X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=kconfig-hardened-check.py;h=86e0d0198cd90b5c82f849d8f70f1f0104d5960c;hb=3630552c4a7cb10c3fb449b1f38d629744a3f91a;hp=2973a0a585d8d2c4e580abdea0c29a66c46bd550;hpb=317a089b83ae5ccbb25ff9eff67d1fff46e7f6f2;p=kconfig-hardened-check.git diff --git a/kconfig-hardened-check.py b/kconfig-hardened-check.py index 2973a0a..86e0d01 100755 --- a/kconfig-hardened-check.py +++ b/kconfig-hardened-check.py @@ -11,13 +11,13 @@ # # # N.B Hardening command line parameters: -# page_poison=1 # slub_debug=FZP # slab_nomerge # kernel.kptr_restrict=1 # lockdown=1 (is it changed?) # page_alloc.shuffle=1 # iommu=force (does it help against DMA attacks?) +# page_poison=1 (if enabled) # # Mitigations of CPU vulnerabilities: # Аrch-independent: @@ -187,7 +187,6 @@ 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 if debug_mode or arch == 'X86_64' or arch == 'X86_32': - checklist.append(OptCheck('RANDOMIZE_BASE', 'y', 'defconfig', 'self_protection')) checklist.append(OptCheck('MICROCODE', 'y', 'defconfig', 'self_protection')) # is needed for mitigating CPU bugs checklist.append(OptCheck('RETPOLINE', 'y', 'defconfig', 'self_protection')) checklist.append(OptCheck('X86_SMAP', 'y', 'defconfig', 'self_protection')) @@ -210,6 +209,7 @@ def construct_checklist(checklist, arch): if debug_mode or arch == 'X86_64' or arch == 'ARM64': checklist.append(OptCheck('VMAP_STACK', 'y', 'defconfig', 'self_protection')) if debug_mode or arch == 'X86_64' or arch == 'ARM64' or arch == 'X86_32': + checklist.append(OptCheck('RANDOMIZE_BASE', 'y', 'defconfig', 'self_protection')) checklist.append(OptCheck('THREAD_INFO_IN_TASK', 'y', 'defconfig', 'self_protection')) if debug_mode or arch == 'ARM': checklist.append(OptCheck('VMSPLIT_3G', 'y', 'defconfig', 'self_protection')) @@ -233,8 +233,6 @@ def construct_checklist(checklist, arch): 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')) - page_poisoning_is_set = OptCheck('PAGE_POISONING', 'y', 'kspp', 'self_protection') - checklist.append(page_poisoning_is_set) hardened_usercopy_is_set = OptCheck('HARDENED_USERCOPY', 'y', 'kspp', 'self_protection') checklist.append(hardened_usercopy_is_set) checklist.append(AND(OptCheck('HARDENED_USERCOPY_FALLBACK', 'is not set', 'kspp', 'self_protection'), \ @@ -255,7 +253,6 @@ def construct_checklist(checklist, arch): checklist.append(OptCheck('X86_PAE', 'y', 'kspp', 'self_protection')) if debug_mode or arch == 'ARM64': checklist.append(OptCheck('ARM64_SW_TTBR0_PAN', 'y', 'kspp', 'self_protection')) - checklist.append(OptCheck('RANDOMIZE_BASE', 'y', 'kspp', 'self_protection')) if debug_mode or arch == 'ARM64' or arch == 'ARM': checklist.append(OptCheck('SYN_COOKIES', 'y', 'kspp', 'self_protection')) # another reason? checklist.append(OptCheck('DEFAULT_MMAP_MIN_ADDR', '32768', 'kspp', 'self_protection')) @@ -263,7 +260,8 @@ def construct_checklist(checklist, arch): 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(OptCheck('INIT_ON_FREE_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) @@ -286,10 +284,6 @@ def construct_checklist(checklist, arch): checklist.append(OptCheck('SLUB_DEBUG_ON', 'y', 'my', 'self_protection')) checklist.append(OptCheck('RESET_ATTACK_MITIGATION', 'y', 'my', 'self_protection')) # needs userspace