peter/spectre-meltdown-checker
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feat(inception): start supporting AMD inception

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Sébastien Mériot 2023-08-11 17:21:01 +00:00 committed by Stéphane Lesimple
parent 44223c5308
commit 3167762cfd
1 changed files with 52 additions and 18 deletions
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70
spectre-meltdown-checker.sh
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@ -177,7 +177,7 @@ global_critical=0
global_unknown=0 global_unknown=0
nrpe_vuln='' nrpe_vuln=''
supported_cve_list='CVE-2017-5753 CVE-2017-5715 CVE-2017-5754 CVE-2018-3640 CVE-2018-3639 CVE-2018-3615 CVE-2018-3620 CVE-2018-3646 CVE-2018-12126 CVE-2018-12130 CVE-2018-12127 CVE-2019-11091 CVE-2019-11135 CVE-2018-12207 CVE-2020-0543 CVE-2023-20593 CVE-2022-40982' supported_cve_list='CVE-2017-5753 CVE-2017-5715 CVE-2017-5754 CVE-2018-3640 CVE-2018-3639 CVE-2018-3615 CVE-2018-3620 CVE-2018-3646 CVE-2018-12126 CVE-2018-12130 CVE-2018-12127 CVE-2019-11091 CVE-2019-11135 CVE-2018-12207 CVE-2020-0543 CVE-2023-20593 CVE-2022-40982 CVE-2023-20569'
# find a sane command to print colored messages, we prefer `printf` over `echo` # find a sane command to print colored messages, we prefer `printf` over `echo`
# because `printf` behavior is more standard across Linux/BSD # because `printf` behavior is more standard across Linux/BSD
@ -304,6 +304,7 @@ cve2name()
CVE-2020-0543) echo "Special Register Buffer Data Sampling (SRBDS)";; CVE-2020-0543) echo "Special Register Buffer Data Sampling (SRBDS)";;
CVE-2023-20593) echo "Zenbleed, cross-process information leak";; CVE-2023-20593) echo "Zenbleed, cross-process information leak";;
CVE-2022-40982) echo "Downfall, gather data sampling (GDS)";; CVE-2022-40982) echo "Downfall, gather data sampling (GDS)";;
CVE-2023-20569) echo "Inception, return address security (RAS)";;
*) echo "$0: error: invalid CVE '$1' passed to cve2name()" >&2; exit 255;; *) echo "$0: error: invalid CVE '$1' passed to cve2name()" >&2; exit 255;;
esac esac
} }
@ -330,6 +331,7 @@ _is_cpu_affected_cached()
CVE-2020-0543) return $variant_srbds;; CVE-2020-0543) return $variant_srbds;;
CVE-2023-20593) return $variant_zenbleed;; CVE-2023-20593) return $variant_zenbleed;;
CVE-2022-40982) return $variant_downfall;; CVE-2022-40982) return $variant_downfall;;
CVE-2023-20569) return $variant_inception;;
*) echo "$0: error: invalid variant '$1' passed to is_cpu_affected()" >&2; exit 255;; *) echo "$0: error: invalid variant '$1' passed to is_cpu_affected()" >&2; exit 255;;
esac esac
} }
@ -397,8 +399,9 @@ is_cpu_affected()
variant_taa='' variant_taa=''
variant_itlbmh='' variant_itlbmh=''
variant_srbds='' variant_srbds=''
# Zenbleed is AMD specific, look for "is_amd" below: # Zenbleed and Inception are both AMD specific, look for "is_amd" below:
variant_zenbleed=immune variant_zenbleed=immune
variant_inception=immune
# Downfall is Intel specific, look for "is_intel" below: # Downfall is Intel specific, look for "is_intel" below:
variant_downfall=immune variant_downfall=immune
@ -560,6 +563,12 @@ is_cpu_affected()
amd_legacy_erratum "$(amd_model_range 0x17 0x30 0x0 0x4f 0xf)" && variant_zenbleed=vuln amd_legacy_erratum "$(amd_model_range 0x17 0x30 0x0 0x4f 0xf)" && variant_zenbleed=vuln
amd_legacy_erratum "$(amd_model_range 0x17 0x60 0x0 0x7f 0xf)" && variant_zenbleed=vuln amd_legacy_erratum "$(amd_model_range 0x17 0x60 0x0 0x7f 0xf)" && variant_zenbleed=vuln
amd_legacy_erratum "$(amd_model_range 0x17 0xa0 0x0 0xaf 0xf)" && variant_zenbleed=vuln amd_legacy_erratum "$(amd_model_range 0x17 0xa0 0x0 0xaf 0xf)" && variant_zenbleed=vuln
