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fact-depend
kernel-hardening-checker
Commits
34682dee
Commit
34682dee
authored
6 years ago
by
Alexander Popov
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Plain Diff
Go through all the checks in debug mode
parent
f510cdfe
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1 changed file
with
13 additions
and
11 deletions
+13
-11
kconfig-hardened-check.py
kconfig-hardened-check.py
+13
-11
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kconfig-hardened-check.py
View file @
34682dee
...
...
@@ -145,16 +145,16 @@ def construct_checklist(arch):
checklist
.
append
(
OR
(
OptCheck
(
'STRICT_MODULE_RWX'
,
'y'
,
'defconfig'
,
'self_protection'
),
\
OptCheck
(
'DEBUG_SET_MODULE_RONX'
,
'y'
,
'defconfig'
,
'self_protection'
),
\
modules_not_set
))
# DEBUG_SET_MODULE_RONX was before v4.11
if
arch
==
'X86_64'
:
if
debug_mode
or
arch
==
'X86_64'
:
checklist
.
append
(
OptCheck
(
'PAGE_TABLE_ISOLATION'
,
'y'
,
'defconfig'
,
'self_protection'
))
checklist
.
append
(
OptCheck
(
'RANDOMIZE_MEMORY'
,
'y'
,
'defconfig'
,
'self_protection'
))
if
arch
==
'X86_64'
or
arch
==
'X86_32'
:
if
debug_mode
or
arch
==
'X86_64'
or
arch
==
'X86_32'
:
checklist
.
append
(
OptCheck
(
'RANDOMIZE_BASE'
,
'y'
,
'defconfig'
,
'self_protection'
))
checklist
.
append
(
OptCheck
(
'RETPOLINE'
,
'y'
,
'defconfig'
,
'self_protection'
))
checklist
.
append
(
OptCheck
(
'X86_SMAP'
,
'y'
,
'defconfig'
,
'self_protection'
))
checklist
.
append
(
OptCheck
(
'X86_INTEL_UMIP'
,
'y'
,
'defconfig'
,
'self_protection'
))
checklist
.
append
(
OptCheck
(
'SYN_COOKIES'
,
'y'
,
'defconfig'
,
'self_protection'
))
# another reason?
if
arch
==
'ARM64'
:
if
debug_mode
or
arch
==
'ARM64'
:
checklist
.
append
(
OptCheck
(
'UNMAP_KERNEL_AT_EL0'
,
'y'
,
'defconfig'
,
'self_protection'
))
checklist
.
append
(
OptCheck
(
'REFCOUNT_FULL'
,
'y'
,
'defconfig'
,
'self_protection'
))
if
debug_mode
or
arch
==
'X86_64'
or
arch
==
'ARM64'
:
...
...
@@ -185,13 +185,13 @@ def construct_checklist(arch):
checklist
.
append
(
OR
(
OptCheck
(
'MODULE_SIG_SHA512'
,
'y'
,
'kspp'
,
'self_protection'
),
\
modules_not_set
))
checklist
.
append
(
OptCheck
(
'MODULE_SIG_FORCE'
,
'y'
,
'kspp'
,
'self_protection'
))
# refers to LOCK_DOWN_KERNEL
if
arch
==
'X86_64'
or
arch
==
'X86_32'
:
if
debug_mode
or
arch
==
'X86_64'
or
arch
==
'X86_32'
:
checklist
.
append
(
OptCheck
(
'DEFAULT_MMAP_MIN_ADDR'
,
'65536'
,
'kspp'
,
'self_protection'
))
checklist
.
append
(
OptCheck
(
'REFCOUNT_FULL'
,
'y'
,
'kspp'
,
'self_protection'
))
if
arch
==
'X86_32'
:
if
debug_mode
or
arch
==
'X86_32'
:
checklist
.
append
(
OptCheck
(
'HIGHMEM64G'
,
'y'
,
'kspp'
,
'self_protection'
))
checklist
.
append
(
OptCheck
(
'X86_PAE'
,
'y'
,
'kspp'
,
'self_protection'
))
if
arch
==
'ARM64'
:
if
debug_mode
or
arch
==
'ARM64'
:
checklist
.
append
(
OptCheck
(
'DEFAULT_MMAP_MIN_ADDR'
,
'32768'
,
'kspp'
,
'self_protection'
))
checklist
.
append
(
OptCheck
(
'ARM64_SW_TTBR0_PAN'
,
'y'
,
'kspp'
,
'self_protection'
))
checklist
.
append
(
OptCheck
(
'RANDOMIZE_BASE'
,
'y'
,
'kspp'
,
'self_protection'
))
...
