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kernel-hardening-checker
Commit 5336858f by Alexander Popov
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Merge branch 'arch-changes-from-anthraxx'

parents 987a7f63 ff20d4b5
Showing with 174 additions and 170 deletions
kconfig-hardened-check.py
......@@ -17,201 +17,204 @@
# kernel.kptr_restrict=1
import sys
from collections import namedtuple
from argparse import ArgumentParser
from collections import OrderedDict
import re
debug_mode = False # set it to True to print the unknown options from the config
error_count = 0
opt_list = []
Opt = namedtuple('Opt', ['name', 'state', 'decision', 'reason'])
def construct_opt_list():
opt_list.append([Opt('BUG', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('PAGE_TABLE_ISOLATION', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('RETPOLINE', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('X86_64', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('STRICT_KERNEL_RWX', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('STRICT_MODULE_RWX', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('DEBUG_WX', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('RANDOMIZE_BASE', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('RANDOMIZE_MEMORY', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('CC_STACKPROTECTOR', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('CC_STACKPROTECTOR_STRONG','y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('VMAP_STACK', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('THREAD_INFO_IN_TASK', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('SCHED_STACK_END_CHECK', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('SLUB_DEBUG', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('SLAB_FREELIST_HARDENED', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('SLAB_FREELIST_RANDOM', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('HARDENED_USERCOPY', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('FORTIFY_SOURCE', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('MODULE_SIG', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('MODULE_SIG_ALL', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('MODULE_SIG_SHA512', 'y', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('SYN_COOKIES', 'y', 'ubuntu18', 'self_protection'), '']) # another reason?
opt_list.append([Opt('DEFAULT_MMAP_MIN_ADDR', '65536', 'ubuntu18', 'self_protection'), ''])
opt_list.append([Opt('BUG_ON_DATA_CORRUPTION', 'y', 'kspp', 'self_protection'), ''])
opt_list.append([Opt('PAGE_POISONING', 'y', 'kspp', 'self_protection'), ''])
opt_list.append([Opt('GCC_PLUGINS', 'y', 'kspp', 'self_protection'), ''])
opt_list.append([Opt('GCC_PLUGIN_RANDSTRUCT', 'y', 'kspp', 'self_protection'), ''])
opt_list.append([Opt('GCC_PLUGIN_STRUCTLEAK', 'y', 'kspp', 'self_protection'), ''])
opt_list.append([Opt('GCC_PLUGIN_STRUCTLEAK_BYREF_ALL', 'y', 'kspp', 'self_protection'), ''])
opt_list.append([Opt('GCC_PLUGIN_LATENT_ENTROPY', 'y', 'kspp', 'self_protection'), ''])
opt_list.append([Opt('REFCOUNT_FULL', 'y', 'kspp', 'self_protection'), ''])
opt_list.append([Opt('DEBUG_LIST', 'y', 'kspp', 'self_protection'), ''])
opt_list.append([Opt('DEBUG_SG', 'y', 'kspp', 'self_protection'), ''])
opt_list.append([Opt('DEBUG_CREDENTIALS', 'y', 'kspp', 'self_protection'), ''])
opt_list.append([Opt('DEBUG_NOTIFIERS', 'y', 'kspp', 'self_protection'), ''])
opt_list.append([Opt('MODULE_SIG_FORCE', 'y', 'kspp', 'self_protection'), ''])
opt_list.append([Opt('HARDENED_USERCOPY_FALLBACK', 'is not set', 'kspp', 'self_protection'), ''])
opt_list.append([Opt('GCC_PLUGIN_STACKLEAK', 'y', 'my', 'self_protection'), ''])
opt_list.append([Opt('SLUB_DEBUG_ON', 'y', 'my', 'self_protection'), ''])
opt_list.append([Opt('SECURITY_DMESG_RESTRICT', 'y', 'my', 'self_protection'), ''])
opt_list.append([Opt('STATIC_USERMODEHELPER', 'y', 'my', 'self_protection'), '']) # breaks systemd?
