Alexander Popov [Thu, 2 May 2024 11:52:27 +0000 (14:52 +0300)]
Fix the reason and decision of the BPF_JIT check
KSPP doesn't recommend to disable it.
Refers to #125
Alexander Popov [Thu, 2 May 2024 10:30:42 +0000 (13:30 +0300)]
Restore the `dev.tty.legacy_tiocsti` check
The kernel documentations says:
```
Historically the kernel has allowed TIOCSTI, which will push
characters into a controlling TTY. This continues to be used
as a malicious privilege escalation mechanism, and provides no
meaningful real-world utility any more. Its use is considered
a dangerous legacy operation, and can be disabled on most
systems.
```
https://elixir.bootlin.com/linux/v6.8.8/source/drivers/tty/Kconfig#L152
In other words, not having the `dev.tty.legacy_tiocsti` sysctl means that
the dangerous functionality is enabled by default.
Alexander Popov [Thu, 2 May 2024 09:32:58 +0000 (12:32 +0300)]
Use CONFIG_LOCALVERSION instead of CONFIG_DEFAULT_INIT since it's older
Eneas U de Queiroz [Mon, 8 Apr 2024 21:09:56 +0000 (18:09 -0300)]
skip kernel.modules_disabled if MODULES not set
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
Eneas U de Queiroz [Fri, 10 Nov 2023 18:21:19 +0000 (15:21 -0300)]
Skip unprivileged_userfaultfd if USERFAULTFD unset
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
Eneas U de Queiroz [Fri, 10 Nov 2023 18:02:57 +0000 (15:02 -0300)]
Don't fail if dev.tty.legacy_tiocsti not found
The sysctl is available for Kernel 6.2 and later only.
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
Eneas U de Queiroz [Wed, 6 Sep 2023 17:20:53 +0000 (14:20 -0300)]
Skip unprivileged_bpf_disabled if BPF_SYSCALL not set
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
Eneas U de Queiroz [Wed, 6 Sep 2023 17:20:53 +0000 (14:20 -0300)]
Skip kexec_load_disabled if KEXEC_CORE is not set
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
Eneas U de Queiroz [Wed, 6 Sep 2023 17:20:53 +0000 (14:20 -0300)]
Skip bpf_jit_harden sysctl if BPF_JIT is not set
Also, switch the test for root sysctl to the 'kernel.cad_pid' symbol.
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
Alexander Popov [Tue, 30 Apr 2024 16:53:56 +0000 (19:53 +0300)]
Merge branch 'cpu_depend'
Thanks, @cotequeiroz.
Refers to #123
Alexander Popov [Tue, 30 Apr 2024 08:02:32 +0000 (11:02 +0300)]
Fix the reason and decision for CPU_SUP_INTEL
Alexander Popov [Tue, 30 Apr 2024 07:59:34 +0000 (10:59 +0300)]
Style fixes
Eneas U de Queiroz [Wed, 6 Sep 2023 13:30:27 +0000 (10:30 -0300)]
Skip CPU-dependent checks if CPU is not supported
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
Alexander Popov [Sun, 21 Apr 2024 22:39:17 +0000 (01:39 +0300)]
Like grep, colorize the output only if stdout is connected to a terminal
Nice.
With this, if you redirect the output of kernel-hardening-checker to a file,
it doesn't contain the ANSI escape sequences for colorizing.
Alexander Popov [Sun, 21 Apr 2024 00:12:20 +0000 (03:12 +0300)]
Don't use the `type` name for the class methods
There should be no functional changes
Alexander Popov [Thu, 18 Apr 2024 06:27:38 +0000 (09:27 +0300)]
Add the BLK_DEV_WRITE_MOUNTED/bdev_allow_write_mounted check
And fix the check order by the way.