support (systemd) - checklist.append(AND(OptCheck('PAGE_POISONING_NO_SANITY', 'is not set', 'my', 'self_protection'), \ - page_poisoning_is_set)) - checklist.append(AND(OptCheck('PAGE_POISONING_ZERO', 'is not set', 'my', 'self_protection'), \ - page_poisoning_is_set)) if debug_mode or arch == 'X86_64': checklist.append(AND(OptCheck('AMD_IOMMU_V2', 'y', 'my', 'self_protection'), \ iommu_support_is_set)) @@ -302,11 +296,13 @@ def construct_checklist(checklist, arch): checklist.append(OptCheck('SECURITY', 'y', 'defconfig', 'security_policy')) # and choose your favourite LSM if debug_mode or arch == 'ARM': checklist.append(OptCheck('SECURITY', 'y', 'kspp', 'security_policy')) # and choose your favourite LSM + checklist.append(OptCheck('SECURITY_WRITABLE_HOOKS', 'is not set', 'defconfig', 'security_policy')) checklist.append(OptCheck('SECURITY_YAMA', 'y', 'kspp', 'security_policy')) checklist.append(OptCheck('SECURITY_LOADPIN', 'y', 'my', 'security_policy')) # needs userspace support checklist.append(OptCheck('SECURITY_LOCKDOWN_LSM', 'y', 'my', 'security_policy')) checklist.append(OptCheck('SECURITY_LOCKDOWN_LSM_EARLY', 'y', 'my', 'security_policy')) checklist.append(OptCheck('LOCK_DOWN_KERNEL_FORCE_CONFIDENTIALITY', 'y', 'my', 'security_policy')) + checklist.append(OptCheck('SECURITY_SAFESETID', 'y', 'my', 'security_policy')) checklist.append(OptCheck('SECCOMP', 'y', 'defconfig', 'cut_attack_surface')) checklist.append(OptCheck('SECCOMP_FILTER', 'y', 'defconfig', 'cut_attack_surface')) @@ -379,15 +375,16 @@ def construct_checklist(checklist, arch): 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('BPF_JIT', 'is not set', 'my', 'cut_attack_surface')) + checklist.append(OptCheck('VIDEO_VIVID', 'is not set', 'my', 'cut_attack_surface')) if debug_mode or arch == 'X86_32': checklist.append(OptCheck('MODIFY_LDT_SYSCALL', 'is not set', 'my', 'cut_attack_surface')) if debug_mode or arch == 'ARM64': - checklist.append(OptCheck('ARM64_PTR_AUTH', 'y', 'defconfig', 'userspace_protection')) + checklist.append(OptCheck('ARM64_PTR_AUTH', 'y', 'defconfig', 'userspace_hardening')) if debug_mode or arch == 'X86_64' or arch == 'ARM64': - checklist.append(OptCheck('ARCH_MMAP_RND_BITS', '32', 'clipos', 'userspace_protection')) + checklist.append(OptCheck('ARCH_MMAP_RND_BITS', '32', 'clipos', 'userspace_hardening')) if debug_mode or arch == 'X86_32' or arch == 'ARM': - checklist.append(OptCheck('ARCH_MMAP_RND_BITS', '16', 'my', 'userspace_protection')) + checklist.append(OptCheck('ARCH_MMAP_RND_BITS', '16', 'my', 'userspace_hardening')) # checklist.append(OptCheck('LKDTM', 'm', 'my', 'feature_test')) @@ -407,7 +404,7 @@ def print_checklist(checklist, with_results): print('{:^45}|{:^13}|{:^10}|{:^20}'.format('option name', 'desired val', 'decision', 'reason'), end='') sep_line_len = 91 if with_results: - print('||{:^28}'.format('check result'), end='') + print('| {}'.format('check result'), end='') sep_line_len += 30 print() @@ -416,7 +413,7 @@ def print_checklist(checklist, with_results): for opt in checklist: print('CONFIG_{:<38}|{:^13}|{:^10}|{:^20}'.format(opt.name, opt.expected, opt.decision, opt.reason), end='') if with_results: - print('||{:^28}'.format(opt.result), end='') + print('| {}'.format(opt.result), end='') print() print()