self.opts = opts
self.result = None
+ # self.opts[0] is the option which this OR-check is about.
+ # Use case: OR(<X_is_hardened>, <X_is_disabled>)
+
@property
def name(self):
return self.opts[0].name
return self.opts[0].reason
def check(self):
- for opt in self.opts:
+ for i, opt in enumerate(self.opts):
result, msg = opt.check()
if result:
- self.result = 'OK (CONFIG_{} {})'.format(opt.name, opt.state)
- return result, self.result
- self.result = 'FAIL: "{}"'.format(self.opts[0].state)
+ if i == 0:
+ self.result = opt.result
+ else:
+ self.result = 'CONFIG_{}: {} ("{}")'.format(opt.name, opt.result, opt.expected)
+ return True, self.result
+ self.result = self.opts[0].result
return False, self.result
def construct_opt_checks():
+ modules_not_set = OptCheck('MODULES', 'is not set', 'kspp', 'cut_attack_surface')
+ devmem_not_set = OptCheck('DEVMEM', 'is not set', 'kspp', 'cut_attack_surface')
+
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('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(OR(OptCheck('STACKPROTECTOR_STRONG','y', 'ubuntu18', 'self_protection'), \
+ 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('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(OR(OptCheck('MODULE_SIG', 'y', 'ubuntu18', 'self_protection'), modules_not_set))
+ checklist.append(OR(OptCheck('MODULE_SIG_ALL', 'y', 'ubuntu18', 'self_protection'), modules_not_set))
+ checklist.append(OR(OptCheck('MODULE_SIG_SHA512', 'y', 'ubuntu18', 'self_protection'), modules_not_set))
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('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(OR(OptCheck('STRICT_DEVMEM', 'y', 'ubuntu18', 'cut_attack_surface'), devmem_not_set))
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('DEBUG_KMEMLEAK', 'is not set', 'ubuntu18', 'cut_attack_surface'))
checklist.append(OptCheck('BINFMT_AOUT', 'is not set', 'ubuntu18', 'cut_attack_surface'))
- checklist.append(OptCheck('IO_STRICT_DEVMEM', 'y', 'kspp', 'cut_attack_surface'))
+ checklist.append(OR(OptCheck('IO_STRICT_DEVMEM', 'y', 'kspp', 'cut_attack_surface'), devmem_not_set))
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('ARCH_MMAP_RND_BITS', '32', 'my', 'userspace_protection'))
- checklist.append(OptCheck('LKDTM', 'm', 'my', 'feature_test'))
+# checklist.append(OptCheck('LKDTM', 'm', 'my', 'feature_test'))
def print_opt_checks():
def print_check_results():
- print(' {:<39}|{:^13}|{:^10}|{:^20}||{:^20}'.format('option name', 'desired val', 'decision', 'reason', 'check result'))
- print(' ===========================================================================================================')
+ print(' {:<39}|{:^13}|{:^10}|{:^20}||{:^28}'.format('option name', 'desired val', 'decision', 'reason', 'check result'))
+ print(' ===================================================================================================================')
for opt in checklist:
- print(' CONFIG_{:<32}|{:^13}|{:^10}|{:^20}||{:^20}'.format(opt.name, opt.expected, opt.decision, opt.reason, opt.result))
+ print(' CONFIG_{:<32}|{:^13}|{:^10}|{:^20}||{:^28}'.format(opt.name, opt.expected, opt.decision, opt.reason, opt.result))
print()