X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=kconfig-hardened-check.py;h=85445b5d2c977a9bd0d163137d26df2edc157499;hb=9851d4f82f4dad8a93afa7de2a3f7348b1f1905e;hp=2084ea8bbb63a7b7d4421e984fc067d533c103d1;hpb=918b12cf6f652ad148c885d1a802459e73d20c48;p=kconfig-hardened-check.git diff --git a/kconfig-hardened-check.py b/kconfig-hardened-check.py index 2084ea8..85445b5 100755 --- a/kconfig-hardened-check.py +++ b/kconfig-hardened-check.py @@ -18,6 +18,8 @@ # page_alloc.shuffle=1 # iommu=force (does it help against DMA attacks?) # page_poison=1 (if enabled) +# init_on_alloc=1 +# init_on_free=1 # # Mitigations of CPU vulnerabilities: # Аrch-independent: @@ -84,9 +86,6 @@ class OptCheck: else: return False, self.result - def __repr__(self): - return '{} = {}'.format(self.name, self.state) - class VerCheck: def __init__(self, ver_expected): @@ -232,6 +231,8 @@ def construct_checklist(checklist, arch): OptCheck('DEBUG_SET_MODULE_RONX', 'y', 'defconfig', 'self_protection'), \ modules_not_set)) # DEBUG_SET_MODULE_RONX was before v4.11 checklist.append(OptCheck('GCC_PLUGINS', 'y', 'defconfig', 'self_protection')) + checklist.append(OR(OptCheck('REFCOUNT_FULL', 'y', 'defconfig', 'self_protection'), \ + VerCheck((5, 5)))) # REFCOUNT_FULL is enabled by default since v5.5 if debug_mode or arch == 'X86_64' or arch == 'X86_32': checklist.append(OptCheck('MICROCODE', 'y', 'defconfig', 'self_protection')) # is needed for mitigating CPU bugs checklist.append(OptCheck('RETPOLINE', 'y', 'defconfig', 'self_protection')) @@ -262,7 +263,6 @@ def construct_checklist(checklist, arch): checklist.append(OptCheck('CPU_SW_DOMAIN_PAN', 'y', 'defconfig', 'self_protection')) checklist.append(OptCheck('STACKPROTECTOR_PER_TASK', 'y', 'defconfig', 'self_protection')) if debug_mode or arch == 'ARM64' or arch == 'ARM': - checklist.append(OptCheck('REFCOUNT_FULL', 'y', 'defconfig', 'self_protection')) checklist.append(OptCheck('HARDEN_BRANCH_PREDICTOR', 'y', 'defconfig', 'self_protection')) checklist.append(OptCheck('BUG_ON_DATA_CORRUPTION', 'y', 'kspp', 'self_protection')) @@ -291,9 +291,20 @@ def construct_checklist(checklist, arch): modules_not_set)) checklist.append(OR(OptCheck('MODULE_SIG_FORCE', 'y', 'kspp', 'self_protection'), \ modules_not_set)) # refers to LOCK_DOWN_KERNEL + checklist.append(OR(OptCheck('INIT_STACK_ALL', 'y', 'kspp', 'self_protection'), \ + OptCheck('GCC_PLUGIN_STRUCTLEAK_BYREF_ALL', 'y', 'kspp', 'self_protection'))) + checklist.append(OptCheck('INIT_ON_ALLOC_DEFAULT_ON', 'y', 'kspp', 'self_protection')) + checklist.append(OR(OptCheck('INIT_ON_FREE_DEFAULT_ON', 'y', 'kspp', 'self_protection'), \ + OptCheck('PAGE_POISONING', 'y', 'kspp', 'self_protection'))) # before v5.3 + if debug_mode or arch == 'X86_64' or arch == 'ARM64' or arch == 'X86_32': + stackleak_is_set = OptCheck('GCC_PLUGIN_STACKLEAK', 'y', 'kspp', 'self_protection') + checklist.append(stackleak_is_set) + checklist.append(AND(OptCheck('STACKLEAK_METRICS', 'is not set', 'clipos', 'self_protection'), \ + stackleak_is_set)) + checklist.append(AND(OptCheck('STACKLEAK_RUNTIME_DISABLE', 'is not set', 'clipos', 'self_protection'), \ + stackleak_is_set)) if debug_mode or arch == 'X86_64' or arch == 'X86_32': checklist.append(OptCheck('DEFAULT_MMAP_MIN_ADDR', '65536', 'kspp', 'self_protection')) - checklist.append(OptCheck('REFCOUNT_FULL', 'y', 'kspp', 'self_protection')) if debug_mode or arch == 'X86_32': checklist.append(OptCheck('HIGHMEM64G', 