA RELOC_SECTION"
" CONTROL_FLOW",
),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,--nxcompat",
"-Wl,--enable-reloc-section",
"-Wl,--no-dynamicbase",
"-Wl,--no-high-entropy-va",
"-no-pie",
"-fno-PIE",
],
),
(1, executable + ": failed PIE DYNAMIC_BASE HIGH_ENTROPY_VA CONTROL_FLOW"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,--nxcompat",
"-Wl,--enable-reloc-section",
"-Wl,--no-dynamicbase",
"-Wl,--no-high-entropy-va",
# -pie -fPIE does nothing unless --dynamicbase is also supplied
"-pie",
"-fPIE",
],
),
(1, executable + ": failed PIE DYNAMIC_BASE HIGH_ENTROPY_VA CONTROL_FLOW"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,--nxcompat",
"-Wl,--enable-reloc-section",
"-Wl,--dynamicbase",
"-Wl,--no-high-entropy-va",
"-pie",
"-fPIE",
],
),
(1, executable + ": failed HIGH_ENTROPY_VA CONTROL_FLOW"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,--nxcompat",
"-Wl,--enable-reloc-section",
"-Wl,--dynamicbase",
"-Wl,--high-entropy-va",
"-pie",
"-fPIE",
],
),
(1, executable + ": failed CONTROL_FLOW"),
)
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",
],
),
(0, ""),
)
clean_files(source, executable)
def test_MACHO(self):
source = "test1.c"
executable = "test1"
cc = determine_wellknown_cmd("CC", "clang")
write_testcode(source)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,-no_pie",
"-Wl,-flat_namespace",
"-Wl,-allow_stack_execute",
"-fno-stack-protector",
],
),
(1, executable + ": failed PIE NOUNDEFS NX Canary CONTROL_FLOW"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
[
"-Wl,-no_pie",
"-Wl,-flat_namespace",
"-Wl,-allow_stack_execute",
"-fstack-protector-all",
],
),
(1, executable + ": failed PIE NOUNDEFS NX CONTROL_FLOW"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
["-Wl,-no_pie", "-Wl,-flat_namespace", "-fstack-protector-all"],
),
(1, executable + ": failed PIE NOUNDEFS CONTROL_FLOW"),
)
self.assertEqual(
call_security_check(
cc, source, executable, ["-Wl,-no_pie", "-fstack-protector-all"]
),
(1, executable + ": failed PIE CONTROL_FLOW"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
["-Wl,-no_pie", "-fstack-protector-all", "-fcf-protection=full"],
),
(1, executable + ": failed PIE"),
)
self.assertEqual(
call_security_check(
cc,
source,
executable,
["-Wl,-pie", "-fstack-protector-all", "-fcf-protection=full"],
),
(0, ""),
)
clean_files(source, executable)
if __name__ == "__main__":
unittest.main()