Thanks to @izh1979 for the idea
Alexander Popov [Wed, 17 Apr 2024 17:47:09 +0000 (20:47 +0300)]
CI: codecov-action@v3.1.5 with token doesn't work well, go to v4 (facepalm)
Alexander Popov [Wed, 17 Apr 2024 17:32:59 +0000 (20:32 +0300)]
CI: Return to codecov-action@v3.1.5, but with tokens
codecov-action@v4 is unstable and sometimes gives the error:
```
Codecov: Failed to properly create commit: The process '/home/runner/work/_actions/codecov/codecov-action/v4/dist/codecov' failed with exit code 1
```
Alexander Popov [Wed, 17 Apr 2024 17:30:02 +0000 (20:30 +0300)]
CI: Update python versions
Alexander Popov [Wed, 17 Apr 2024 17:08:30 +0000 (20:08 +0300)]
Add the links to the corresponding codecov pages in the README badges
Alexander Popov [Wed, 17 Apr 2024 16:58:53 +0000 (19:58 +0300)]
CI: Move to codecov-action@4
Again, trying to fix the error
```
Codecov: Failed to properly upload: The process '/home/runner/work/_actions/codecov/codecov-action/v3/dist/codecov' failed with exit code 255
```
https://github.com/codecov/codecov-action/issues/598
Alexander Popov [Wed, 17 Apr 2024 16:46:41 +0000 (19:46 +0300)]
CI: Move to codecov-action@v3.1.5
Trying to fix the error
```
Codecov: Failed to properly upload: The process '/home/runner/work/_actions/codecov/codecov-action/v3/dist/codecov' failed with exit code 255
```
https://github.com/codecov/codecov-action/issues/598
Alexander Popov [Wed, 17 Apr 2024 16:27:42 +0000 (19:27 +0300)]
Merge branch 'shstk'
Refers to #114, #120
Thanks, @jvoisin.
Alexander Popov [Wed, 17 Apr 2024 16:12:12 +0000 (19:12 +0300)]
Fix 'decision' for the X86_USER_SHADOW_STACK check
Refers to #114, #120
jvoisin [Mon, 15 Apr 2024 12:05:42 +0000 (14:05 +0200)]
Add a check for X86_USER_SHADOW_STACK
This should close #114
Alexander Popov [Sat, 30 Mar 2024 11:36:34 +0000 (14:36 +0300)]
Add a comment that 'user.max_user_namespaces=0' may break the upower daemon
Alexander Popov [Mon, 25 Mar 2024 19:16:38 +0000 (22:16 +0300)]
Update the README
Alexander Popov [Mon, 25 Mar 2024 18:23:04 +0000 (21:23 +0300)]
Improve the CONFIG_CFI_CLANG checks (add the CONFIG_CC_IS_CLANG dependency)
Refers to #102
Alexander Popov [Mon, 25 Mar 2024 17:40:15 +0000 (20:40 +0300)]
Drop the GCC_PLUGINS check (checking CC_IS_GCC is enough)
Refers to #102
Alexander Popov [Mon, 25 Mar 2024 16:15:23 +0000 (19:15 +0300)]
Add the CONFIG_CC_IS_GCC dependency for gcc plugins
Refers to #102
Alexander Popov [Mon, 25 Mar 2024 07:18:25 +0000 (10:18 +0300)]
Don't require GCC_PLUGINS separately
It's auxiliary for building with gcc and it's not needed for building with
clang.
Refers to #102
Alexander Popov [Sun, 24 Mar 2024 12:52:40 +0000 (15:52 +0300)]
Rename the 'my' check decision to 'a13xp0p0v'
'my' checks look like the checks created by a user of the tool.
