X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=docs%2Freport%2Fintroduction%2Ftest_environment_sut_meltspec_dnv.rst;h=4b3a8a134d3bad44eb3807915a1c208ca46e3d87;hp=71d1b6808f9ed7b51cdb2c730ef6a0f9668ecbe9;hb=HEAD;hpb=f7db30b2763d674b7a0d3b690985d10f5f5be0d1 diff --git a/docs/report/introduction/test_environment_sut_meltspec_dnv.rst b/docs/report/introduction/test_environment_sut_meltspec_dnv.rst deleted file mode 100644 index 71d1b6808f..0000000000 --- a/docs/report/introduction/test_environment_sut_meltspec_dnv.rst +++ /dev/null @@ -1,126 +0,0 @@ -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 -`_. - -- CVE-2017-5753 [bounds check bypass] aka 'Spectre Variant 1' -- CVE-2017-5715 [branch target injection] aka 'Spectre Variant 2' -- CVE-2017-5754 [rogue data cache load] aka 'Meltdown' aka 'Variant 3' -- CVE-2018-3640 [rogue system register read] aka 'Variant 3a' -- CVE-2018-3639 [speculative store bypass] aka 'Variant 4' -- CVE-2018-3615 [L1 terminal fault] aka 'Foreshadow (SGX)' -- CVE-2018-3620 [L1 terminal fault] aka 'Foreshadow-NG (OS)' -- CVE-2018-3646 [L1 terminal fault] aka 'Foreshadow-NG (VMM)' - -:: - - $ sudo ./spectre-meltdown-checker.sh --no-color - - Spectre and Meltdown mitigation detection tool v0.40 - - Checking for vulnerabilities on current system - Kernel is Linux 4.15.0-36-generic #39~16.04.1-Ubuntu SMP Tue Sep 25 08:59:23 UTC 2018 x86_64 - CPU is Intel(R) Atom(TM) CPU C3858 @ 2.00GHz - - 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: NO - * CPU indicates L1D flush capability: NO - * Enhanced IBRS (IBRS_ALL) - * CPU indicates ARCH_CAPABILITIES MSR availability: YES - * ARCH_CAPABILITIES MSR advertises IBRS_ALL capability: NO - * CPU explicitly indicates not being vulnerable to Meltdown (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 supports Software Guard Extensions (SGX): NO - * CPU microcode is known to cause stability problems: NO (model 0x5f family 0x6 stepping 0x1 ucode 0x24 cpuid 0x506f1) - * CPU microcode is the latest known available version: YES (latest version is 0x24 dated 2018/05/11 according to builtin MCExtractor DB v84 - 2018/09/27) - * CPU vulnerability to the speculative execution attack variants - * Vulnerable to CVE-2017-5753 (Spectre Variant 1, bounds check bypass): YES - * Vulnerable to CVE-2017-5715 (Spectre Variant 2, branch target injection): YES - * Vulnerable to CVE-2017-5754 (Variant 3, Meltdown, rogue data cache load): NO - * Vulnerable to CVE-2018-3640 (Variant 3a, rogue system register read): YES - * Vulnerable to CVE-2018-3639 (Variant 4, speculative store bypass): YES - * Vulnerable to CVE-2018-3615 (Foreshadow (SGX), L1 terminal fault): NO - * Vulnerable to CVE-2018-3620 (Foreshadow-NG (OS), L1 terminal fault): YES - * Vulnerable to CVE-2018-3646 (Foreshadow-NG (VMM), L1 terminal fault): YES - - CVE-2017-5753 aka 'Spectre Variant 1, bounds check bypass' - * Mitigated according to the /sys interface: YES (Mitigation: __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 - > STATUS: NOT VULNERABLE (Mitigation: __user pointer sanitization) - - CVE-2017-5715 aka 'Spectre Variant 2, branch target injection' - * Mitigated according to the /sys interface: YES (Mitigation: Full generic retpoline, IBPB, IBRS_FW) - * Mitigation 1 - * Kernel is compiled with IBRS support: YES - * IBRS enabled and active: YES (for kernel and firmware code) - * 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 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) - * Kernel supports speculation store bypass: YES (found in /proc/self/status) - > 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 (Not affected) - - CVE-2018-3646 aka 'Foreshadow-NG (VMM), L1 terminal fault' - * Information from the /sys interface: - * This system is a host running an hypervisor: NO - * Mitigation 1 (KVM) - * EPT is disabled: NO - * Mitigation 2 - * L1D flush is supported by kernel: YES (found flush_l1d in kernel image) - * L1D flush enabled: UNKNOWN (unrecognized mode) - * Hardware-backed L1D flush supported: NO (flush will be done in software, this is slower) - * Hyper-Threading (SMT) is enabled: NO - > STATUS: NOT VULNERABLE (this system is not running an hypervisor) - - > 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 - - Need more detailed information about mitigation options? Use --explain - A false sense of security is worse than no security at all, see --disclaimer