JSON output about kernel-hardening-checker

[a13xp0p0v]

Hello @Wenzel and @nettrino,

@adrianopol has added the JSON output feature (#21), please check the --json argument.

[a13xp0p0v]

Hello @Wenzel

I would like tot integrate your project into a Python script which would check the security settings automatically and provide a report.

Nice!

Would it be possible to have an easily parsable JSON output ?
Otherwise processing with your data will be very difficult, if you are not human.

It sounds reasonable. I'll have a look in my free time.
If you already know how to implement it, the pull request is welcome!

[adrianopol]

Fixed. Thanks.

[Wenzel]

Hi @a13xp0p0v , @adrianopol ,

I would like to reopen this issue because I just tested the --json flag, and the output produced is not valid JSON.

piping in jq

Output example for ./kconfig-hardened-check.py -c /boot/config-5.1.12-300.fc30.x86_64 --json

[['CONFIG_BUG', 'y', 'defconfig', 'self_protection', 'OK'], ['CONFIG_STRICT_KERNEL_RWX', 'y', 'defconfig', 'self_protection', 'OK'], ['CONFIG_STACKPROTECTOR_STRONG', 'y', 'defconfig', 'self_protection', 'OK'], ['CONFIG_SLUB_DEBUG', 'y', 'defconfig', 'self_protection', 'OK'], ['CONFIG_STRICT_MODULE_RWX', 'y', 'defconfig', 'self_protection', 'OK'], ['CONFIG_PAGE_TABLE_ISOLATION', 'y', 'defconfig', 'self_protection', 'OK'], ['CONFIG_RANDOMIZE_MEMORY', 'y', 'defconfig', 'self_protection', 'OK'], ['CONFIG_RANDOMIZE_BASE', 'y', 'defconfig', 'self_protection', 'OK'], ['CONFIG_RETPOLINE', 'y', 'defconfig', 'self_protection', 'OK'], ['CONFIG_X86_SMAP', 'y', 'defconfig', 'self_protection', 'OK'], ['CONFIG_X86_INTEL_UMIP', 'y', 'defconfig', 'self_protection', 'OK'], ['CONFIG_SYN_COOKIES', 'y', 'defconfig', 'self_protection', 'OK'], ['CONFIG_VMAP_STACK', 'y', 'defconfig', 'self_protection', 'OK'], ['CONFIG_THREAD_INFO_IN_TASK', 'y', 'defconfig', 'self_protection', 'OK'], ['CONFIG_BUG_ON_DATA_CORRUPTION', 'y', 'kspp', 'self_protection', 'OK'], ['CONFIG_DEBUG_WX', 'y', 'kspp', 'self_protection', 'OK'], ['CONFIG_SCHED_STACK_END_CHECK', 'y', 'kspp', 'self_protection', 'FAIL: "is not set"'], ['CONFIG_SLAB_FREELIST_HARDENED', 'y', 'kspp', 'self_protection', 'OK'], ['CONFIG_SLAB_FREELIST_RANDOM', 'y', 'kspp', 'self_protection', 'OK'], ['CONFIG_FORTIFY_SOURCE', 'y', 'kspp', 'self_protection', 'OK'], ['CONFIG_GCC_PLUGINS', 'y', 'kspp', 'self_protection', 'FAIL: not found'], ['CONFIG_GCC_PLUGIN_RANDSTRUCT', 'y', 'kspp', 'self_protection', 'FAIL: not found'], ['CONFIG_GCC_PLUGIN_STRUCTLEAK', 'y', 'kspp', 'self_protection', 'FAIL: not found'], ['CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL', 'y', 'kspp', 'self_protection', 'FAIL: not found'], ['CONFIG_GCC_PLUGIN_LATENT_ENTROPY', 'y', 'kspp', 'self_protection', 'FAIL: not found'], ['CONFIG_DEBUG_LIST', 'y', 'kspp', 'self_protection', 'OK'], ['CONFIG_DEBUG_SG', 'y', 'kspp', 'self_protection', 'FAIL: "is not set"'], ['CONFIG_DEBUG_CREDENTIALS', 'y', 'kspp', 'self_protection', 'FAIL: "is not set"'], ['CONFIG_DEBUG_NOTIFIERS', 'y', 'kspp', 'self_protection', 'FAIL: "is not set"'], ['CONFIG_PAGE_POISONING', 'y', 'kspp', 'self_protection', 'FAIL: "is not set"'], ['CONFIG_HARDENED_USERCOPY', 'y', 'kspp', 'self_protection', 'OK'], ['CONFIG_HARDENED_USERCOPY_FALLBACK', 'is not set', 'kspp', 'self_protection', 'FAIL: "y"'], ['CONFIG_MODULE_SIG', 'y', 'kspp', 'self_protection', 'OK'], ['CONFIG_MODULE_SIG_ALL', 'y', 'kspp', 'self_protection', 'OK'], ['CONFIG_MODULE_SIG_SHA512', 'y', 'kspp', 'self_protection', 'FAIL: "is not set"'], ['CONFIG_MODULE_SIG_FORCE', 'y', 'kspp', 'self_protection', 'FAIL: "is not set"'], ['CONFIG_DEFAULT_MMAP_MIN_ADDR', '65536', 'kspp', 'self_protection', 'OK'], ['CONFIG_REFCOUNT_FULL', 'y', 'kspp', 'self_protection', 'FAIL: "is