'y', 'kspp', 'self_protection')) checklist.append(OptCheck('X86_PAE', 'y', 'kspp', 'self_protection')) @@ -303,24 +314,12 @@ def construct_checklist(checklist, arch): checklist.append(OptCheck('SYN_COOKIES', 'y', 'kspp', 'self_protection')) # another reason? checklist.append(OptCheck('DEFAULT_MMAP_MIN_ADDR', '32768', 'kspp', 'self_protection')) - checklist.append(OR(OptCheck('INIT_STACK_ALL', 'y', 'clipos', 'self_protection'), \ - OptCheck('GCC_PLUGIN_STRUCTLEAK_BYREF_ALL', 'y', 'kspp', 'self_protection'))) - checklist.append(OptCheck('INIT_ON_ALLOC_DEFAULT_ON', 'y', 'clipos', 'self_protection')) - checklist.append(OR(OptCheck('INIT_ON_FREE_DEFAULT_ON', 'y', 'clipos', 'self_protection'), \ - OptCheck('PAGE_POISONING', 'y', 'kspp', 'self_protection'))) checklist.append(OptCheck('SECURITY_DMESG_RESTRICT', 'y', 'clipos', 'self_protection')) checklist.append(OptCheck('DEBUG_VIRTUAL', 'y', 'clipos', 'self_protection')) checklist.append(OptCheck('STATIC_USERMODEHELPER', 'y', 'clipos', 'self_protection')) # needs userspace support (systemd) checklist.append(OptCheck('SLAB_MERGE_DEFAULT', 'is not set', 'clipos', 'self_protection')) # slab_nomerge checklist.append(AND(OptCheck('GCC_PLUGIN_RANDSTRUCT_PERFORMANCE', 'is not set', 'clipos', 'self_protection'), \ randstruct_is_set)) - if debug_mode or arch == 'X86_64' or arch == 'ARM64' or arch == 'X86_32': - stackleak_is_set = OptCheck('GCC_PLUGIN_STACKLEAK', 'y', 'clipos', 'self_protection') - checklist.append(stackleak_is_set) - checklist.append(AND(OptCheck('STACKLEAK_METRICS', 'is not set', 'clipos', 'self_protection'), \ - stackleak_is_set)) - checklist.append(AND(OptCheck('STACKLEAK_RUNTIME_DISABLE', 'is not set', 'clipos', 'self_protection'), \ - stackleak_is_set)) if debug_mode or arch == 'X86_64' or arch == 'X86_32': checklist.append(OptCheck('RANDOM_TRUST_CPU', 'is not set', 'clipos', 'self_protection')) checklist.append(AND(OptCheck('INTEL_IOMMU_SVM', 'y', 'clipos', 'self_protection'), \ @@ -411,7 +410,8 @@ def construct_checklist(checklist, arch): checklist.append(OptCheck('MAGIC_SYSRQ', 'is not set', 'clipos', 'cut_attack_surface')) checklist.append(OptCheck('KEXEC_FILE', 'is not set', 'clipos', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL (permissive) checklist.append(OptCheck('USER_NS', 'is not set', 'clipos', 'cut_attack_surface')) # user.max_user_namespaces=0 - checklist.append(OptCheck('LDISC_AUTOLOAD', 'is not set', 'clipos', 'cut_attack_surface')) + checklist.append(AND(OptCheck('LDISC_AUTOLOAD', 'is not set', 'clipos', 'cut_attack_surface'), \ + VerCheck((5, 1)))) # LDISC_AUTOLOAD can be disabled since v5.1 checklist.append(OptCheck('MMIOTRACE', 'is not set', 'my', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL (permissive) checklist.append(OptCheck('LIVEPATCH', 'is not set', 'my', 'cut_attack_surface')) @@ -444,14 +444,15 @@ def print_checklist(checklist, with_results): print(json.dumps(opts)) return - # header - print('{:^45}|{:^13}|{:^10}|{:^20}'.format('option name', 'desired val', 'decision', 'reason'), end='') + # table header sep_line_len = 91 if with_results: - print('| {}'.format('check result'), end='') sep_line_len += 30 + print('=' * sep_line_len) + print('{:^45}|{:^13}|{:^10}|{:^20}'.format('option name', 'desired val', 'decision', 'reason'), end='') + if with_results: + print('| {}'.format('check result'), end='') print() - print('=' * sep_line_len) for opt in checklist: