+++ /dev/null
-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 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)
- * PRED_CMD MSR is available: YES
- * 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
- * FLUSH_CMD MSR is available: NO
- * 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 0x830104d dated 2020/07/28 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): 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)
- * Kernel has array_index_mask_nospec: YES (1 occurrence(s) found of x86 64 bits array_index_mask_nospec())
- * Kernel has the Red Hat/Ubuntu patch: NO
- * Kernel has mask_nospec64 (arm64): NO
- * Kernel has array_index_nospec (arm64): NO
- > STATUS: NOT VULNERABLE (Mitigation: usercopy/swapgs barriers and __user pointer sanitization)
-
- CVE-2017-5715 aka Spectre Variant 2, branch target injection
- * Mitigated according to the /sys interface: YES (Mitigation: Full AMD retpoline, IBPB: conditional, IBRS_FW, STIBP: conditional, RSB filling)
- * Mitigation 1
- * Kernel is compiled with IBRS support: YES
- * IBRS enabled and active: YES (for firmware code only)
- * Kernel is compiled with IBPB support: YES
- * IBPB enabled and active: YES
- * Mitigation 2
- * Kernel has branch predictor hardening (arm): NO
- * Kernel compiled with retpoline option: YES
- * Kernel compiled with a retpoline-aware compiler: YES (kernel reports full retpoline compilation)
- > STATUS: NOT VULNERABLE (Full retpoline + IBPB are mitigating the vulnerability)
-
- CVE-2017-5754 aka Variant 3, Meltdown, rogue data cache load
- * Mitigated according to the /sys interface: YES (Not affected)
- * Kernel supports Page Table Isolation (PTI): YES
- * PTI enabled and active: NO
- * Reduced performance impact of PTI: NO (PCID/INVPCID not supported, performance impact of PTI will be significant)
- * 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 vendor reported your CPU model as not vulnerable)
-
- 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)
- * Kernel supports disabling speculative store bypass (SSB): YES (found in /proc/self/status)
- * SSB mitigation is enabled and active: YES (per-thread through prctl)
- * SSB mitigation currently active for selected processes: YES (irqbalance systemd-journald systemd-logind systemd-networkd systemd-resolved systemd-timesyncd systemd-udevd)
- > 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 vulnerable)
-
- CVE-2018-3620 aka Foreshadow-NG (OS), L1 terminal fault
- * Mitigated according to the /sys interface: YES (Not affected)
- * Kernel supports PTE inversion: YES (found in kernel image)
- * PTE inversion enabled and active: NO
- > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
-
- CVE-2018-3646 aka Foreshadow-NG (VMM), L1 terminal fault
- * Information from the /sys interface: Not affected
- * This system is a host running a hypervisor: NO
- * Mitigation 1 (KVM)
- * EPT is disabled: N/A (the kvm_intel module is not loaded)
- * Mitigation 2
- * L1D flush is supported by kernel: YES (found flush_l1d in kernel image)
- * L1D flush enabled: NO
- * Hardware-backed L1D flush supported: NO (flush will be done in software, this is slower)
- * Hyper-Threading (SMT) is enabled: YES
- > STATUS: NOT VULNERABLE (your CPU vendor 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)
- * Kernel supports using MD_CLEAR mitigation: YES (found md_clear implementation evidence in kernel image)
- * Kernel mitigation is enabled and active: NO
- * SMT is either mitigated or disabled: NO
- > 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)
- * Kernel supports using MD_CLEAR mitigation: YES (found md_clear implementation evidence in kernel image)
- * Kernel mitigation is enabled and active: NO
- * SMT is either mitigated or disabled: NO
- > 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)
- * Kernel supports using MD_CLEAR mitigation: YES (found md_clear implementation evidence in kernel image)
- * Kernel mitigation is enabled and active: NO
- * SMT is either mitigated or disabled: NO
- > 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)
- * Kernel supports using MD_CLEAR mitigation: YES (found md_clear implementation evidence in kernel image)
- * Kernel mitigation is enabled and active: NO
- * SMT is either mitigated or disabled: NO
- > 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)
- * TAA mitigation is supported by kernel: YES (found tsx_async_abort in kernel image)
- * TAA mitigation enabled and active: NO
- > 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)
- * This system is a host running a hypervisor: NO
- * iTLB Multihit mitigation is supported by kernel: YES (found itlb_multihit in kernel image)
- * iTLB Multihit mitigation enabled and active: NO
- > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
-
- CVE-2020-0543 aka Special Register Buffer Data Sampling (SRBDS)
- * Mitigated according to the /sys interface: YES (Not affected)
- * SRBDS mitigation control is supported by the kernel: YES (found SRBDS implementation evidence in kernel image. Your kernel is up to date for SRBDS mitigation)
- * SRBDS mitigation control is enabled and active: NO
- > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
-
- > SUMMARY: CVE-2017-5753:OK CVE-2017-5715:OK 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
-
-::
-