not set"'], ['CONFIG_LOCK_DOWN_KERNEL', 'y', 'clipos', 'self_protection', 'OK'], ['CONFIG_SECURITY_DMESG_RESTRICT', 'y', 'clipos', 'self_protection', 'FAIL: "is not set"'], ['CONFIG_DEBUG_VIRTUAL', 'y', 'clipos', 'self_protection', 'FAIL: "is not set"'], ['CONFIG_STATIC_USERMODEHELPER', 'y', 'clipos', 'self_protection', 'FAIL: "is not set"'], ['CONFIG_SLAB_MERGE_DEFAULT', 'is not set', 'clipos', 'self_protection', 'FAIL: "y"'], ['CONFIG_GCC_PLUGIN_RANDSTRUCT_PERFORMANCE', 'is not set', 'clipos', 'self_protection', 'FAIL: CONFIG_GCC_PLUGIN_RANDSTRUCT is needed'], ['CONFIG_GCC_PLUGIN_STACKLEAK', 'y', 'clipos', 'self_protection', 'FAIL: not found'], ['CONFIG_STACKLEAK_METRICS', 'is not set', 'clipos', 'self_protection', 'FAIL: CONFIG_GCC_PLUGIN_STACKLEAK is needed'], ['CONFIG_STACKLEAK_RUNTIME_DISABLE', 'is not set', 'clipos', 'self_protection', 'FAIL: CONFIG_GCC_PLUGIN_STACKLEAK is needed'], ['CONFIG_RANDOM_TRUST_CPU', 'is not set', 'clipos', 'self_protection', 'FAIL: "y"'], ['CONFIG_MICROCODE', 'y', 'clipos', 'self_protection', 'OK'], ['CONFIG_IOMMU_SUPPORT', 'y', 'clipos', 'self_protection', 'OK'], ['CONFIG_INTEL_IOMMU', 'y', 'clipos', 'self_protection', 'OK'], ['CONFIG_INTEL_IOMMU_SVM', 'y', 'clipos', 'self_protection', 'OK'], ['CONFIG_INTEL_IOMMU_DEFAULT_ON', '
y', 'clipos', 'self_protection', 'FAIL: "is not set"'], ['CONFIG_AMD_IOMMU', 'y', 'my', 'self_protection', 'OK'], ['CONFIG_AMD_IOMMU_V2', 'y', 'my', 'self_protection', 'FAIL: "m"'], ['CONFIG_SLUB_DEBUG_ON', 'y', 'my', 'self_protection', 'FAIL: "is not set"'], ['CONFIG_SECURITY_LOADPIN', 'y', 'my', 'self_protection', 'FAIL: "is not set"'], ['CONFIG_RESET_ATTACK_MITIGATION', 'y', 'my', 'self_protection', 'FAIL: "is not set"'], ['CONFIG_PAGE_POISONING_NO_SANITY', 'is not set', 'my', 'self_protection', 'FAIL: CONFIG_PAGE_POISONING is needed'], ['CONFIG_PAGE_POISONING_ZERO', 'is not set', 'my', 'self_protection', 'FAIL: CONFIG_PAGE_POISONING is needed'], ['CONFIG_SECURITY', 'y', 'defconfig', 'security_policy', 'OK'], ['CONFIG_SECURITY_YAMA', 'y', 'kspp', 'security_policy', 'OK'], ['CONFIG_SECCOMP', 'y', 'defconfig', 'cut_attack_surface', 'OK'], ['CONFIG_SECCOMP_FILTER', 'y', 'defconfig', 'cut_attack_surface', 'OK'], ['CONFIG_STRICT_DEVMEM', 'y', 'defconfig', 'cut_attack_surface', 'OK'], ['CONFIG_MODULES', 'is not set', 'kspp', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_DEVMEM', 'is not set', 'kspp', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_IO_STRICT_DEVMEM', 'y', 'kspp', 'cut_attack_surface', 'OK'], ['CONFIG_ACPI_CUSTOM_METHOD', 'is not set', 'kspp', 'cut_attack_surface', 'FAIL: "m"'], ['CONFIG_COMPAT_BRK', 'is not set', 'kspp', 'cut_attack_surface', 'OK'], ['CONFIG_DEVKMEM', 'is not set', 'kspp', 'cut_attack_surface', 'OK'], ['CONFIG_COMPAT_VDSO', 'is not set', 'kspp', 'cut_attack_surface', 'OK'], ['CONFIG_BINFMT_MISC', 'is not set', 'kspp', 'cut_attack_surface', 'FAIL: "m"'], ['CONFIG_INET_DIAG', 'is not set', 'kspp', 'cut_attack_surface', 'FAIL: "m"'], ['CONFIG_KEXEC', 'is not set', 'kspp', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_PROC_KCORE', 'is not set', 'kspp', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_LEGACY_PTYS', 'is not set', 'kspp', 'cut_attack_surface', 'OK'], ['CONFIG_HIBERNATION', 'is not set', 'kspp', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_LEGACY_VSYSCALL_NONE', 'y', 'kspp', 'cut_attack_surface', 'FAIL: "is not set"'], ['CONFIG_IA32_EMULATION', 'is not set', 'kspp', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_X86_X32', 'is not set', 'kspp', 'cut_attack_surface', 'OK'], ['CONFIG_MODIFY_LDT_SYSCALL', 'is not set', 'kspp', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_X86_PTDUMP', 'is not set', 'grsecurity', 'cut_attack_surface', 