opt_list.append([Opt('PAGE_POISONING_NO_SANITY', 'is not set', 'my', 'self_protection'), ''])
opt_list.append([Opt('PAGE_POISONING_ZERO', 'is not set', 'my', 'self_protection'), ''])
opt_list.append([Opt('SECURITY', 'y', 'ubuntu18', 'security_policy'), ''])
opt_list.append([Opt('SECURITY_YAMA', 'y', 'ubuntu18', 'security_policy'), ''])
opt_list.append([Opt('SECURITY_SELINUX_DISABLE', 'is not set', 'ubuntu18', 'security_policy'), ''])
opt_list.append([Opt('SECCOMP', 'y', 'ubuntu18', 'cut_attack_surface'), ''])
opt_list.append([Opt('SECCOMP_FILTER', 'y', 'ubuntu18', 'cut_attack_surface'), ''])
opt_list.append([Opt('STRICT_DEVMEM', 'y', 'ubuntu18', 'cut_attack_surface'), ''])
opt_list.append([Opt('ACPI_CUSTOM_METHOD', 'is not set', 'ubuntu18', 'cut_attack_surface'), ''])
opt_list.append([Opt('COMPAT_BRK', 'is not set', 'ubuntu18', 'cut_attack_surface'), ''])
opt_list.append([Opt('DEVKMEM', 'is not set', 'ubuntu18', 'cut_attack_surface'), ''])
opt_list.append([Opt('COMPAT_VDSO', 'is not set', 'ubuntu18', 'cut_attack_surface'), ''])
opt_list.append([Opt('X86_PTDUMP', 'is not set', 'ubuntu18', 'cut_attack_surface'), ''])
opt_list.append([Opt('ZSMALLOC_STAT', 'is not set', 'ubuntu18', 'cut_attack_surface'), ''])
opt_list.append([Opt('PAGE_OWNER', 'is not set', 'ubuntu18', 'cut_attack_surface'), ''])
opt_list.append([Opt('DEBUG_KMEMLEAK', 'is not set', 'ubuntu18', 'cut_attack_surface'), ''])
opt_list.append([Opt('IO_STRICT_DEVMEM', 'y', 'kspp', 'cut_attack_surface'), ''])
opt_list.append([Opt('LEGACY_VSYSCALL_NONE', 'y', 'kspp', 'cut_attack_surface'), '']) # 'vsyscall=none'
opt_list.append([Opt('BINFMT_MISC', 'is not set', 'kspp', 'cut_attack_surface'), ''])
opt_list.append([Opt('INET_DIAG', 'is not set', 'kspp', 'cut_attack_surface'), ''])
opt_list.append([Opt('KEXEC', 'is not set', 'kspp', 'cut_attack_surface'), ''])
opt_list.append([Opt('PROC_KCORE', 'is not set', 'kspp', 'cut_attack_surface'), ''])
opt_list.append([Opt('LEGACY_PTYS', 'is not set', 'kspp', 'cut_attack_surface'), ''])
opt_list.append([Opt('IA32_EMULATION', 'is not set', 'kspp', 'cut_attack_surface'), ''])
opt_list.append([Opt('X86_X32', 'is not set', 'kspp', 'cut_attack_surface'), ''])
opt_list.append([Opt('MODIFY_LDT_SYSCALL', 'is not set', 'kspp', 'cut_attack_surface'), ''])
opt_list.append([Opt('HIBERNATION', 'is not set', 'kspp', 'cut_attack_surface'), ''])
opt_list.append([Opt('KPROBES', 'is not set', 'grsecurity', 'cut_attack_surface'), ''])
opt_list.append([Opt('UPROBES', 'is not set', 'grsecurity', 'cut_attack_surface'), ''])
opt_list.append([Opt('GENERIC_TRACER', 'is not set', 'grsecurity', 'cut_attack_surface'), ''])
opt_list.append([Opt('PROC_VMCORE', 'is not set', 'grsecurity', 'cut_attack_surface'), ''])
opt_list.append([Opt('PROC_PAGE_MONITOR', 'is not set', 'grsecurity', 'cut_attack_surface'), ''])
opt_list.append([Opt('USELIB', 'is not set', 'grsecurity', 'cut_attack_surface'), ''])
opt_list.append([Opt('CHECKPOINT_RESTORE', 'is not set', 'grsecurity', 'cut_attack_surface'), ''])
opt_list.append([Opt('USERFAULTFD', 'is not set', 'grsecurity', 'cut_attack_surface'), ''])
opt_list.append([Opt('HWPOISON_INJECT', 'is not set', 'grsecurity', 'cut_attack_surface'), ''])
opt_list.append([Opt('MEM_SOFT_DIRTY', 'is not set', 'grsecurity', 'cut_attack_surface'), ''])
opt_list.append([Opt('DEVPORT', 'is not set', 'grsecurity', 'cut_attack_surface'), ''])