-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 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)
- * PRED_CMD MSR is available: YES
- * 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
- * FLUSH_CMD MSR is available: NO
- * 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 0x830104d dated 2020/07/28 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): 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)
-* Kernel has array_index_mask_nospec: YES (1 occurrence(s) found of x86 64 bits array_index_mask_nospec())
-* Kernel has the Red Hat/Ubuntu patch: NO
-* Kernel has mask_nospec64 (arm64): NO
-* Kernel has array_index_nospec (arm64): NO
-> STATUS: NOT VULNERABLE (Mitigation: usercopy/swapgs barriers and __user pointer sanitization)
-
-CVE-2017-5715 aka Spectre Variant 2, branch target injection
-* Mitigated according to the /sys interface: YES (Mitigation: Full AMD retpoline, IBPB: conditional, IBRS_FW, STIBP: conditional, RSB filling)
-* Mitigation 1
- * Kernel is compiled with IBRS support: YES
- * IBRS enabled and active: YES (for firmware code only)
- * Kernel is compiled with IBPB support: YES
- * IBPB enabled and active: YES
-* Mitigation 2
- * Kernel has branch predictor hardening (arm): NO
- * Kernel compiled with retpoline option: YES
- * Kernel compiled with a retpoline-aware compiler: YES (kernel reports full retpoline compilation)
-> STATUS: NOT VULNERABLE (Full retpoline + IBPB are mitigating the vulnerability)
-
-CVE-2017-5754 aka Variant 3, Meltdown, rogue data cache load
-* Mitigated according to the /sys interface: YES (Not affected)
-* Kernel supports Page Table Isolation (PTI): YES
- * PTI enabled and active: UNKNOWN (dmesg truncated, please reboot and relaunch this script)
- * Reduced performance impact of PTI: NO (PCID/INVPCID not supported, performance impact of PTI will be significant)
-* 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 vendor reported your CPU model as not vulnerable)
-
-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)
-* Kernel supports disabling speculative store bypass (SSB): YES (found in /proc/self/status)
-* SSB mitigation is enabled and active: YES (per-thread through prctl)
-* SSB mitigation currently active for selected processes: YES (irqbalance systemd-journald systemd-logind systemd-networkd systemd-resolved systemd-timesyncd systemd-udevd)
-> 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 vulnerable)
-
-CVE-2018-3620 aka Foreshadow-NG (OS), L1 terminal fault
-* Mitigated according to the /sys interface: YES (Not affected)
-* Kernel supports PTE inversion: YES (found in kernel image)
-* PTE inversion enabled and active: NO
-> STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
-
-CVE-2018-3646 aka Foreshadow-NG (VMM), L1 terminal fault
-* Information from the /sys interface: Not affected
-* This system is a host running a hypervisor: NO
-* Mitigation 1 (KVM)
- * EPT is disabled: N/A (the kvm_intel module is not loaded)
-* Mitigation 2
- * L1D flush is supported by kernel: YES (found flush_l1d in kernel image)
- * L1D flush enabled: NO
- * Hardware-backed L1D flush supported: NO (flush will be done in software, this is slower)
- * Hyper-Threading (SMT) is enabled: YES
-> STATUS: NOT VULNERABLE (your CPU vendor 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)
-* Kernel supports using MD_CLEAR mitigation: YES (found md_clear implementation evidence in kernel image)
-* Kernel mitigation is enabled and active: NO
-* SMT is either mitigated or disabled: NO
-> 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)
-* Kernel supports using MD_CLEAR mitigation: YES (found md_clear implementation evidence in kernel image)
-* Kernel mitigation is enabled and active: NO
-* SMT is either mitigated or disabled: NO
-> 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)
-* Kernel supports using MD_CLEAR mitigation: YES (found md_clear implementation evidence in kernel image)
-* Kernel mitigation is enabled and active: NO
-* SMT is either mitigated or disabled: NO
-> 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)
-* Kernel supports using MD_CLEAR mitigation: YES (found md_clear implementation evidence in kernel image)
-* Kernel mitigation is enabled and active: NO
-* SMT is either mitigated or disabled: NO
-> 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)
-* TAA mitigation is supported by kernel: YES (found tsx_async_abort in kernel image)
-* TAA mitigation enabled and active: NO
-> 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)
-* This system is a host running a hypervisor: NO
-* iTLB Multihit mitigation is supported by kernel: YES (found itlb_multihit in kernel image)
-* iTLB Multihit mitigation enabled and active: NO
-> STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
-
-CVE-2020-0543 aka Special Register Buffer Data Sampling (SRBDS)
-* Mitigated according to the /sys interface: YES (Not affected)
-* SRBDS mitigation control is supported by the kernel: YES (found SRBDS implementation evidence in kernel image. Your kernel is up to date for SRBDS mitigation)
-* SRBDS mitigation control is enabled and active: NO
-> STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
-
-> SUMMARY: CVE-2017-5753:OK CVE-2017-5715:OK 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 / blobdiff