Update the security policy checks adopted by KSPP

[kconfig-hardened-check.git] / kconfig_hardened_check / __init__.py

diff --git a/kconfig_hardened_check/__init__.py b/kconfig_hardened_check/__init__.py
index 0a1015cdab7759c9f6c91066f0d84fab5f4843ec..60930e37e2a3acaa8fd2d7e0d195288142e68502 100644 (file)
--- a/kconfig_hardened_check/__init__.py
+++ b/kconfig_hardened_check/__init__.py
@@ -12,7 +12,6 @@
 #
 # N.B Hardening command line parameters:
 #    iommu=force (does it help against DMA attacks?)
-#    loadpin.enforce=1
 #
 #    Mitigations of CPU vulnerabilities:
 #       Аrch-independent:
@@ -365,6 +364,9 @@ def add_kconfig_checks(l, arch):
     if arch in ('X86_64', 'ARM64'):
         l += [KconfigCheck('self_protection', 'defconfig', 'VMAP_STACK', 'y')]
     if arch in ('X86_64', 'X86_32'):
+        l += [KconfigCheck('self_protection', 'defconfig', 'X86_MCE', 'y')]
+        l += [KconfigCheck('self_protection', 'defconfig', 'X86_MCE_INTEL', 'y')]
+        l += [KconfigCheck('self_protection', 'defconfig', 'X86_MCE_AMD', 'y')]
         l += [KconfigCheck('self_protection', 'defconfig', 'MICROCODE', 'y')] # is needed for mitigating CPU bugs
         l += [KconfigCheck('self_protection', 'defconfig', 'RETPOLINE', 'y')]
         l += [OR(KconfigCheck('self_protection', 'defconfig', 'X86_SMAP', 'y'),
@@ -479,8 +481,12 @@ def add_kconfig_checks(l, arch):
     l += [OR(KconfigCheck('self_protection', 'clipos', 'EFI_DISABLE_PCI_DMA', 'y'),
              efi_not_set)]
     l += [KconfigCheck('self_protection', 'clipos', 'SLAB_MERGE_DEFAULT', 'is not set')]
-    l += [KconfigCheck('self_protection', 'clipos', 'RANDOM_TRUST_BOOTLOADER', 'is not set')]
-    l += [KconfigCheck('self_protection', 'clipos', 'RANDOM_TRUST_CPU', 'is not set')]
+    hw_random_tpm_is_set = KconfigCheck('self_protection', 'clipos', 'HW_RANDOM_TPM', 'y')
+    l += [hw_random_tpm_is_set]
+    l += [AND(KconfigCheck('self_protection', 'clipos', 'RANDOM_TRUST_BOOTLOADER', 'is not set'),
+              hw_random_tpm_is_set)]
+    l += [AND(KconfigCheck('self_protection', 'clipos', 'RANDOM_TRUST_CPU', 'is not set'),
+              hw_random_tpm_is_set)]
     l += [AND(KconfigCheck('self_protection', 'clipos', 'RANDSTRUCT_PERFORMANCE', 'is not set'),
               KconfigCheck('self_protection', 'clipos', 'GCC_PLUGIN_RANDSTRUCT_PERFORMANCE', 'is not set'),
               randstruct_is_set)]
@@ -527,15 +533,12 @@ def add_kconfig_checks(l, arch):
     l += [KconfigCheck('security_policy', 'kspp', 'SECURITY_YAMA', 'y')]
     l += [KconfigCheck('security_policy', 'kspp', 'SECURITY_LANDLOCK', 'y')]
     l += [KconfigCheck('security_policy', 'kspp', 'SECURITY_SELINUX_DISABLE', 'is not set')]
-    l += [KconfigCheck('security_policy', 'clipos', 'SECURITY_LOCKDOWN_LSM', 'y')]
-    l += [KconfigCheck('security_policy', 'clipos', 'SECURITY_LOCKDOWN_LSM_EARLY', 'y')]
-    l += [KconfigCheck('security_policy', 'clipos', 'LOCK_DOWN_KERNEL_FORCE_CONFIDENTIALITY', 'y')]
-    l += [KconfigCheck('security_policy', 'my', 'SECURITY_WRITABLE_HOOKS', 'is not set')] # refers to SECURITY_SELINUX_DISABLE
-    l += [KconfigCheck('security_policy', 'my', 'SECURITY_SAFESETID', 'y')]
-    loadpin_is_set = KconfigCheck('security_policy', 'my', 'SECURITY_LOADPIN', 'y')
-    l += [loadpin_is_set] # needs userspace support
-    l += [AND(KconfigCheck('security_policy', 'my', 'SECURITY_LOADPIN_ENFORCE', 'y'),
-              loadpin_is_set)]
+    l += [KconfigCheck('security_policy', 'kspp', 'SECURITY_SELINUX_BOOTPARAM', 'is not set')]
+    l += [KconfigCheck('security_policy', 'kspp', 'SECURITY_SELINUX_DEVELOP', 'is not set')]
+    l += [KconfigCheck('security_policy', 'kspp', 'SECURITY_LOCKDOWN_LSM', 'y')]
+    l += [KconfigCheck('security_policy', 'kspp', 'SECURITY_LOCKDOWN_LSM_EARLY', 'y')]
+    l += [KconfigCheck('security_policy', 'kspp', 'LOCK_DOWN_KERNEL_FORCE_CONFIDENTIALITY', 'y')]
+    l += [KconfigCheck('security_policy', 'kspp', 'SECURITY_WRITABLE_HOOKS', 'is not set')] # refers to SECURITY_SELINUX_DISABLE
 
