X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=kconfig_hardened_check%2F__init__.py;h=5db3879e4f51d503972fe9d9e487963625fcaed1;hb=3974da7251acc9ddf98c7692eb1338cd5dc1a9ee;hp=cb794505bd7a597411d3356472925c0125215967;hpb=c1fc80cab0a55b90602ab8d03beefd723954820e;p=kconfig-hardened-check.git diff --git a/kconfig_hardened_check/__init__.py b/kconfig_hardened_check/__init__.py index cb79450..5db3879 100644 --- a/kconfig_hardened_check/__init__.py +++ b/kconfig_hardened_check/__init__.py @@ -178,9 +178,9 @@ class ComplexOptCheck: class OR(ComplexOptCheck): # self.opts[0] is the option that this OR-check is about. - # Use case: + # Use cases: # OR(, ) - # OR(, ) + # OR(, ) def check(self): if not self.opts: @@ -200,8 +200,10 @@ class OR(ComplexOptCheck): class AND(ComplexOptCheck): # self.opts[0] is the option that this AND-check is about. - # Use case: AND(, ) - # Suboption is not checked if checking of the main_option is failed. + # Use cases: + # AND(, ) + # Suboption is not checked if checking of the main_option is failed. + # AND(, ) def check(self): for i, opt in reversed(list(enumerate(self.opts))): @@ -211,7 +213,7 @@ class AND(ComplexOptCheck): return ret if not ret: if hasattr(opt, 'expected'): - self.result = 'FAIL: CONFIG_{} is needed'.format(opt.name) + self.result = 'FAIL: CONFIG_{} not "{}"'.format(opt.name, opt.expected) else: self.result = opt.result return False @@ -353,6 +355,7 @@ def construct_checklist(l, arch): l += [OptCheck('self_protection', 'clipos', 'SECURITY_DMESG_RESTRICT', 'y')] l += [OptCheck('self_protection', 'clipos', 'DEBUG_VIRTUAL', 'y')] l += [OptCheck('self_protection', 'clipos', 'STATIC_USERMODEHELPER', 'y')] # needs userspace support + l += [OptCheck('self_protection', 'clipos', 'EFI_DISABLE_PCI_DMA', 'y')] l += [OptCheck('self_protection', 'clipos', 'SLAB_MERGE_DEFAULT', 'is not set')] # slab_nomerge l += [OptCheck('self_protection', 'clipos', 'RANDOM_TRUST_BOOTLOADER', 'is not set')] l += [OptCheck('self_protection', 'clipos', 'RANDOM_TRUST_CPU', 'is not set')] @@ -429,7 +432,6 @@ def construct_checklist(l, arch): l += [OptCheck('cut_attack_surface', 'kspp', 'LEGACY_VSYSCALL_NONE', 'y')] # 'vsyscall=none' # 'cut_attack_surface', 'grsecurity' - l += [OptCheck('cut_attack_surface', 'grsecurity', 'X86_PTDUMP', 'is not set')] l += [OptCheck('cut_attack_surface', 'grsecurity', 'ZSMALLOC_STAT', 'is not set')] l += [OptCheck('cut_attack_surface', 'grsecurity', 'PAGE_OWNER', 'is not set')] l += [OptCheck('cut_attack_surface', 'grsecurity', 'DEBUG_KMEMLEAK', 'is not set')] @@ -447,18 +449,16 @@ def construct_checklist(l, arch): l += [OptCheck('cut_attack_surface', 'grsecurity', 'DEVPORT', 'is not set')] # refers to LOCKDOWN l += [OptCheck('cut_attack_surface', 'grsecurity', 'DEBUG_FS', 'is not set')] # refers to LOCKDOWN l += [OptCheck('cut_attack_surface', 'grsecurity', 'NOTIFIER_ERROR_INJECTION','is not set')] + l += [AND(OptCheck('cut_attack_surface', 'grsecurity', 'X86_PTDUMP', 'is not set'), + OptCheck('cut_attack_surface', 'my', 'PTDUMP_DEBUGFS', 'is not set'))] # 'cut_attack_surface', 'maintainer' l += [OptCheck('cut_attack_surface', 'maintainer', 'DRM_LEGACY', 'is not set')] l += [OptCheck('cut_attack_surface', 'maintainer', 'FB', 'is not set')] l += [OptCheck('cut_attack_surface', 'maintainer', 'VT', 'is not set')] - # 'cut_attack_surface', 'lockdown' - l += [OptCheck('cut_attack_surface', 'lockdown', 'ACPI_TABLE_UPGRADE', 'is not set')] # refers to LOCKDOWN - l += [OptCheck('cut_attack_surface', 'lockdown', 'X86_IOPL_IOPERM', 'is not set')] # refers to LOCKDOWN - l += [OptCheck('cut_attack_surface', 'lockdown', 'EFI_TEST', 'is not set')] # refers to LOCKDOWN - l += [OptCheck('cut_attack_surface', 'lockdown', 'BPF_SYSCALL', 'is not set')] # refers to LOCKDOWN - l += [OptCheck('cut_attack_surface', 'lockdown', 'MMIOTRACE_TEST', 'is not set')] # refers to LOCKDOWN + # 'cut_attack_surface', 'grapheneos' + l += [OptCheck('cut_attack_surface', 'grapheneos', 'AIO', 'is not set')] # 'cut_attack_surface', 'clipos' l += [OptCheck('cut_attack_surface', 'clipos', 'STAGING', 'is not set')] @@ -471,13 +471,18 @@ def construct_checklist(l, arch): l += [OptCheck('cut_attack_surface', 'clipos', 'USER_NS', 'is not set')] # user.max_user_namespaces=0 