+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 v0.44+
+
+ Checking for vulnerabilities on current system
+ Kernel is Linux 5.4.0-65-generic #73-Ubuntu SMP Mon Jan 18 17:25:17 UTC 2021 x86_64
+ CPU is Intel(R) Xeon(R) Platinum 8358 CPU @ 2.60GHz
+
+ 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 (SPEC_CTRL feature bit)
+ * Indirect Branch Prediction Barrier (IBPB)
+ * PRED_CMD MSR is available: YES
+ * CPU indicates IBPB capability: YES (SPEC_CTRL feature bit)
+ * Single Thread Indirect Branch Predictors (STIBP)
+ * SPEC_CTRL MSR is available: YES
+ * CPU indicates STIBP capability: YES (Intel STIBP feature bit)
+ * Speculative Store Bypass Disable (SSBD)
+ * CPU indicates SSBD capability: YES (Intel SSBD)
+ * L1 data cache invalidation
+ * FLUSH_CMD MSR is available: YES
+ * CPU indicates L1D flush capability: YES (L1D flush feature bit)
+ * Microarchitectural Data Sampling
+ * VERW instruction is available: YES (MD_CLEAR feature bit)
+ * Enhanced IBRS (IBRS_ALL)
+ * CPU indicates ARCH_CAPABILITIES MSR availability: YES
+ * ARCH_CAPABILITIES MSR advertises IBRS_ALL capability: YES
+ * CPU explicitly indicates not being vulnerable to Meltdown/L1TF (RDCL_NO): YES
+ * CPU explicitly indicates not being vulnerable to Variant 4 (SSB_NO): NO
+ * CPU/Hypervisor indicates L1D flushing is not necessary on this system: YES
+ * Hypervisor indicates host CPU might be vulnerable to RSB underflow (RSBA): NO
+ * CPU explicitly indicates not being vulnerable to Microarchitectural Data Sampling (MDS_NO): YES
+ * CPU explicitly indicates not being vulnerable to TSX Asynchronous Abort (TAA_NO): YES
+ * CPU explicitly indicates not being vulnerable to iTLB Multihit (PSCHANGE_MSC_NO): YES
+ * CPU explicitly indicates having MSR for TSX control (TSX_CTRL_MSR): YES
+ * TSX_CTRL MSR indicates TSX RTM is disabled: YES
+ * TSX_CTRL MSR indicates TSX CPUID bit is cleared: YES
+ * CPU supports Transactional Synchronization Extensions (TSX): NO
+ * CPU supports Software Guard Extensions (SGX): YES
+ * CPU supports Special Register Buffer Data Sampling (SRBDS): NO
+ * CPU microcode is known to cause stability problems: NO (family 0x6 model 0x6a stepping 0x6 ucode 0xd000280 cpuid 0x606a6)
+ * CPU microcode is the latest known available version: NO (latest version is 0xd0002a0 dated 2021/04/25 according to builtin firmwares DB v191+i20210217)
+ * 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): YES
+ * Affected by CVE-2018-3639 (Variant 4, speculative store bypass): YES
+ * Affected by CVE-2018-3615 (Foreshadow (SGX), L1 terminal fault): YES
+ * Affected by CVE-2018-3620 (Foreshadow-NG (OS), L1 terminal fault): YES
+ * Affected by CVE-2018-3646 (Foreshadow-NG (VMM), L1 terminal fault): YES
+ * 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)): YES
+ * 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: Enhanced IBRS, IBPB: conditional, RSB filling)
+ > STATUS: VULNERABLE (IBRS+IBPB or 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 vulnerable)
+
+ CVE-2018-3640 aka Variant 3a, rogue system register read
+ * CPU microcode mitigates the vulnerability: YES
+ > STATUS: NOT VULNERABLE (your CPU microcode mitigates the vulnerability)
+
+ 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: YES
+ > STATUS: NOT VULNERABLE (your CPU microcode mitigates the vulnerability)
+
+ CVE-2018-3620 aka Foreshadow-NG (OS), L1 terminal fault
+ * Mitigated according to the /sys interface: YES (Not affected)
+ > STATUS: NOT VULNERABLE (Not affected)
+
+ CVE-2018-3646 aka Foreshadow-NG (VMM), L1 terminal fault
+ * Information from the /sys interface: Not affected
+ > STATUS: NOT VULNERABLE (your kernel reported your CPU model as not vulnerable)
+
+ 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 vulnerable)
+
+ 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 vulnerable)
+
+ 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 vulnerable)
+
+ 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 vulnerable)
+
+ 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 vulnerable)
+
+ 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 (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 vulnerable)
+
+ > 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
Code Review / csit.git / commitdiff