# Inception (Zen3 & Zen4)
# TODO: Should Zend2 & Zen1 be added. No ucode update will be released but they are affected too.
amd_legacy_erratum "$(amd_model_range 0x19 0x40 0x0 0x7f 0xf)" && variant_inception=vuln
amd_legacy_erratum "$(amd_model_range 0x19 0x00 0x0 0x2f 0xf)" && variant_inception=vuln
elif [ "$cpu_vendor" = CAVIUM ]; then elif [ "$cpu_vendor" = CAVIUM ]; then
variant3=immune variant3=immune
variant3a=immune variant3a=immune
@ -702,21 +711,22 @@ is_cpu_affected()
fi fi
_debug "is_cpu_affected: temp results are <$variant1> <$variant2> <$variant3> <$variant3a> <$variant4> <$variantl1tf>" _debug "is_cpu_affected: temp results are <$variant1> <$variant2> <$variant3> <$variant3a> <$variant4> <$variantl1tf>"
[ "$variant1" = "immune" ] && variant1=1 || variant1=0 [ "$variant1" = "immune" ] && variant1=1 || variant1=0
[ "$variant2" = "immune" ] && variant2=1 || variant2=0 [ "$variant2" = "immune" ] && variant2=1 || variant2=0
[ "$variant3" = "immune" ] && variant3=1 || variant3=0 [ "$variant3" = "immune" ] && variant3=1 || variant3=0
[ "$variant3a" = "immune" ] && variant3a=1 || variant3a=0 [ "$variant3a" = "immune" ] && variant3a=1 || variant3a=0
[ "$variant4" = "immune" ] && variant4=1 || variant4=0 [ "$variant4" = "immune" ] && variant4=1 || variant4=0
[ "$variantl1tf" = "immune" ] && variantl1tf=1 || variantl1tf=0 [ "$variantl1tf" = "immune" ] && variantl1tf=1 || variantl1tf=0
[ "$variant_msbds" = "immune" ] && variant_msbds=1 || variant_msbds=0 [ "$variant_msbds" = "immune" ] && variant_msbds=1 || variant_msbds=0
[ "$variant_mfbds" = "immune" ] && variant_mfbds=1 || variant_mfbds=0 [ "$variant_mfbds" = "immune" ] && variant_mfbds=1 || variant_mfbds=0
[ "$variant_mlpds" = "immune" ] && variant_mlpds=1 || variant_mlpds=0 [ "$variant_mlpds" = "immune" ] && variant_mlpds=1 || variant_mlpds=0
[ "$variant_mdsum" = "immune" ] && variant_mdsum=1 || variant_mdsum=0 [ "$variant_mdsum" = "immune" ] && variant_mdsum=1 || variant_mdsum=0
[ "$variant_taa" = "immune" ] && variant_taa=1 || variant_taa=0 [ "$variant_taa" = "immune" ] && variant_taa=1 || variant_taa=0
[ "$variant_itlbmh" = "immune" ] && variant_itlbmh=1 || variant_itlbmh=0 [ "$variant_itlbmh" = "immune" ] && variant_itlbmh=1 || variant_itlbmh=0
[ "$variant_srbds" = "immune" ] && variant_srbds=1 || variant_srbds=0 [ "$variant_srbds" = "immune" ] && variant_srbds=1 || variant_srbds=0
[ "$variant_zenbleed" = "immune" ] && variant_zenbleed=1 || variant_zenbleed=0 [ "$variant_zenbleed" = "immune" ] && variant_zenbleed=1 || variant_zenbleed=0
[ "$variant_downfall" = "immune" ] && variant_downfall=1 || variant_downfall=0 [ "$variant_downfall" = "immune" ] && variant_downfall=1 || variant_downfall=0
