X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=kconfig-hardened-check.py;h=6056f6221b9a9d37f7c3a373788d98bd67a2e2db;hb=0e4ee10bbfe1158a30eb88095fbb58fae39ce23d;hp=55e46a34f05a4922c7084b0e71a5256c1fd43775;hpb=f4f3414d16171ac1acbe20bb55a77001b60c16ef;p=kconfig-hardened-check.git diff --git a/kconfig-hardened-check.py b/kconfig-hardened-check.py index 55e46a3..6056f62 100755 --- a/kconfig-hardened-check.py +++ b/kconfig-hardened-check.py @@ -14,7 +14,6 @@ # 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) @@ -225,7 +224,7 @@ def detect_version(fname): def construct_checklist(checklist, arch): modules_not_set = OptCheck('MODULES', 'is not set', 'kspp', 'cut_attack_surface') - devmem_not_set = OptCheck('DEVMEM', 'is not set', 'kspp', 'cut_attack_surface') # refers to LOCK_DOWN_KERNEL + devmem_not_set = OptCheck('DEVMEM', 'is not set', 'kspp', 'cut_attack_surface') # refers to LOCKDOWN checklist.append(OptCheck('BUG', 'y', 'defconfig', 'self_protection')) checklist.append(OR(OptCheck('STRICT_KERNEL_RWX', 'y', 'defconfig', 'self_protection'), \ @@ -237,16 +236,16 @@ 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'), \ + checklist.append(OR(OptCheck('REFCOUNT_FULL', 'y', 'defconfig', 'self_protection'), \ VerCheck((5, 5)))) # REFCOUNT_FULL is enabled by default since v5.5 + iommu_support_is_set = OptCheck('IOMMU_SUPPORT', 'y', 'defconfig', 'self_protection') # is needed for mitigating DMA attacks + checklist.append(iommu_support_is_set) if 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')) checklist.append(OptCheck('X86_SMAP', 'y', 'defconfig', 'self_protection')) checklist.append(OR(OptCheck('X86_UMIP', 'y', 'defconfig', 'self_protection'), \ OptCheck('X86_INTEL_UMIP', 'y', 'defconfig', 'self_protection'))) - iommu_support_is_set = OptCheck('IOMMU_SUPPORT', 'y', 'defconfig', 'self_protection') # is needed for mitigating DMA attacks - checklist.append(iommu_support_is_set) checklist.append(OptCheck('SYN_COOKIES', 'y', 'defconfig', 'self_protection')) # another reason? if arch == 'X86_64': checklist.append(OptCheck('PAGE_TABLE_ISOLATION', 'y', 'defconfig', 'self_protection')) @@ -265,7 +264,6 @@ def construct_checklist(checklist, arch): checklist.append(OptCheck('RANDOMIZE_BASE', 'y', 'defconfig', 'self_protection')) checklist.append(OptCheck('THREAD_INFO_IN_TASK', 'y', 'defconfig', 'self_protection')) if arch == 'ARM': - checklist.append(OptCheck('VMSPLIT_3G', 'y', 'defconfig', 'self_protection')) checklist.append(OptCheck('CPU_SW_DOMAIN_PAN', 'y', 'defconfig', 'self_protection')) checklist.append(OptCheck('STACKPROTECTOR_PER_TASK', 'y', 'defconfig', 'self_protection')) if arch == 'ARM64' or arch == 'ARM': @@ -296,7 +294,7 @@ def construct_checklist(checklist, arch): checklist.append(OR(OptCheck('MODULE_SIG_SHA512', 'y', 'kspp', 'self_protection'), \ modules_not_set)) checklist.append(OR(OptCheck('MODULE_SIG_FORCE', 'y', 'kspp', 'self_protection'), \ - modules_not_set)) # refers to LOCK_DOWN_KERNEL + modules_not_set)) # refers to LOCKDOWN 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')) @@ -326,13 +324,16 @@ def construct_checklist(checklist, arch): 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)) - checklist.append(OptCheck('CONFIG_RANDOM_TRUST_BOOTLOADER', 'is not set', 'clipos', 'self_protection')) + checklist.append(OptCheck('RANDOM_TRUST_BOOTLOADER', 'is not set', 