X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=kconfig-hardened-check.py;h=90e61e70056a81b9e8287bf176049eb7af86d789;hb=4de80103b72ee3d7842b032c5513ab1aee5b6129;hp=5a384d0cdfa7b80a853dbb716c9fad6f087eb9d7;hpb=c8652fc952a31d6778ca0a781c4faaaf422008c5;p=kconfig-hardened-check.git diff --git a/kconfig-hardened-check.py b/kconfig-hardened-check.py index 5a384d0..90e61e7 100755 --- a/kconfig-hardened-check.py +++ b/kconfig-hardened-check.py @@ -36,8 +36,13 @@ # kptr_restrict=2 # vm.unprivileged_userfaultfd=0 # kernel.perf_event_paranoid=3 -# kernel.yama.ptrace_scope=1 +# kernel.yama.ptrace_scope=1 (or even 3?) # kernel.unprivileged_bpf_disabled=1 +# fs.suid_dumpable=0 +# fs.protected_symlinks = 1 +# fs.protected_hardlinks = 1 +# fs.protected_fifos = 2 +# fs.protected_regular = 2 import sys from argparse import ArgumentParser @@ -192,6 +197,7 @@ def construct_checklist(checklist, arch): if debug_mode or arch == 'ARM64': checklist.append(OptCheck('UNMAP_KERNEL_AT_EL0', 'y', 'defconfig', 'self_protection')) checklist.append(OptCheck('HARDEN_EL2_VECTORS', 'y', 'defconfig', 'self_protection')) + checklist.append(OptCheck('RODATA_FULL_DEFAULT_ENABLED', 'y', 'defconfig', 'self_protection')) 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': @@ -245,7 +251,10 @@ 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(OptCheck('LOCK_DOWN_KERNEL', 'y', 'clipos', 'self_protection')) # remember about LOCK_DOWN_MANDATORY + 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(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) @@ -271,10 +280,7 @@ def construct_checklist(checklist, arch): checklist.append(AND(OptCheck('INTEL_IOMMU_DEFAULT_ON', 'y', 'clipos', 'self_protection'), \ iommu_support_is_set)) - checklist.append(OR(OptCheck('INIT_STACK_ALL', 'y', 'my', 'self_protection'), \ - OptCheck('GCC_PLUGIN_STRUCTLEAK_BYREF_ALL', 'y', 'kspp', 'self_protection'))) checklist.append(OptCheck('SLUB_DEBUG_ON', 'y', 'my', 'self_protection')) - checklist.append(OptCheck('SECURITY_LOADPIN', 'y', 'my', 'self_protection')) # needs userspace support 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)) @@ -291,10 +297,14 @@ def construct_checklist(checklist, arch): checklist.append(OptCheck('STACKPROTECTOR_PER_TASK', 'y', 'my', 'self_protection')) if debug_mode or arch == 'X86_64' or arch == 'ARM64' or arch == 'X86_32': - checklist.append(OptCheck('SECURITY', 'y', 'defconfig', 'security_policy')) # and choose your favourite LSM + 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_YAMA', 'y', 'kspp', 'security_policy')) + checklist.append(OptCheck('SECURITY', 'y', 'kspp', 'security_policy')) # and choose your favourite LSM + 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('SECCOMP', 'y', 'defconfig', 'cut_attack_surface')) checklist.append(OptCheck('SECCOMP_FILTER', 'y', 'defconfig', 'cut_attack_surface')) @@ -353,7 +363,7 @@ def construct_checklist(checklist, arch): checklist.append(OptCheck('MMIOTRACE_TEST', 'is not set', 'lockdown', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL checklist.append(OptCheck('KSM', 'is not set', 'clipos', 'cut_attack_surface')) # to prevent FLUSH+RELOAD attack - checklist.append(OptCheck('IKCONFIG', 'is not set', 'clipos', 'cut_attack_surface')) +# checklist.append(OptCheck('IKCONFIG', 'is not set', 'clipos', 'cut_attack_surface')) # no, this info is needed for this check :) checklist.append(OptCheck('KALLSYMS', 'is not set', 'clipos', 'cut_attack_surface')) checklist.append(OptCheck('X86_VSYSCALL_EMULATION', 'is not set', 'clipos', 'cut_attack_surface')) checklist.append(OptCheck('MAGIC_SYSRQ', 'is not set', 'clipos', 'cut_attack_surface')) @@ -392,8 +402,8 @@ def print_checklist(checklist, with_results): return # header - print('{:^40}|{:^13}|{:^10}|{:^20}'.format('option name', 'desired val', 'decision', 'reason'), end='') - sep_line_len = 86 + 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='') sep_line_len += 30 @@ -402,7 +412,7 @@ def print_checklist(checklist, with_results): print('=' * sep_line_len) for opt in checklist: - print('CONFIG_{:<33}|{:^13}|{:^10}|{:^20}'.format(opt.name, opt.expected, opt.decision, opt.reason), end='') + 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()