...
@@ -206,7 +206,7 @@ def construct_checklist(arch):
checklist
.
append
(
OptCheck
(
'PAGE_POISONING_NO_SANITY'
,
'is not set'
,
'my'
,
'self_protection'
))
checklist
.
append
(
OptCheck
(
'PAGE_POISONING_ZERO'
,
'is not set'
,
'my'
,
'self_protection'
))
checklist
.
append
(
OptCheck
(
'SLAB_MERGE_DEFAULT'
,
'is not set'
,
'my'
,
'self_protection'
))
# slab_nomerge
if
arch
==
'X86_32'
:
if
debug_mode
or
arch
==
'X86_32'
:
checklist
.
append
(
OptCheck
(
'PAGE_TABLE_ISOLATION'
,
'y'
,
'my'
,
'self_protection'
))
checklist
.
append
(
OptCheck
(
'SECURITY'
,
'y'
,
'defconfig'
,
'security_policy'
))
...
...
@@ -230,7 +230,7 @@ def construct_checklist(arch):
checklist
.
append
(
OptCheck
(
'PROC_KCORE'
,
'is not set'
,
'kspp'
,
'cut_attack_surface'
))
# refers to LOCK_DOWN_KERNEL
checklist
.
append
(
OptCheck
(
'LEGACY_PTYS'
,
'is not set'
,
'kspp'
,
'cut_attack_surface'
))
checklist
.
append
(
OptCheck
(
'HIBERNATION'
,
'is not set'
,
'kspp'
,
'cut_attack_surface'
))
# refers to LOCK_DOWN_KERNEL
if
arch
==
'X86_64'
:
if
debug_mode
or
arch
==
'X86_64'
:
checklist
.
append
(
OptCheck
(
'LEGACY_VSYSCALL_NONE'
,
'y'
,
'kspp'
,
'cut_attack_surface'
))
# 'vsyscall=none'
checklist
.
append
(
OptCheck
(
'IA32_EMULATION'
,
'is not set'
,
'kspp'
,
'cut_attack_surface'
))
checklist
.
append
(
OptCheck
(
'X86_X32'
,
'is not set'
,
'kspp'
,
'cut_attack_surface'
))
...
...
@@ -269,12 +269,12 @@ def construct_checklist(arch):
checklist
.
append
(
OptCheck
(
'IP_SCTP'
,
'is not set'
,
'my'
,
'cut_attack_surface'
))
checklist
.
append
(
OptCheck
(
'FTRACE'
,
'is not set'
,
'my'
,
'cut_attack_surface'
))
checklist
.
append
(
OptCheck
(
'BPF_JIT'
,
'is not set'
,
'my'
,
'cut_attack_surface'
))
if
arch
==
'X86_32'
:
if
debug_mode
or
arch
==
'X86_32'
:
checklist
.
append
(
OptCheck
(
'MODIFY_LDT_SYSCALL'
,
'is not set'
,
'my'
,
'cut_attack_surface'
))
if
arch
==
'X86_64'
or
arch
==
'ARM64'
:
if
debug_mode
or
arch
==
'X86_64'
or
arch
==
'ARM64'
:
checklist
.
append
(
OptCheck
(
'ARCH_MMAP_RND_BITS'
,
'32'
,
'my'
,
'userspace_protection'
))
if
arch
==
'X86_32'
:
if
debug_mode
or
arch
==
'X86_32'
:
checklist
.
append
(
OptCheck
(
'ARCH_MMAP_RND_BITS'
,
'16'
,
'my'
,
'userspace_protection'
))
# checklist.append(OptCheck('LKDTM', 'm', 'my', 'feature_test'))
...
...
@@ -374,6 +374,8 @@ if __name__ == '__main__':
construct_checklist
(
arch
)
check_config_file
(
args
.
config
)
error_count
=
len
(
list
(
filter
(
lambda
opt
:
opt
.
result
.
startswith
(
'FAIL'
),
checklist
)))
if
debug_mode
:
sys
.
exit
(
0
)
if
error_count
==
0
:
print
(
'[+] config check is PASSED'
)
sys
.
exit
(
0
)
...
...
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