'clipos', 'self_protection')) + checklist.append(OptCheck('RANDOM_TRUST_CPU', 'is not set', 'clipos', 'self_protection')) if 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'), \ iommu_support_is_set)) checklist.append(AND(OptCheck('INTEL_IOMMU_DEFAULT_ON', 'y', 'clipos', 'self_protection'), \ iommu_support_is_set)) + if arch == 'X86_32': + checklist.append(AND(OptCheck('INTEL_IOMMU', 'y', 'clipos', 'self_protection'), \ + iommu_support_is_set)) checklist.append(OptCheck('SLUB_DEBUG_ON', 'y', 'my', 'self_protection')) checklist.append(OptCheck('RESET_ATTACK_MITIGATION', 'y', 'my', 'self_protection')) # needs userspace support (systemd) @@ -347,55 +348,55 @@ def construct_checklist(checklist, arch): if 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(OR(OptCheck('SECURITY_WRITABLE_HOOKS', 'is not set', 'my', 'security_policy'), \ + OptCheck('SECURITY_SELINUX_DISABLE', 'is not set', 'kspp', 'security_policy'))) + checklist.append(OptCheck('SECURITY_LOCKDOWN_LSM', 'y', 'clipos', 'security_policy')) + checklist.append(OptCheck('SECURITY_LOCKDOWN_LSM_EARLY', 'y', 'clipos', 'security_policy')) + checklist.append(OptCheck('LOCK_DOWN_KERNEL_FORCE_CONFIDENTIALITY', 'y', 'clipos', 'security_policy')) loadpin_is_set = OptCheck('SECURITY_LOADPIN', 'y', 'my', 'security_policy') # needs userspace support checklist.append(loadpin_is_set) checklist.append(AND(OptCheck('SECURITY_LOADPIN_ENFORCE', 'y', 'my', 'security_policy'), \ loadpin_is_set)) - 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('SECURITY_WRITABLE_HOOKS', 'is not set', 'my', 'security_policy')) checklist.append(OptCheck('SECCOMP', 'y', 'defconfig', 'cut_attack_surface')) checklist.append(OptCheck('SECCOMP_FILTER', 'y', 'defconfig', 'cut_attack_surface')) if arch == 'X86_64' or arch == 'ARM64' or arch == 'X86_32': checklist.append(OR(OptCheck('STRICT_DEVMEM', 'y', 'defconfig', 'cut_attack_surface'), \ - devmem_not_set)) # refers to LOCK_DOWN_KERNEL + devmem_not_set)) # refers to LOCKDOWN checklist.append(modules_not_set) checklist.append(devmem_not_set) checklist.append(OR(OptCheck('IO_STRICT_DEVMEM', 'y', 'kspp', 'cut_attack_surface'), \ - devmem_not_set)) # refers to LOCK_DOWN_KERNEL + devmem_not_set)) # refers to LOCKDOWN if arch == 'ARM': checklist.append(OR(OptCheck('STRICT_DEVMEM', 'y', 'kspp', 'cut_attack_surface'), \ - devmem_not_set)) # refers to LOCK_DOWN_KERNEL - checklist.append(OptCheck('ACPI_CUSTOM_METHOD', 'is not set', 'kspp', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL + devmem_not_set)) # refers to LOCKDOWN + if arch == 'X86_64': + checklist.append(OptCheck('LEGACY_VSYSCALL_NONE', 'y', 'kspp', 'cut_attack_surface')) # 'vsyscall=none' + checklist.append(OptCheck('ACPI_CUSTOM_METHOD', 'is not set', 'kspp', 'cut_attack_surface')) # refers to LOCKDOWN checklist.append(OptCheck('COMPAT_BRK', 'is not set', 'kspp', 'cut_attack_surface')) - checklist.append(OptCheck('DEVKMEM', 'is not set', 'kspp', 'cut_attack_surface')) + checklist.append(OptCheck('DEVKMEM', 'is not set', 'kspp', 'cut_attack_surface')) # refers to LOCKDOWN checklist.append(OptCheck('COMPAT_VDSO', 'is not set', 'kspp', 'cut_attack_surface')) 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('KEXEC', 'is not set', 'kspp', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL - checklist.append(OptCheck('PROC_KCORE', 'is not set', 