opt_list.append([Opt('DEBUG_FS', 'is not set', 'grsecurity', 'cut_attack_surface'), ''])
opt_list.append([Opt('NOTIFIER_ERROR_INJECTION','is not set', 'grsecurity', 'cut_attack_surface'), ''])
opt_list.append([Opt('KEXEC_FILE', 'is not set', 'my', 'cut_attack_surface'), ''])
opt_list.append([Opt('LIVEPATCH', 'is not set', 'my', 'cut_attack_surface'), ''])
opt_list.append([Opt('USER_NS', 'is not set', 'my', 'cut_attack_surface'), '']) # user.max_user_namespaces=0
opt_list.append([Opt('IP_DCCP', 'is not set', 'my', 'cut_attack_surface'), ''])
opt_list.append([Opt('IP_SCTP', 'is not set', 'my', 'cut_attack_surface'), ''])
opt_list.append([Opt('FTRACE', 'is not set', 'my', 'cut_attack_surface'), ''])
opt_list.append([Opt('PROFILING', 'is not set', 'my', 'cut_attack_surface'), ''])
opt_list.append([Opt('BPF_JIT', 'is not set', 'my', 'cut_attack_surface'), ''])
opt_list.append([Opt('BPF_SYSCALL', 'is not set', 'my', 'cut_attack_surface'), ''])
opt_list.append([Opt('ARCH_MMAP_RND_BITS', '32', 'my', 'userspace_protection'), ''])
opt_list.append([Opt('LKDTM', 'm', 'my', 'feature_test'), ''])
def print_opt_list():
checklist = []
class OptCheck:
def __init__(self, name, expected, decision, reason):
self.name = name
self.expected = expected
self.decision = decision
self.reason = reason
self.state = None
self.result = None
def check(self):
if self.expected == self.state:
self.result = 'OK'
elif self.state is None:
if self.expected == 'is not set':
self.result = 'OK: not found'
else:
self.result = 'FAIL: not found'
else:
self.result = 'FAIL: "' + self.state + '"'
def __repr__(self):
return '{} = {}'.format(self.name, self.state)
def construct_opt_checks():
checklist.append(OptCheck('BUG', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('PAGE_TABLE_ISOLATION', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('RETPOLINE', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('X86_64', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('STRICT_KERNEL_RWX', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('STRICT_MODULE_RWX', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('DEBUG_WX', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('RANDOMIZE_BASE', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('RANDOMIZE_MEMORY', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('CC_STACKPROTECTOR', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('CC_STACKPROTECTOR_STRONG','y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('VMAP_STACK', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('THREAD_INFO_IN_TASK', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('SCHED_STACK_END_CHECK', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('SLUB_DEBUG', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('SLAB_FREELIST_HARDENED', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('SLAB_FREELIST_RANDOM', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('HARDENED_USERCOPY', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('FORTIFY_SOURCE', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('MODULE_SIG', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('MODULE_SIG_ALL', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('MODULE_SIG_SHA512', 'y', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('SYN_COOKIES', 'y', 'ubuntu18', 'self_protection')) # another reason?
