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