'kspp', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL + checklist.append(OptCheck('KEXEC', 'is not set', 'kspp', 'cut_attack_surface')) # refers to LOCKDOWN + checklist.append(OptCheck('PROC_KCORE', 'is not set', 'kspp', 'cut_attack_surface')) # refers to LOCKDOWN checklist.append(OptCheck('LEGACY_PTYS', 'is not set', 'kspp', 'cut_attack_surface')) - checklist.append(OptCheck('HIBERNATION', 'is not set', 'kspp', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL - if arch == 'X86_64': - checklist.append(OptCheck('LEGACY_VSYSCALL_NONE', 'y', 'kspp', 'cut_attack_surface')) # 'vsyscall=none' - checklist.append(OptCheck('IA32_EMULATION', 'is not set', 'kspp', 'cut_attack_surface')) - checklist.append(OptCheck('X86_X32', 'is not set', 'kspp', 'cut_attack_surface')) - checklist.append(OptCheck('MODIFY_LDT_SYSCALL', 'is not set', 'kspp', 'cut_attack_surface')) - if arch == 'ARM': - checklist.append(OptCheck('OABI_COMPAT', 'is not set', 'kspp', 'cut_attack_surface')) + checklist.append(OptCheck('HIBERNATION', 'is not set', 'kspp', 'cut_attack_surface')) # refers to LOCKDOWN + checklist.append(OptCheck('IA32_EMULATION', 'is not set', 'kspp', 'cut_attack_surface')) + checklist.append(OptCheck('X86_X32', 'is not set', 'kspp', 'cut_attack_surface')) + checklist.append(OptCheck('MODIFY_LDT_SYSCALL', 'is not set', 'kspp', 'cut_attack_surface')) + checklist.append(OptCheck('OABI_COMPAT', 'is not set', 'kspp', 'cut_attack_surface')) checklist.append(OptCheck('X86_PTDUMP', 'is not set', 'grsecurity', 'cut_attack_surface')) checklist.append(OptCheck('ZSMALLOC_STAT', 'is not set', 'grsecurity', 'cut_attack_surface')) checklist.append(OptCheck('PAGE_OWNER', 'is not set', 'grsecurity', 'cut_attack_surface')) checklist.append(OptCheck('DEBUG_KMEMLEAK', 'is not set', 'grsecurity', 'cut_attack_surface')) checklist.append(OptCheck('BINFMT_AOUT', 'is not set', 'grsecurity', 'cut_attack_surface')) - checklist.append(OptCheck('KPROBES', 'is not set', 'grsecurity', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL + checklist.append(OptCheck('KPROBES', 'is not set', 'grsecurity', 'cut_attack_surface')) # refers to LOCKDOWN checklist.append(OptCheck('UPROBES', 'is not set', 'grsecurity', 'cut_attack_surface')) - checklist.append(OptCheck('GENERIC_TRACER', 'is not set', 'grsecurity', 'cut_attack_surface')) + checklist.append(OptCheck('GENERIC_TRACER', 'is not set', 'grsecurity', 'cut_attack_surface')) # refers to LOCKDOWN checklist.append(OptCheck('PROC_VMCORE', 'is not set', 'grsecurity', 'cut_attack_surface')) checklist.append(OptCheck('PROC_PAGE_MONITOR', 'is not set', 'grsecurity', 'cut_attack_surface')) checklist.append(OptCheck('USELIB', 'is not set', 'grsecurity', 'cut_attack_surface')) @@ -403,15 +404,15 @@ def construct_checklist(checklist, arch): checklist.append(OptCheck('USERFAULTFD', 'is not set', 'grsecurity', 'cut_attack_surface')) checklist.append(OptCheck('HWPOISON_INJECT', 'is not set', 'grsecurity', 'cut_attack_surface')) checklist.append(OptCheck('MEM_SOFT_DIRTY', 'is not set', 'grsecurity', 'cut_attack_surface')) - checklist.append(OptCheck('DEVPORT', 'is not set', 'grsecurity', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL - checklist.append(OptCheck('DEBUG_FS', 'is not set', 'grsecurity', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL + checklist.append(OptCheck('DEVPORT', 'is not set', 'grsecurity', 