1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
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 Intel Atom(R) P5362 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 (SPEC_CTRL feature bit)
* Indirect Branch Prediction Barrier (IBPB)
* 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
* CPU indicates L1D flush capability: YES (L1D flush feature bit)
* Microarchitectural Data Sampling
* VERW instruction is available: YES (MD_CLEAR feature bit)
* Indirect Branch Predictor Controls
* Indirect Predictor Disable feature is available: NO
* Bottomless RSB Disable feature is available: NO
* BHB-Focused Indirect Predictor Disable feature is available: NO
* Enhanced IBRS (IBRS_ALL)
* CPU indicates ARCH_CAPABILITIES MSR availability: YES
* ARCH_CAPABILITIES MSR advertises IBRS_ALL capability: YES
* CPU explicitly indicates not being affected by Meltdown/L1TF (RDCL_NO): YES
* CPU explicitly indicates not being affected by Variant 4 (SSB_NO): NO
* CPU/Hypervisor indicates L1D flushing is not necessary on this system: YES
* Hypervisor indicates host CPU might be affected by RSB underflow (RSBA): NO
* CPU explicitly indicates not being affected by Microarchitectural Data Sampling (MDS_NO): YES
* CPU explicitly indicates not being affected by TSX Asynchronous Abort (TAA_NO): NO
* CPU explicitly indicates not being affected by iTLB Multihit (PSCHANGE_MSC_NO): YES
* CPU explicitly indicates having MSR for TSX control (TSX_CTRL_MSR): 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 0x6 model 0x86 stepping 0x7 ucode 0x4c000019 cpuid 0x80667)
* CPU microcode is the latest known available version: UNKNOWN (latest microcode version for your CPU model is unknown)
* 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): 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)): 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 affected)
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: 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 (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
|