[ "$variant_inception" = "immune" ] && variant_inception=1 || variant_inception=0
variantl1tf_sgx="$variantl1tf" variantl1tf_sgx="$variantl1tf"
# even if we are affected to L1TF, if there's no SGX, we're not affected to the original foreshadow # even if we are affected to L1TF, if there's no SGX, we're not affected to the original foreshadow
[ "$cpuid_sgx" = 0 ] && variantl1tf_sgx=1 [ "$cpuid_sgx" = 0 ] && variantl1tf_sgx=1
@ -1291,7 +1301,7 @@ while [ -n "${1:-}" ]; do
fi fi
case "$2" in case "$2" in
help) echo "The following parameters are supported for --variant (can be used multiple times):"; help) echo "The following parameters are supported for --variant (can be used multiple times):";
echo "1, 2, 3, 3a, 4, msbds, mfbds, mlpds, mdsum, l1tf, taa, mcepsc, srbds, zenbleed, downfall"; echo "1, 2, 3, 3a, 4, msbds, mfbds, mlpds, mdsum, l1tf, taa, mcepsc, srbds, zenbleed, downfall, inception";
exit 0;; exit 0;;
1) opt_cve_list="$opt_cve_list CVE-2017-5753"; opt_cve_all=0;; 1) opt_cve_list="$opt_cve_list CVE-2017-5753"; opt_cve_all=0;;
2) opt_cve_list="$opt_cve_list CVE-2017-5715"; opt_cve_all=0;; 2) opt_cve_list="$opt_cve_list CVE-2017-5715"; opt_cve_all=0;;
@ -1308,6 +1318,7 @@ while [ -n "${1:-}" ]; do
srbds) opt_cve_list="$opt_cve_list CVE-2020-0543"; opt_cve_all=0;; srbds) opt_cve_list="$opt_cve_list CVE-2020-0543"; opt_cve_all=0;;
zenbleed) opt_cve_list="$opt_cve_list CVE-2023-20593"; opt_cve_all=0;; zenbleed) opt_cve_list="$opt_cve_list CVE-2023-20593"; opt_cve_all=0;;
downfall) opt_cve_list="$opt_cve_list CVE-2022-40982"; opt_cve_all=0;; downfall) opt_cve_list="$opt_cve_list CVE-2022-40982"; opt_cve_all=0;;
inception) opt_cve_list="$opt_cve_list CVE-2023-20569"; opt_cve_all=0;;
*) *)
echo "$0: error: invalid parameter '$2' for --variant, see --variant help for a list" >&2; echo "$0: error: invalid parameter '$2' for --variant, see --variant help for a list" >&2;
exit 255 exit 255
@ -6283,6 +6294,29 @@ check_CVE_2022_40982_linux() {
fi fi
} }
#######################
# Inception section
check_CVE_2023_20569() {
cve='CVE-2023-20569'
_info "\033[1;34m$cve aka '$(cve2name "$cve")'\033[0m"
if [ "$os" = Linux ]
then
check_CVE_2023_20569_linux
else
_warn "Unsupported OS ($os)."
fi
}
check_CVE_2023_20569_linux() {
if ! is_cpu_affected "$cve" ; then
# override status & msg in case CPU is not vulnerable after all
pvulnstatus "$cve" OK "your CPU vendor reported your CPU model as not affected"
else
pvulnstatus "$cve" UNK "further checks are required"
fi
}
####################### #######################
# END OF VULNS SECTIONS # END OF VULNS SECTIONS