Some of my recommendations are used by CLIP OS, change the `reason` field

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

diff --git a/kconfig-hardened-check.py b/kconfig-hardened-check.py
index 5fcabf9f7428386892633861abae8620e97acf62..873506adc953ff4a4e5d1901566a46eace598cec 100755 (executable)
--- a/kconfig-hardened-check.py
+++ b/kconfig-hardened-check.py
@@ -28,7 +28,6 @@
 #           l1tf=full,force
 #           mds=full,nosmt
 #       ARM64:
-#           ? CONFIG_HARDEN_BRANCH_PREDICTOR
 #           kpti=on
 #           ssbd=force-on
 #
@@ -37,8 +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 +196,8 @@ def construct_checklist(checklist, arch):
         checklist.append(OptCheck('SYN_COOKIES',                 'y', 'defconfig', 'self_protection')) # another reason?
     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':
@@ -201,6 +207,7 @@ def construct_checklist(checklist, arch):
         checklist.append(OptCheck('CPU_SW_DOMAIN_PAN',           'y', 'defconfig', 'self_protection'))
     if debug_mode or arch == 'ARM64' or arch == 'ARM':
         checklist.append(OptCheck('REFCOUNT_FULL',               'y', 'defconfig', 'self_protection'))
+        checklist.append(OptCheck('HARDEN_BRANCH_PREDICTOR',     'y', 'defconfig', 'self_protection'))
 
     checklist.append(OptCheck('BUG_ON_DATA_CORRUPTION',           'y', 'kspp', 'self_protection'))
     checklist.append(OptCheck('DEBUG_WX',                         'y', 'kspp', 'self_protection'))
@@ -244,7 +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)
@@ -270,10 +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))
@@ -290,10 +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'))
@@ -352,7 +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'))