checklist.append(OptCheck('DEFAULT_MMAP_MIN_ADDR', '65536', 'ubuntu18', 'self_protection'))
checklist.append(OptCheck('BUG_ON_DATA_CORRUPTION', 'y', 'kspp', 'self_protection'))
checklist.append(OptCheck('PAGE_POISONING', 'y', 'kspp', 'self_protection'))
checklist.append(OptCheck('GCC_PLUGINS', 'y', 'kspp', 'self_protection'))
checklist.append(OptCheck('GCC_PLUGIN_RANDSTRUCT', 'y', 'kspp', 'self_protection'))
checklist.append(OptCheck('GCC_PLUGIN_STRUCTLEAK', 'y', 'kspp', 'self_protection'))
checklist.append(OptCheck('GCC_PLUGIN_STRUCTLEAK_BYREF_ALL', 'y', 'kspp', 'self_protection'))
checklist.append(OptCheck('GCC_PLUGIN_LATENT_ENTROPY', 'y', 'kspp', 'self_protection'))
checklist.append(OptCheck('REFCOUNT_FULL', 'y', 'kspp', 'self_protection'))
checklist.append(OptCheck('DEBUG_LIST', 'y', 'kspp', 'self_protection'))
checklist.append(OptCheck('DEBUG_SG', 'y', 'kspp', 'self_protection'))
checklist.append(OptCheck('DEBUG_CREDENTIALS', 'y', 'kspp', 'self_protection'))
checklist.append(OptCheck('DEBUG_NOTIFIERS', 'y', 'kspp', 'self_protection'))
checklist.append(OptCheck('MODULE_SIG_FORCE', 'y', 'kspp', 'self_protection'))
checklist.append(OptCheck('HARDENED_USERCOPY_FALLBACK', 'is not set', 'kspp', 'self_protection'))
checklist.append(OptCheck('GCC_PLUGIN_STACKLEAK', 'y', 'my', 'self_protection'))
checklist.append(OptCheck('SLUB_DEBUG_ON', 'y', 'my', 'self_protection'))
checklist.append(OptCheck('SECURITY_DMESG_RESTRICT', 'y', 'my', 'self_protection'))
checklist.append(OptCheck('STATIC_USERMODEHELPER', 'y', 'my', 'self_protection')) # breaks systemd?
checklist.append(OptCheck('PAGE_POISONING_NO_SANITY', 'is not set', 'my', 'self_protection'))
checklist.append(OptCheck('PAGE_POISONING_ZERO', 'is not set', 'my', 'self_protection'))
checklist.append(OptCheck('SECURITY', 'y', 'ubuntu18', 'security_policy'))
checklist.append(OptCheck('SECURITY_YAMA', 'y', 'ubuntu18', 'security_policy'))
checklist.append(OptCheck('SECURITY_SELINUX_DISABLE', 'is not set', 'ubuntu18', 'security_policy'))
checklist.append(OptCheck('SECCOMP', 'y', 'ubuntu18', 'cut_attack_surface'))
checklist.append(OptCheck('SECCOMP_FILTER', 'y', 'ubuntu18', 'cut_attack_surface'))
checklist.append(OptCheck('STRICT_DEVMEM', 'y', 'ubuntu18', 'cut_attack_surface'))
checklist.append(OptCheck('ACPI_CUSTOM_METHOD', 'is not set', 'ubuntu18', 'cut_attack_surface'))
checklist.append(OptCheck('COMPAT_BRK', 'is not set', 'ubuntu18', 'cut_attack_surface'))
checklist.append(OptCheck('DEVKMEM', 'is not set', 'ubuntu18', 'cut_attack_surface'))
checklist.append(OptCheck('COMPAT_VDSO', 'is not set', 'ubuntu18', 'cut_attack_surface'))
checklist.append(OptCheck('X86_PTDUMP', 'is not set', 'ubuntu18', 'cut_attack_surface'))
checklist.append(OptCheck('ZSMALLOC_STAT', 'is not set', 'ubuntu18', 'cut_attack_surface'))
checklist.append(OptCheck('PAGE_OWNER', 'is not set', 'ubuntu18', 'cut_attack_surface'))
checklist.append(OptCheck('DEBUG_KMEMLEAK', 'is not set', 'ubuntu18', 'cut_attack_surface'))
checklist.append(OptCheck('IO_STRICT_DEVMEM', 'y', 'kspp', 'cut_attack_surface'))