'cut_attack_surface')) # refers to LOCKDOWN + checklist.append(OptCheck('DEBUG_FS', 'is not set', 'grsecurity', 'cut_attack_surface')) # refers to LOCKDOWN checklist.append(OptCheck('NOTIFIER_ERROR_INJECTION','is not set', 'grsecurity', 'cut_attack_surface')) - checklist.append(OptCheck('ACPI_TABLE_UPGRADE', 'is not set', 'lockdown', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL - checklist.append(OptCheck('ACPI_APEI_EINJ', 'is not set', 'lockdown', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL - checklist.append(OptCheck('PROFILING', 'is not set', 'lockdown', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL - checklist.append(OptCheck('BPF_SYSCALL', 'is not set', 'lockdown', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL - checklist.append(OptCheck('MMIOTRACE_TEST', 'is not set', 'lockdown', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL + checklist.append(OptCheck('ACPI_TABLE_UPGRADE', 'is not set', 'lockdown', 'cut_attack_surface')) # refers to LOCKDOWN + checklist.append(OptCheck('X86_IOPL_IOPERM', 'is not set', 'lockdown', 'cut_attack_surface')) # refers to LOCKDOWN + checklist.append(OptCheck('EFI_TEST', 'is not set', 'lockdown', 'cut_attack_surface')) # refers to LOCKDOWN + checklist.append(OptCheck('BPF_SYSCALL', 'is not set', 'lockdown', 'cut_attack_surface')) # refers to LOCKDOWN + checklist.append(OptCheck('MMIOTRACE_TEST', 'is not set', 'lockdown', 'cut_attack_surface')) # refers to LOCKDOWN checklist.append(OptCheck('STAGING', 'is not set', 'clipos', 'cut_attack_surface')) checklist.append(OptCheck('KSM', 'is not set', 'clipos', 'cut_attack_surface')) # to prevent FLUSH+RELOAD attack @@ -419,23 +420,26 @@ def construct_checklist(checklist, arch): 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')) - checklist.append(OptCheck('KEXEC_FILE', 'is not set', 'clipos', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL (permissive) + checklist.append(OptCheck('KEXEC_FILE', 'is not set', 'clipos', 'cut_attack_surface')) # refers to LOCKDOWN (permissive) checklist.append(OptCheck('USER_NS', 'is not set', 'clipos', 'cut_attack_surface')) # user.max_user_namespaces=0 + checklist.append(OptCheck('X86_MSR', 'is not set', 'clipos', 'cut_attack_surface')) # refers to LOCKDOWN + checklist.append(OptCheck('X86_CPUID', '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('MMIOTRACE', 'is not set', 'my', 'cut_attack_surface')) # refers to LOCKDOWN (permissive) checklist.append(OptCheck('LIVEPATCH', 'is not set', 'my', 'cut_attack_surface')) checklist.append(OptCheck('IP_DCCP', 'is not set', 'my', 'cut_attack_surface')) 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('FTRACE', 'is not set', 'my', 'cut_attack_surface')) # refers to LOCKDOWN 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 arch == 'X86_32': - checklist.append(OptCheck('MODIFY_LDT_SYSCALL', 'is not set', 'my', 'cut_attack_surface')) + checklist.append(OptCheck('INTEGRITY', 'y', 'defconfig', 'userspace_hardening')) if arch == 'ARM64': checklist.append(OptCheck('ARM64_PTR_AUTH', 'y', 'defconfig', 'userspace_hardening')) + if arch == 'ARM' or arch == 'X86_32': + checklist.append(OptCheck('VMSPLIT_3G', 'y', 'defconfig', 'userspace_hardening')) if arch == 'X86_64' or arch == 'ARM64': checklist.append(OptCheck('ARCH_MMAP_RND_BITS', '32', 'clipos', 'userspace_hardening')) if arch == 'X86_32' or arch == 'ARM':