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authorpmikus <peter.mikus@protonmail.ch>2022-10-03 14:42:34 +0200
committerPeter Mikus <peter.mikus@protonmail.ch>2022-10-03 14:09:00 +0000
commit14fe52e81c59a5a3558f4f587e56b75e388191dc (patch)
treefda33cb74b18dc0f6dcdde168b1113badeaf5a5b /docs/report/introduction/environment/sut_meltspec_zn2.rst
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+Spectre and Meltdown Checks
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Following section displays the output of a running shell script to tell if
+system is vulnerable against the several speculative execution CVEs that were
+made public in 2018. Script is available on `Spectre & Meltdown Checker Github
+<https://github.com/speed47/spectre-meltdown-checker>`_.
+
+::
+
+ Spectre and Meltdown mitigation detection tool v0.45
+
+ Checking for vulnerabilities on current system
+ Kernel is Linux 5.15.0-46-generic #49-Ubuntu SMP Thu Aug 4 18:03:25 UTC 2022 x86_64
+ CPU is AMD EPYC 7532 32-Core Processor
+
+ Hardware check
+ * Hardware support (CPU microcode) for mitigation techniques
+ * Indirect Branch Restricted Speculation (IBRS)
+ * SPEC_CTRL MSR is available: YES
+ * CPU indicates IBRS capability: YES (IBRS_SUPPORT feature bit)
+ * CPU indicates preferring IBRS always-on: NO
+ * CPU indicates preferring IBRS over retpoline: YES
+ * Indirect Branch Prediction Barrier (IBPB)
+ * CPU indicates IBPB capability: YES (IBPB_SUPPORT feature bit)
+ * Single Thread Indirect Branch Predictors (STIBP)
+ * SPEC_CTRL MSR is available: YES
+ * CPU indicates STIBP capability: YES (AMD STIBP feature bit)
+ * CPU indicates preferring STIBP always-on: NO
+ * Speculative Store Bypass Disable (SSBD)
+ * CPU indicates SSBD capability: YES (AMD SSBD in SPEC_CTRL)
+ * L1 data cache invalidation
+ * CPU indicates L1D flush capability: NO
+ * CPU supports Transactional Synchronization Extensions (TSX): NO
+ * CPU supports Software Guard Extensions (SGX): NO
+ * CPU supports Special Register Buffer Data Sampling (SRBDS): NO
+ * CPU microcode is known to cause stability problems: NO (family 0x17 model 0x31 stepping 0x0 ucode 0x8301038 cpuid 0x830f10)
+ * CPU microcode is the latest known available version: NO (latest version is 0x8301052 dated 2021/11/11 according to builtin firmwares DB v222+i20220208)
+ * CPU vulnerability to the speculative execution attack variants
+ * Affected by CVE-2017-5753 (Spectre Variant 1, bounds check bypass): YES
+ * Affected by CVE-2017-5715 (Spectre Variant 2, branch target injection): YES
+ * Affected by CVE-2017-5754 (Variant 3, Meltdown, rogue data cache load): NO
+ * Affected by CVE-2018-3640 (Variant 3a, rogue system register read): NO
+ * Affected by CVE-2018-3639 (Variant 4, speculative store bypass): YES
+ * Affected by CVE-2018-3615 (Foreshadow (SGX), L1 terminal fault): NO
+ * Affected by CVE-2018-3620 (Foreshadow-NG (OS), L1 terminal fault): NO
+ * Affected by CVE-2018-3646 (Foreshadow-NG (VMM), L1 terminal fault): NO
+ * Affected by CVE-2018-12126 (Fallout, microarchitectural store buffer data sampling (MSBDS)): NO
+ * Affected by CVE-2018-12130 (ZombieLoad, microarchitectural fill buffer data sampling (MFBDS)): NO
+ * Affected by CVE-2018-12127 (RIDL, microarchitectural load port data sampling (MLPDS)): NO
+ * Affected by CVE-2019-11091 (RIDL, microarchitectural data sampling uncacheable memory (MDSUM)): NO
+ * Affected by CVE-2019-11135 (ZombieLoad V2, TSX Asynchronous Abort (TAA)): NO
+ * Affected by CVE-2018-12207 (No eXcuses, iTLB Multihit, machine check exception on page size changes (MCEPSC)): NO
+ * Affected by CVE-2020-0543 (Special Register Buffer Data Sampling (SRBDS)): NO
+
+ CVE-2017-5753 aka Spectre Variant 1, bounds check bypass
+ * Mitigated according to the /sys interface: YES (Mitigation: usercopy/swapgs barriers and __user pointer sanitization)
+ > STATUS: UNKNOWN (/sys vulnerability interface use forced, but its not available!)