checklist.append(OptCheck('LEGACY_VSYSCALL_NONE', 'y', 'kspp', 'cut_attack_surface')) # 'vsyscall=none'
checklist.append(OptCheck('BINFMT_MISC', 'is not set', 'kspp', 'cut_attack_surface'))
checklist.append(OptCheck('INET_DIAG', 'is not set', 'kspp', 'cut_attack_surface'))
checklist.append(OptCheck('KEXEC', 'is not set', 'kspp', 'cut_attack_surface'))
checklist.append(OptCheck('PROC_KCORE', 'is not set', 'kspp', 'cut_attack_surface'))
checklist.append(OptCheck('LEGACY_PTYS', 'is not set', 'kspp', 'cut_attack_surface'))
checklist.append(OptCheck('IA32_EMULATION', 'is not set', 'kspp', 'cut_attack_surface'))
checklist.append(OptCheck('X86_X32', 'is not set', 'kspp', 'cut_attack_surface'))
checklist.append(OptCheck('MODIFY_LDT_SYSCALL', 'is not set', 'kspp', 'cut_attack_surface'))
checklist.append(OptCheck('HIBERNATION', 'is not set', 'kspp', 'cut_attack_surface'))
checklist.append(OptCheck('KPROBES', 'is not set', 'grsecurity', 'cut_attack_surface'))
checklist.append(OptCheck('UPROBES', 'is not set', 'grsecurity', 'cut_attack_surface'))
checklist.append(OptCheck('GENERIC_TRACER', 'is not set', 'grsecurity', 'cut_attack_surface'))
checklist.append(OptCheck('PROC_VMCORE', 'is not set', 'grsecurity', 'cut_attack_surface'))
checklist.append(OptCheck('PROC_PAGE_MONITOR', 'is not set', 'grsecurity', 'cut_attack_surface'))
checklist.append(OptCheck('USELIB', 'is not set', 'grsecurity', 'cut_attack_surface'))
checklist.append(OptCheck('CHECKPOINT_RESTORE', 'is not set', 'grsecurity', 'cut_attack_surface'))
checklist.append(OptCheck('USERFAULTFD', 'is not set', 'grsecurity', 'cut_attack_surface'))
checklist.append(OptCheck('HWPOISON_INJECT', 'is not set', 'grsecurity', 'cut_attack_surface'))
checklist.append(OptCheck('MEM_SOFT_DIRTY', 'is not set', 'grsecurity', 'cut_attack_surface'))
checklist.append(OptCheck('DEVPORT', 'is not set', 'grsecurity', 'cut_attack_surface'))
checklist.append(OptCheck('DEBUG_FS', 'is not set', 'grsecurity', 'cut_attack_surface'))
checklist.append(OptCheck('NOTIFIER_ERROR_INJECTION','is not set', 'grsecurity', 'cut_attack_surface'))
checklist.append(OptCheck('KEXEC_FILE', 'is not set', 'my', 'cut_attack_surface'))
checklist.append(OptCheck('LIVEPATCH', 'is not set', 'my', 'cut_attack_surface'))
checklist.append(OptCheck('USER_NS', 'is not set', 'my', 'cut_attack_surface')) # user.max_user_namespaces=0
checklist.append(OptCheck('IP_DCCP', 'is not set', 'my', 'cut_attack_surface'))
checklist.append(OptCheck('IP_SCTP', 'is not set', 'my', 'cut_attack_surface'))
checklist.append(OptCheck('FTRACE', 'is not set', 'my', 'cut_attack_surface'))
checklist.append(OptCheck('PROFILING', 'is not set', 'my', 'cut_attack_surface'))
checklist.append(OptCheck('BPF_JIT', 'is not set', 'my', 'cut_attack_surface'))
checklist.append(OptCheck('BPF_SYSCALL', 'is not set', 'my', 'cut_attack_surface'))
checklist.append(OptCheck('ARCH_MMAP_RND_BITS', '32', 'my', 'userspace_protection'))
checklist.append(OptCheck('LKDTM', 'm', 'my', 'feature_test'))
def print_opt_checks():
print('[+] Printing kernel hardening preferences...')