Let's fix that and take the responsibility :)
Refers to #50
Alexander Popov [Sun, 17 Mar 2024 22:38:54 +0000 (01:38 +0300)]
Make the table column names and JSON field names fit each other
Refers to #108, #115
Alexander Popov [Sun, 17 Mar 2024 22:16:51 +0000 (01:16 +0300)]
Merge remote-tracking branch 'krishjainx/improve-json-output'
Refers to #108, #115
krishjainx [Sun, 17 Mar 2024 21:43:01 +0000 (17:43 -0400)]
update
krishjainx [Sun, 17 Mar 2024 07:20:27 +0000 (03:20 -0400)]
fix issues
krishjainx [Thu, 14 Mar 2024 10:21:54 +0000 (06:21 -0400)]
Fix tests to work with new JSON schema
krishjainx [Thu, 14 Mar 2024 09:53:19 +0000 (05:53 -0400)]
Improve JSON output format for enhanced processing
Alexander Popov [Mon, 11 Mar 2024 11:00:25 +0000 (14:00 +0300)]
Improve the DEBUG_CREDENTIALS check
Useful DEBUG_CREDENTIALS was dropped in v6.6.8
Refers to #97
Alexander Popov [Sun, 10 Mar 2024 00:00:24 +0000 (03:00 +0300)]
Fix the false result of the REFCOUNT_FULL check for kernels > v5.4.208
Refers to #88, #89
Alexander Popov [Sat, 9 Mar 2024 23:12:35 +0000 (02:12 +0300)]
Have to revert codecov back to v3
Details about the error:
https://github.com/codecov/codecov-action/issues/1292
Alexander Popov [Sat, 9 Mar 2024 22:29:52 +0000 (01:29 +0300)]
Update codecov-action
This fixes the error:
```
Node.js 16 actions are deprecated.
Please update the following actions to use Node.js 20.
```
Alexander Popov [Sat, 9 Mar 2024 22:22:46 +0000 (01:22 +0300)]
Adapt test_version() in the unittest
Refers to #88, #89, #97
Alexander Popov [Sat, 9 Mar 2024 20:46:51 +0000 (23:46 +0300)]
Check all 3 numbers of the kernel version in VersionCheck
Refers to #88, #89, #97
Alexander Popov [Sat, 9 Mar 2024 21:41:49 +0000 (00:41 +0300)]
Fix the fresh set_state() bug found by unittest
This function should write 'self.state' anyway.
Refers to #88, #89, #97
Alexander Popov [Sat, 9 Mar 2024 21:38:25 +0000 (00:38 +0300)]
Make `python -m unittest` show the whole output
Alexander Popov [Sat, 9 Mar 2024 21:26:12 +0000 (00:26 +0300)]
Update github actions
This fixes the error:
```
Node.js 16 actions are deprecated.
Please update the following actions to use Node.js 20.
```
Alexander Popov [Sat, 9 Mar 2024 18:53:47 +0000 (21:53 +0300)]
Implement the set_state() method of the check classes
Refers to #88, #89, #97
Alexander Popov [Sat, 9 Mar 2024 18:16:30 +0000 (21:16 +0300)]
Use 3 numbers in the VersionCheck constructor
Refers to #88, #89, #97
Alexander Popov [Sat, 9 Mar 2024 17:27:08 +0000 (20:27 +0300)]
Parse all numbers of the kernel version
Refers to #88, #89, #97
Alexander Popov [Sat, 9 Mar 2024 17:24:07 +0000 (20:24 +0300)]
Skip the kernel version part after '-'
Example:
# Linux/x86_64 6.7.4-200.fc39.x86_64 Kernel Configuration
Refers to #88, #89, #97
Alexander Popov [Mon, 4 Mar 2024 20:00:49 +0000 (23:00 +0300)]
Add the ia32_emulation check
Refers to #87 #112
Alexander Popov [Mon, 19 Feb 2024 12:25:09 +0000 (15:25 +0300)]
Add MODULE_SIG_SHA3_512 as a valid option
Refers to #107
Alexander Popov [Sat, 17 Feb 2024 20:33:33 +0000 (23:33 +0300)]
Make LOCKDOWN_LSM 'self_protection', not 'security_policy'
Alexander Popov [Tue, 16 Jan 2024 22:55:02 +0000 (01:55 +0300)]
Ready for the release 0.6.6
Alexander Popov [Tue, 16 Jan 2024 22:54:40 +0000 (01:54 +0300)]
Update issues.md
Alexander Popov [Tue, 16 Jan 2024 22:30:43 +0000 (01:30 +0300)]
Update the README
Alexander Popov [Tue, 16 Jan 2024 22:20:39 +0000 (01:20 +0300)]
Update the Ubuntu example configs
Alexander Popov [Tue, 16 Jan 2024 21:42:56 +0000 (00:42 +0300)]
Don't print the warning about ARCH_MMAP_RND_BITS in the json mode
Alexander Popov [Tue, 16 Jan 2024 20:53:14 +0000 (23:53 +0300)]
Improve the check of DEBUG_NOTIFIERS feature (part 2)
CFI_PERMISSIVE should be disabled. Reacting with a kernel warning
is not enough.