'OK'], ['CONFIG_ZSMALLOC_STAT', 'is not set', 'grsecurity', 'cut_attack_surface', 'OK'], ['CONFIG_PAGE_OWNER', 'is not set', 'grsecurity', 'cut_attack_surface', 'OK'], ['CONFIG_DEBUG_KMEMLEAK', 'is not set', 'grsecurity', 'cut_attack_surface', 'OK'], ['CONFIG_BINFMT_AOUT', 'is not set', 'grsecurity', 'cut_attack_surface', 'OK: not found'], ['CONFIG_KPROBES', 'is not set', 'grsecurity', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_UPROBES', 'is not set', 'grsecurity', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_GENERIC_TRACER', 'is not set', 'grsecurity', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_PROC_VMCORE', 'is not set', 'grsecurity', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_PROC_PAGE_MONITOR', 'is not set', 'grsecurity', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_USELIB', 'is not set', 'grsecurity', 'cut_attack_surface', 'OK'], ['CONFIG_CHECKPOINT_RESTORE', 'is not set', 'grsecurity', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_USERFAULTFD', 'is not set', 'grsecurity', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_HWPOISON_INJECT', 'is not set', 'grsecurity', 'cut_attack_surface', 'FAIL: "m"'], ['CONFIG_MEM_SOFT_DIRTY', 'is not set', 'grsecurity', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_DEVPORT', 'is not set', 'grsecurity', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_DEBUG_FS', 'is not set', 'grsecurity', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_NOTIFIER_ERROR_INJECTION', 'is not set', 'grsecurity', 'cut_attack_surface', 'OK'], ['CONFIG_ACPI_TABLE_UPGRADE', 'is not set', 'lockdown', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_ACPI_APEI_EINJ', 'is not set', 'lockdown', 'cut_attack_surface', 'FAIL: "m"'], ['CONFIG_PROFILING', 'is not set', '
lockdown', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_BPF_SYSCALL', 'is not set', 'lockdown', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_MMIOTRACE_TEST', 'is not set', 'lockdown', 'cut_attack_surface', 'OK'], ['CONFIG_KSM', 'is not set', 'clipos', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_IKCONFIG', 'is not set', 'clipos', 'cut_attack_surface', 'OK'], ['CONFIG_KALLSYMS', 'is not set', 'clipos', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_X86_VSYSCALL_EMULATION', 'is not set', 'clipos', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_MAGIC_SYSRQ', 'is not set', 'clipos', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_KEXEC_FILE', 'is not set', 'clipos', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_USER_NS', 'is not set', 'clipos', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_LDISC_AUTOLOAD', 'is not set', 'clipos', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_MMIOTRACE', 'is not set', 'my', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_LIVEPATCH', 'is not set', 'my', 'cut_attack_surface', 'OK'], ['CONFIG_IP_DCCP', 'is not set', 'my', 'cut_attack_surface', 'OK'], ['CONFIG_IP_SCTP', 'is not set', 'my', 'cut_attack_surface', 'FAIL: "m"'], ['CONFIG_FTRACE', 'is not set', 'my', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_BPF_JIT', 'is not set', 'my', 'cut_attack_surface', 'FAIL: "y"'], ['CONFIG_ARCH_MMAP_RND_BITS', '32', 'clipos', 'userspace_protection', 'FAIL: "28"']]

Could you rework the PR and check the JSON output ?
I think it might be a trivial fix, like double quotes instead of simple quotes:

Thanks !

[Wenzel]

It should be more robust to use json.dump(obj) or json.dumps(string) instead of printing your own JSON.
https://github.com/a13xp0p0v/kconfig-hardened-check/blob/master/kconfig-hardened-check.py#L377

[a13xp0p0v]

@Wenzel, thanks for the report.
@adrianopol, thanks for the fix, merged.
Double-checked it in json validator, now it should be fine.