X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=kconfig-hardened-check.py;h=4c53b15c31ffde81eac373a0e15b495f08ee80f1;hb=e18ade0645ad4cca683281323d3469ea2bb89fa7;hp=f39995deb4a449f674680301324feede187b9f69;hpb=d9aca2d28e9f95266bca2da09625d7d2c885a6b2;p=kconfig-hardened-check.git

diff --git a/kconfig-hardened-check.py b/kconfig-hardened-check.py
index f39995d..4c53b15 100755
--- a/kconfig-hardened-check.py
+++ b/kconfig-hardened-check.py
@@ -18,14 +18,23 @@
 #    kernel.kptr_restrict=1
 #    lockdown=1
 #
-#    spectre_v2=on
-#    pti=on
-#    spec_store_bypass_disable=on
-#    l1tf=full,force
-#
+#    Mitigations of CPU vulnerabilities:
+#       Аrch-independent:
+#           mitigations=auto,nosmt
+#       X86:
+#           spectre_v2=on
+#           pti=on
+#           spec_store_bypass_disable=on
+#           l1tf=full,force
+#           mds=full,nosmt
+#       ARM64:
+#           ? CONFIG_HARDEN_BRANCH_PREDICTOR
+#           kpti=on
+#           ssbd=force-on
 #
 # N.B. Hardening sysctl's:
 #    net.core.bpf_jit_harden
+#    kptr_restrict=2
 
 import sys
 from argparse import ArgumentParser
@@ -231,7 +240,12 @@ def construct_checklist(arch):
         checklist.append(OptCheck('DEFAULT_MMAP_MIN_ADDR',        '32768', 'kspp', 'self_protection'))
 
     if debug_mode or arch == 'X86_64' or arch == 'ARM64' or arch == 'X86_32':
-        checklist.append(OptCheck('GCC_PLUGIN_STACKLEAK',         'y', 'my', 'self_protection'))
+        stackleak_is_set = OptCheck('GCC_PLUGIN_STACKLEAK',       'y', 'my', 'self_protection')
+        checklist.append(stackleak_is_set)
+        checklist.append(AND(OptCheck('STACKLEAK_METRICS',        'is not set', 'my', 'self_protection'), \
+                             stackleak_is_set))
+        checklist.append(AND(OptCheck('STACKLEAK_RUNTIME_DISABLE','is not set', 'my', 'self_protection'), \
+                             stackleak_is_set))
     checklist.append(OptCheck('LOCK_DOWN_KERNEL',                 'y', 'my', 'self_protection')) # remember about LOCK_DOWN_MANDATORY
     checklist.append(OptCheck('SLUB_DEBUG_ON',                    'y', 'my', 'self_protection'))
     checklist.append(OptCheck('SECURITY_DMESG_RESTRICT',          'y', 'my', 'self_protection'))
@@ -245,13 +259,14 @@ def construct_checklist(arch):
                          page_poisoning_is_set))
     if debug_mode or arch == 'X86_32':
         checklist.append(OptCheck('PAGE_TABLE_ISOLATION',         'y', 'my', 'self_protection'))
+    if debug_mode or arch == 'ARM':
+        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'))
+        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'))
+        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_SELINUX_DISABLE',    'is not set', 'kspp', 'security_policy'))
 
     checklist.append(OptCheck('SECCOMP',              'y', 'defconfig', 'cut_attack_surface'))
     checklist.append(OptCheck('SECCOMP_FILTER',       'y', 'defconfig', 'cut_attack_surface'))
@@ -309,6 +324,12 @@ def construct_checklist(arch):
     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('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('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('MMIOTRACE',            'is not set', 'my', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL (permissive)
     checklist.append(OptCheck('KEXEC_FILE',           'is not set', 'my', 'cut_attack_surface')) # refers to LOCK_DOWN_KERNEL (permissive)
     checklist.append(OptCheck('LIVEPATCH',            'is not set', 'my', 'cut_attack_surface'))
@@ -320,6 +341,8 @@ def construct_checklist(arch):
     if debug_mode or arch == 'X86_32':
         checklist.append(OptCheck('MODIFY_LDT_SYSCALL', 'is not set', 'my', 'cut_attack_surface'))
 
+    if debug_mode or arch == 'ARM64':
+        checklist.append(OptCheck('ARM64_PTR_AUTH',       'y', 'defconfig', 'userspace_protection'))
     if debug_mode or arch == 'X86_64' or arch == 'ARM64':
         checklist.append(OptCheck('ARCH_MMAP_RND_BITS',   '32', 'my', 'userspace_protection'))
     if debug_mode or arch == 'X86_32' or arch == 'ARM':
@@ -330,21 +353,21 @@ def construct_checklist(arch):
 
 def print_checklist(arch):
     print('[+] Printing kernel hardening preferences for {}...'.format(arch))
-    print('  {:<39}|{:^13}|{:^10}|{:^20}'.format(
+    print('{:^40}|{:^13}|{:^10}|{:^20}'.format(
         'option name', 'desired val', 'decision', 'reason'))
-    print('  ' + '=' * 86)
+    print('=' * 87)
     for opt in checklist:
-        print('  CONFIG_{:<32}|{:^13}|{:^10}|{:^20}'.format(
+        print('CONFIG_{:<33}|{:^13}|{:^10}|{:^20}'.format(
             opt.name, opt.expected, opt.decision, opt.reason))
     print()
 
 
 def print_check_results():
-    print('  {:<39}|{:^13}|{:^10}|{:^20}||{:^28}'.format(
+    print('{:^40}|{:^13}|{:^10}|{:^20}||{:^28}'.format(
         'option name', 'desired val', 'decision', 'reason', 'check result'))
-    print('  ' + '=' * 115)
+    print('=' * 116)
     for opt in checklist:
-        print('  CONFIG_{:<32}|{:^13}|{:^10}|{:^20}||{:^28}'.format(
+        print('CONFIG_{:<33}|{:^13}|{:^10}|{:^20}||{:^28}'.format(
             opt.name, opt.expected, opt.decision, opt.reason, opt.result))
     print()