Thanks to @thestinger for the idea.
Refers to #99.
Alexander Popov [Tue, 16 Jan 2024 20:31:11 +0000 (23:31 +0300)]
Improve the check of DEBUG_NOTIFIERS feature
This is what DEBUG_NOTIFIERS performs (see kernel/notifier.c):
```
#ifdef CONFIG_DEBUG_NOTIFIERS
if (unlikely(!func_ptr_is_kernel_text(nb->notifier_call))) {
WARN(1, "Invalid notifier called!");
nb = next_nb;
continue;
}
#endif
```
CFI can do the same better.
Thanks to @thestinger for the idea.
Refers to #99.
Alexander Popov [Tue, 16 Jan 2024 19:57:47 +0000 (22:57 +0300)]
Improve the check of SCHED_STACK_END_CHECK.
SCHED_STACK_END_CHECK checks the magic value at the end
of the kernel thread stack, and VMAP_STACK adds guard pages near it.
So they do a bit different things, but VMAP_STACK is more reliable.
Thanks to @thestinger for the idea.
Refers to #98.
Alexander Popov [Tue, 16 Jan 2024 17:33:58 +0000 (20:33 +0300)]
Fix style (III)
Use f-strings.
Alexander Popov [Tue, 16 Jan 2024 17:21:57 +0000 (20:21 +0300)]
Fix style (II)
Alexander Popov [Tue, 16 Jan 2024 17:20:41 +0000 (20:20 +0300)]
Fix style (I)
Alexander Popov [Tue, 16 Jan 2024 08:30:39 +0000 (11:30 +0300)]
Disable pylint too-many-locals, it's not useful for add_kconfig_checks()
Alexander Popov [Tue, 16 Jan 2024 08:26:27 +0000 (11:26 +0300)]
Fix pylint W0613: Unused argument 'arch'
Alexander Popov [Tue, 16 Jan 2024 04:24:32 +0000 (07:24 +0300)]
Fix pylint E1101: Instance of 'OptCheck' has no 'type' member
Alexander Popov [Tue, 16 Jan 2024 04:18:40 +0000 (07:18 +0300)]
Fix pylint W0613: Unused argument 'mode'
Alexander Popov [Mon, 15 Jan 2024 05:35:28 +0000 (08:35 +0300)]
Update the NixOS configs
Alexander Popov [Sun, 14 Jan 2024 14:31:50 +0000 (17:31 +0300)]
Don't add options without explicitly recommended values to Kconfig fragments
That's important for the '--generate' mode.
Alexander Popov [Sun, 14 Jan 2024 12:43:08 +0000 (15:43 +0300)]
UBSAN_SANITIZE_ALL is now available for ARM
Alexander Popov [Sat, 30 Dec 2023 20:44:34 +0000 (23:44 +0300)]
Fix the order in the vdso32 check (part II)
Alexander Popov [Sat, 30 Dec 2023 20:41:01 +0000 (23:41 +0300)]
Fix the order in the vdso32 check
Alexander Popov [Sat, 30 Dec 2023 18:30:14 +0000 (21:30 +0300)]
Improve the hackish refinement of the CONFIG_ARCH_MMAP_RND_BITS check
Don't check CONFIG_ARCH_MMAP_RND_BITS if CONFIG_ARCH_MMAP_RND_BITS_MAX
was not found.
Alexander Popov [Sat, 30 Dec 2023 18:22:00 +0000 (21:22 +0300)]
Show the option type in print_unknown_options()
That improves debugging.