print(' {:<39}|{:^13}|{:^10}|{:^20}'.format('option name', 'desired val', 'decision', 'reason'))
print(' ======================================================================================')
for o in opt_list:
print(' CONFIG_{:<32}|{:^13}|{:^10}|{:^20}'.format(o[0].name, o[0].state, o[0].decision, o[0].reason))
for opt in checklist:
print(' CONFIG_{:<32}|{:^13}|{:^10}|{:^20}'.format(opt.name, opt.expected, opt.decision, opt.reason))
print()
def print_check_results():
global error_count
print(' {:<39}|{:^13}|{:^10}|{:^20}||{:^20}'.format('option name', 'desired val', 'decision', 'reason', 'check result'))
print(' ===========================================================================================================')
for o in opt_list:
if o[1] == '':
if o[0].state == 'is not set':
o[1] = 'OK: not found'
else:
error_count += 1
o[1] = 'FAIL: not found'
print(' CONFIG_{:<32}|{:^13}|{:^10}|{:^20}||{:^20}'.format(o[0].name, o[0].state, o[0].decision, o[0].reason, o[1]))
for opt in checklist:
print(' CONFIG_{:<32}|{:^13}|{:^10}|{:^20}||{:^20}'.format(opt.name, opt.expected, opt.decision, opt.reason, opt.result))
print()
def check_state(option):
global error_count
found = False
for o in opt_list:
if option[0] == o[0].name:
found = True
if o[1] != '':
sys.exit('[!] BUG: CONFIG_{} was found more than once'.format(o[0].name))
if option[1] == o[0].state:
o[1] = 'OK'
else:
o[1] = 'FAIL: "' + option[1] + '"'
error_count += 1
if not found and debug_mode:
print("DEBUG: dunno about option {} ".format(option))
def get_option_state(options, name):
return options[name] if name in options else None
def check_on(line):
if line[:7] != 'CONFIG_':
sys.exit('[!] BUG: bad enabled config option "{}"'.format(line))
line_parts = line[7:].split('=')
check_state(line_parts)
def perform_checks(parsed_options):
for opt in checklist:
opt.state = get_option_state(parsed_options, opt.name)
opt.check()
def check_off(line):
if line[:9] != '# CONFIG_':
sys.exit('[!] BUG: bad disabled config option "{}"'.format(line))
def check_config_file(fname):
with open(fname, 'r') as f:
parsed_options = OrderedDict()
opt_is_on = re.compile("CONFIG_[a-zA-Z0-9_]*=[a-zA-Z0-9_\"]*")
opt_is_off = re.compile("# CONFIG_[a-zA-Z0-9_]* is not set")
line_parts = line[9:].split(' ', 1)
print('[+] Checking "{}" against hardening preferences...'.format(fname))
for line in f.readlines():
line = line.strip()
option = None
value = None
if line_parts[1] != 'is not set':
sys.exit('[!] BUG: bad disabled config option "{}"'.format(line))
if opt_is_on.match(line):
option, value = line[7:].split('=', 1)
elif opt_is_off.match(line):
option, value = line[9:].split(' ', 1)
if value != 'is not set':
sys.exit('[!] ERROR: bad disabled config option "{}"'.format(line))
check_state(line_parts)
if option in parsed_options:
sys.exit('[!] ERROR: config option "{}" exists multiple times'.format(line))
if option is not None:
parsed_options[option] = value
def check_config_file(fname):
f = open(fname, 'r')
perform_checks(parsed_options)
print('[+] Checking "{}" against hardening preferences...'.format(fname))
for line in f:
opt_is_on = re.compile("CONFIG_[a-zA-Z0-9_]*=[a-zA-Z0-9_\"]*")
opt_is_off = re.compile("# CONFIG_[a-zA-Z0-9_]* is not set")
if opt_is_on.match(line):
check_on(line[:-1]) # drop newline
if opt_is_off.match(line):
check_off(line[:-1]) # ditto
if debug_mode:
known_options = [opt.name for opt in checklist]
for option, value in parsed_options.items():
if option not in known_options:
print("DEBUG: dunno about option {} ({})".format(option, value))
print_check_results()
f.close()
print_check_results()
if __name__ == '__main__':
......@@ -221,10 +224,10 @@ if __name__ == '__main__':
parser.add_argument('--debug', action='store_true', help='enable internal debug mode')
args = parser.parse_args()
construct_opt_list()
construct_opt_checks()
if args.print:
print_opt_list()
print_opt_checks()
sys.exit(0)
if args.debug:
......@@ -232,6 +235,7 @@ if __name__ == '__main__':
if args.config:
check_config_file(args.config)
error_count = len(list(filter(lambda opt: opt.result.startswith('FAIL'), checklist)))
if error_count == 0:
print('[+] config check is PASSED')
sys.exit(0)
......
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