     # 'cut_attack_surface', 'defconfig'
     l += [OR(KconfigCheck('cut_attack_surface', 'defconfig', 'BPF_UNPRIV_DEFAULT_OFF', 'y'),
@@ -637,6 +640,7 @@ def add_kconfig_checks(l, arch):
     l += [KconfigCheck('cut_attack_surface', 'clipos', 'X86_IOPL_IOPERM', 'is not set')] # refers to LOCKDOWN
     l += [KconfigCheck('cut_attack_surface', 'clipos', 'ACPI_TABLE_UPGRADE', 'is not set')] # refers to LOCKDOWN
     l += [KconfigCheck('cut_attack_surface', 'clipos', 'EFI_CUSTOM_SSDT_OVERLAYS', 'is not set')]
+    l += [KconfigCheck('cut_attack_surface', 'clipos', 'COREDUMP', 'is not set')] # cut userspace attack surface
     l += [AND(KconfigCheck('cut_attack_surface', 'clipos', 'LDISC_AUTOLOAD', 'is not set'),
               KconfigCheck('cut_attack_surface', 'clipos', 'LDISC_AUTOLOAD'))] # option presence check
     if arch in ('X86_64', 'X86_32'):
@@ -700,6 +704,7 @@ def add_cmdline_checks(l, arch):
     l += [CmdlineCheck('self_protection', 'defconfig', 'nosmep', 'is not set')]
     l += [CmdlineCheck('self_protection', 'defconfig', 'nosmap', 'is not set')]
     l += [CmdlineCheck('self_protection', 'defconfig', 'nokaslr', 'is not set')]
+    l += [CmdlineCheck('self_protection', 'defconfig', 'nopti', 'is not set')]
     l += [CmdlineCheck('self_protection', 'defconfig', 'nospectre_v1', 'is not set')]
     l += [CmdlineCheck('self_protection', 'defconfig', 'nospectre_v2', 'is not set')]
     if arch == 'ARM64':
@@ -736,18 +741,20 @@ def add_cmdline_checks(l, arch):
     l += [OR(CmdlineCheck('self_protection', 'kspp', 'slab_common.usercopy_fallback', '0'),
              AND(KconfigCheck('self_protection', 'kspp', 'HARDENED_USERCOPY_FALLBACK', 'is not set'),
                  CmdlineCheck('self_protection', 'kspp', 'slab_common.usercopy_fallback', 'is not set')))]
-    if arch in ('X86_64', 'X86_32'):
-        l += [AND(CmdlineCheck('self_protection', 'kspp', 'pti', 'on'),
-                  CmdlineCheck('self_protection', 'kspp', 'nopti', 'is not set'))] # ... the end
+    # ... the end
     if arch in ('X86_64', 'ARM64', 'X86_32'):
         l += [OR(CmdlineCheck('self_protection', 'kspp', 'randomize_kstack_offset', '1'),
                  AND(KconfigCheck('self_protection', 'kspp', 'RANDOMIZE_KSTACK_OFFSET_DEFAULT', 'y'),
                      CmdlineCheck('self_protection', 'kspp', 'randomize_kstack_offset', 'is not set')))]
+    if arch in ('X86_64', 'X86_32'):
+        l += [AND(CmdlineCheck('self_protection', 'kspp', 'pti', 'on'),
+                  CmdlineCheck('self_protection', 'defconfig', 'nopti', 'is not set'))]
 
     # 'self_protection', 'clipos'
     l += [CmdlineCheck('self_protection', 'clipos', 'page_alloc.shuffle', '1')]
     if arch in ('X86_64', 'X86_32'):
-        l += [CmdlineCheck('self_protection', 'clipos', 'spectre_v2', 'on')]
+        l += [AND(CmdlineCheck('self_protection', 'clipos', 'spectre_v2', 'on'),
+                  CmdlineCheck('self_protection', 'defconfig', 'nospectre_v2', 'is not set'))]
 
     # 'cut_attack_surface', 'kspp'
     if arch == 'X86_64':