Alexander Popov [Sat, 30 Dec 2023 18:15:37 +0000 (21:15 +0300)]
Use raw strings for regular expression
Alexander Popov [Sat, 30 Dec 2023 16:52:01 +0000 (19:52 +0300)]
Fix the 'decision' for the 'AIO' check
Alexander Popov [Fri, 29 Dec 2023 08:22:06 +0000 (11:22 +0300)]
Fix the 'decision' for the 'vdso32' check
Alexander Popov [Fri, 29 Dec 2023 08:21:17 +0000 (11:21 +0300)]
Improve the comment for the 'slab_common.usercopy_fallback' check
Alexander Popov [Thu, 28 Dec 2023 13:20:47 +0000 (16:20 +0300)]
Fix the arch condition for the SCHED_CORE check (III)
SCHED_CORE is finally available for ARM64 and ARM.
SCHED_SMT was needed for that.
Alexander Popov [Thu, 28 Dec 2023 12:30:56 +0000 (15:30 +0300)]
Update the KSPP recommendations
Alexander Popov [Thu, 28 Dec 2023 11:58:11 +0000 (14:58 +0300)]
Fix the arch for the CPU_SRSO check (it's available only for x86_64)
Alexander Popov [Thu, 28 Dec 2023 11:41:09 +0000 (14:41 +0300)]
Split the HW_RANDOM_TPM check (it's enabled by default on ARM and ARM64)
Alexander Popov [Thu, 28 Dec 2023 11:33:10 +0000 (14:33 +0300)]
Change the 'decision' of the INIT_STACK_ALL_ZERO check
Alexander Popov [Sun, 17 Dec 2023 23:51:58 +0000 (02:51 +0300)]
Add defconfigs for Linux v6.6
Alexander Popov [Sat, 16 Dec 2023 23:41:40 +0000 (02:41 +0300)]
Add the RANDOM_KMALLOC_CACHES check
Refers to #83
Alexander Popov [Sat, 16 Dec 2023 23:11:53 +0000 (02:11 +0300)]
Add the SECURITY_SELINUX_DEBUG check
Alexander Popov [Sat, 16 Dec 2023 22:53:50 +0000 (01:53 +0300)]
Fix the 'decision' for the LEGACY_TIOCSTI check
Alexander Popov [Sat, 16 Dec 2023 21:21:10 +0000 (00:21 +0300)]
Add the CONFIG_LIST_HARDENED check
Alexander Popov [Sat, 9 Dec 2023 19:25:38 +0000 (22:25 +0300)]
Add the gather_data_sampling check
Alexander Popov [Sat, 9 Dec 2023 19:10:32 +0000 (22:10 +0300)]
Add the CPU_SRSO check
Alexander Popov [Sat, 9 Dec 2023 19:06:13 +0000 (22:06 +0300)]
Add the SPECULATION_MITIGATIONS check
Alexander Popov [Sat, 9 Dec 2023 18:57:13 +0000 (21:57 +0300)]
Add the spec_rstack_overflow check
Alexander Popov [Sat, 9 Dec 2023 05:47:55 +0000 (08:47 +0300)]
Add the MODULE_FORCE_LOAD check
Thanks to @vobst for the idea
Alexander Popov [Sat, 2 Dec 2023 19:21:13 +0000 (22:21 +0300)]
Update the README
Alexander Popov [Sat, 2 Dec 2023 17:46:14 +0000 (20:46 +0300)]
Add the check for dis_ucode_ldr
Thanks to @izh1979 for the idea
Alexander Popov [Sat, 2 Dec 2023 17:33:56 +0000 (20:33 +0300)]
Add the MICROCODE_INTEL and MICROCODE_AMD checks
Thanks to @izh1979 for the idea
Alexander Popov [Sat, 2 Dec 2023 10:49:42 +0000 (13:49 +0300)]
Add a check for the 'kfence.sample_interval' boot parameter
Thanks to @izh1979 for the idea
Alexander Popov [Sat, 2 Dec 2023 10:04:30 +0000 (13:04 +0300)]
Add the KFENCE_SAMPLE_INTERVAL check
Thanks to @izh1979 for the idea