l += [OptCheck('cut_attack_surface', 'clipos', 'X86_MSR', 'is not set')] # refers to LOCKDOWN l += [OptCheck('cut_attack_surface', 'clipos', 'X86_CPUID', 'is not set')] + l += [OptCheck('cut_attack_surface', 'clipos', 'IO_URING', 'is not set')] + l += [OptCheck('cut_attack_surface', 'clipos', 'X86_IOPL_IOPERM', 'is not set')] # refers to LOCKDOWN l += [AND(OptCheck('cut_attack_surface', 'clipos', 'LDISC_AUTOLOAD', 'is not set'), PresenceCheck('LDISC_AUTOLOAD'))] if arch in ('X86_64', 'X86_32'): l += [OptCheck('cut_attack_surface', 'clipos', 'X86_INTEL_TSX_MODE_OFF', 'y')] # tsx=off - # 'cut_attack_surface', 'grapheneos' - l += [OptCheck('cut_attack_surface', 'grapheneos', 'AIO', 'is not set')] + # 'cut_attack_surface', 'lockdown' + l += [OptCheck('cut_attack_surface', 'lockdown', 'ACPI_TABLE_UPGRADE', 'is not set')] # refers to LOCKDOWN + l += [OptCheck('cut_attack_surface', 'lockdown', 'EFI_TEST', 'is not set')] # refers to LOCKDOWN + l += [OptCheck('cut_attack_surface', 'lockdown', 'BPF_SYSCALL', 'is not set')] # refers to LOCKDOWN + l += [OptCheck('cut_attack_surface', 'lockdown', 'MMIOTRACE_TEST', 'is not set')] # refers to LOCKDOWN # 'cut_attack_surface', 'my' l += [OptCheck('cut_attack_surface', 'my', 'MMIOTRACE', 'is not set')] # refers to LOCKDOWN (permissive) @@ -490,7 +495,10 @@ def construct_checklist(l, arch): l += [OptCheck('cut_attack_surface', 'my', 'INPUT_EVBUG', 'is not set')] # Can be used as a keylogger # 'userspace_hardening' - l += [OptCheck('userspace_hardening', 'defconfig', 'INTEGRITY', 'y')] + if arch in ('X86_64', 'ARM64', 'X86_32'): + l += [OptCheck('userspace_hardening', 'defconfig', 'INTEGRITY', 'y')] + if arch == 'ARM': + l += [OptCheck('userspace_hardening', 'my', 'INTEGRITY', 'y')] if arch in ('ARM', 'X86_32'): l += [OptCheck('userspace_hardening', 'defconfig', 'VMSPLIT_3G', 'y')] if arch in ('X86_64', 'ARM64'): @@ -539,6 +547,13 @@ def print_checklist(mode, checklist, with_results): # table contents for opt in checklist: + if with_results: + if mode == 'show_ok': + if not opt.result.startswith('OK'): + continue + if mode == 'show_fail': + if not opt.result.startswith('FAIL'): + continue opt.table_print(mode, with_results) print() if mode == 'verbose': @@ -547,10 +562,16 @@ def print_checklist(mode, checklist, with_results): # final score if with_results: - error_count = len(list(filter(lambda opt: opt.result.startswith('FAIL'), checklist))) + fail_count = len(list(filter(lambda opt: opt.result.startswith('FAIL'), checklist))) + fail_suppressed = '' ok_count = len(list(filter(lambda opt: opt.result.startswith('OK'), checklist))) + ok_suppressed = '' + if mode == 'show_ok': + fail_suppressed = ' (suppressed in output)' + if mode == 'show_fail': + ok_suppressed = ' (suppressed in output)' if mode != 'json': - print('[+] Config check is finished: \'OK\' - {} / \'FAIL\' - {}'.format(ok_count, error_count)) + print('[+] Config check is finished: \'OK\' - {}{} / \'FAIL\' - {}{}'.format(ok_count, ok_suppressed, fail_count, fail_suppressed)) def perform_checks(checklist, parsed_options, kernel_version): @@ -602,7 +623,7 @@ def main(): # - reporting about unknown kernel options in the config # - verbose printing of ComplexOptCheck items # * json mode for printing the results in JSON format - report_modes = ['verbose', 'json'] + report_modes = ['verbose', 'json', 'show_ok', 'show_fail'] supported_archs = ['X86_64', 'X86_32', 'ARM64', 'ARM'] parser = ArgumentParser(prog='kconfig-hardened-check', description='Checks the hardening options in the Linux kernel config') @@ -610,7 +631,7 @@ def main(): parser.add_argument('-p', '--print', choices=supported_archs, help='print hardening preferences for selected architecture') parser.add_argument('-c', '--config', - help='check the config_file against these preferences') + help='check the kernel config file against these preferences') parser.add_argument('-m', '--mode', choices=report_modes, help='choose the report mode') args = parser.parse_args() @@ -651,6 +672,8 @@ def main(): sys.exit(0) if args.print: + if mode in ('show_ok', 'show_fail'): + sys.exit('[!] ERROR: please use "{}" mode for checking the kernel config'.format(mode)) arch = args.print construct_checklist(config_checklist, arch) if mode != 'json':