+
+ CVE-2017-5715 aka Spectre Variant 2, branch target injection
+ * Mitigated according to the /sys interface: YES (Mitigation: Retpolines, IBPB: conditional, IBRS_FW, STIBP: always-on, RSB filling)
+ > STATUS: VULNERABLE (retpoline+IBPB is needed to mitigate the vulnerability)
+
+ CVE-2017-5754 aka Variant 3, Meltdown, rogue data cache load
+ * Mitigated according to the /sys interface: YES (Not affected)
+ * Running as a Xen PV DomU: NO
+ > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
+
+ CVE-2018-3640 aka Variant 3a, rogue system register read
+ * CPU microcode mitigates the vulnerability: YES
+ > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
+
+ CVE-2018-3639 aka Variant 4, speculative store bypass
+ * Mitigated according to the /sys interface: YES (Mitigation: Speculative Store Bypass disabled via prctl and seccomp)
+ > STATUS: NOT VULNERABLE (Mitigation: Speculative Store Bypass disabled via prctl and seccomp)
+
+ CVE-2018-3615 aka Foreshadow (SGX), L1 terminal fault
+ * CPU microcode mitigates the vulnerability: N/A
+ > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
+
+ CVE-2018-3620 aka Foreshadow-NG (OS), L1 terminal fault
+ * Mitigated according to the /sys interface: YES (Not affected)
+ > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
+
+ CVE-2018-3646 aka Foreshadow-NG (VMM), L1 terminal fault
+ * Information from the /sys interface: Not affected
+ > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
+
+ CVE-2018-12126 aka Fallout, microarchitectural store buffer data sampling (MSBDS)
+ * Mitigated according to the /sys interface: YES (Not affected)
+ > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
+
+ CVE-2018-12130 aka ZombieLoad, microarchitectural fill buffer data sampling (MFBDS)
+ * Mitigated according to the /sys interface: YES (Not affected)
+ > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
+
+ CVE-2018-12127 aka RIDL, microarchitectural load port data sampling (MLPDS)
+ * Mitigated according to the /sys interface: YES (Not affected)
+ > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
+
+ CVE-2019-11091 aka RIDL, microarchitectural data sampling uncacheable memory (MDSUM)
+ * Mitigated according to the /sys interface: YES (Not affected)
+ > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
+
+ CVE-2019-11135 aka ZombieLoad V2, TSX Asynchronous Abort (TAA)
+ * Mitigated according to the /sys interface: YES (Not affected)
+ > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
+
+ CVE-2018-12207 aka No eXcuses, iTLB Multihit, machine check exception on page size changes (MCEPSC)
+ * Mitigated according to the /sys interface: YES (Not affected)
+ > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
+
+ CVE-2020-0543 aka Special Register Buffer Data Sampling (SRBDS)
+ * Mitigated according to the /sys interface: YES (Not affected)
+ > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
+
+ > SUMMARY: CVE-2017-5753:?? CVE-2017-5715:KO CVE-2017-5754:OK CVE-2018-3640:OK CVE-2018-3639:OK CVE-2018-3615:OK CVE-2018-3620:OK CVE-2018-3646:OK CVE-2018-12126:OK CVE-2018-12130:OK CVE-2018-12127:OK CVE-2019-11091:OK CVE-2019-11135:OK CVE-2018-12207:OK CVE-2020-0543:OK \ No newline at end of file