CVE-2021-26311

In the AMD SEV/SEV-ES feature, memory can be rearranged in the guest address space that is not detected by the attestation mechanism which could be used by a malicious hypervisor to potentially lead to arbitrary code execution within the guest VM if a malicious administrator has access to compromise the server hypervisor.

CVSS v3.0 7.2 HIGH
CVSS v2.0 9.0 HIGH

7.2^/10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.0^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:S/C:C/I:C/A:C

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1004	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:h:amd:epyc_7232p:-:::::::*
	cpe:2.3:h:amd:epyc_7251:-:::::::*
	cpe:2.3:h:amd:epyc_7252:-:::::::*
	cpe:2.3:h:amd:epyc_7261:-:::::::*
	cpe:2.3:h:amd:epyc_7262:-:::::::*
	cpe:2.3:h:amd:epyc_7272:-:::::::*
	cpe:2.3:h:amd:epyc_7281:-:::::::*
	cpe:2.3:h:amd:epyc_7282:-:::::::*
	cpe:2.3:h:amd:epyc_72f3:-:::::::*
	cpe:2.3:h:amd:epyc_7301:-:::::::*
	cpe:2.3:h:amd:epyc_7302:-:::::::*
	cpe:2.3:h:amd:epyc_7351:-:::::::*
	cpe:2.3:h:amd:epyc_7351p:-:::::::*
	cpe:2.3:h:amd:epyc_7371:-:::::::*
	cpe:2.3:h:amd:epyc_7401:-:::::::*
	cpe:2.3:h:amd:epyc_7401p:-:::::::*
	cpe:2.3:h:amd:epyc_7451:-:::::::*
	cpe:2.3:h:amd:epyc_7501:-:::::::*
	cpe:2.3:h:amd:epyc_7453:-:::::::*
	cpe:2.3:h:amd:epyc_74f3:-:::::::*
	cpe:2.3:h:amd:epyc_7443p:-:::::::*
	cpe:2.3:h:amd:epyc_7443:-:::::::*
	cpe:2.3:h:amd:epyc_7413:-:::::::*
	cpe:2.3:h:amd:epyc_73f3:-:::::::*
	cpe:2.3:h:amd:epyc_7343:-:::::::*
	cpe:2.3:h:amd:epyc_7313p:-:::::::*
	cpe:2.3:h:amd:epyc_7313:-:::::::*
	cpe:2.3:h:amd:epyc_7502:-:::::::*
	cpe:2.3:h:amd:epyc_7452:-:::::::*
	cpe:2.3:h:amd:epyc_7402:-:::::::*
	cpe:2.3:h:amd:epyc_7402p:-:::::::*
	cpe:2.3:h:amd:epyc_7352:-:::::::*
	cpe:2.3:h:amd:epyc_7302p:-:::::::*
	cpe:2.3:h:amd:epyc_7551:-:::::::*
	cpe:2.3:h:amd:epyc_7551p:-:::::::*
	cpe:2.3:h:amd:epyc_7601:-:::::::*
	cpe:2.3:h:amd:epyc_7763:-:::::::*
	cpe:2.3:h:amd:epyc_7713p:-:::::::*
	cpe:2.3:h:amd:epyc_7713:-:::::::*
	cpe:2.3:h:amd:epyc_7663:-:::::::*
	cpe:2.3:h:amd:epyc_7643:-:::::::*
	cpe:2.3:h:amd:epyc_75f3:-:::::::*
	cpe:2.3:h:amd:epyc_7543p:-:::::::*
	cpe:2.3:h:amd:epyc_7543:-:::::::*
	cpe:2.3:h:amd:epyc_7513:-:::::::*
	cpe:2.3:h:amd:epyc_7f72:-:::::::*
	cpe:2.3:h:amd:epyc_7f52:-:::::::*
	cpe:2.3:h:amd:epyc_7f32:-:::::::*
	cpe:2.3:h:amd:epyc_7h12:-:::::::*
	cpe:2.3:h:amd:epyc_7742:-:::::::*
	cpe:2.3:h:amd:epyc_7702:-:::::::*
	cpe:2.3:h:amd:epyc_7702p:-:::::::*
	cpe:2.3:h:amd:epyc_7662:-:::::::*
	cpe:2.3:h:amd:epyc_7642:-:::::::*
	cpe:2.3:h:amd:epyc_7552:-:::::::*
	cpe:2.3:h:amd:epyc_7542:-:::::::*
	cpe:2.3:h:amd:epyc_7532:-:::::::*
	cpe:2.3:h:amd:epyc_7502p:-:::::::*
	cpe:2.3:h:amd:epyc_embedded_3351:-:::::::*
	cpe:2.3:h:amd:epyc_embedded_3255:-:::::::*
	cpe:2.3:h:amd:epyc_embedded_3251:-:::::::*
	cpe:2.3:h:amd:epyc_embedded_3201:-:::::::*
	cpe:2.3:h:amd:epyc_embedded_3151:-:::::::*
	cpe:2.3:h:amd:epyc_embedded_3101:-:::::::*
cpe:2.3:h:amd:epyc_embedded_3451:-:::::::*

Information

Published : 2021-05-13 05:15

Updated : 2021-05-25 07:49

NVD link : CVE-2021-26311

Mitre link : CVE-2021-26311

JSON object : View

CWE

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

Products Affected

amd

epyc_73f3
epyc_7542
epyc_7351p
epyc_7401p
epyc_7343
epyc_7501
epyc_7443
epyc_7402p
epyc_7642
epyc_embedded_3255
epyc_embedded_3151
epyc_7261
epyc_7352
epyc_7551p
epyc_7402
epyc_7f52
epyc_7f72
epyc_embedded_3251
epyc_7452
epyc_7552
epyc_7532
epyc_7513
epyc_7313p
epyc_7551
epyc_7742
epyc_7301
epyc_72f3
epyc_7763
epyc_7713
epyc_7h12
epyc_7251
epyc_74f3
epyc_7302p
epyc_7351
epyc_7502
epyc_7543
epyc_7401
epyc_7663
epyc_7502p
epyc_7643
epyc_embedded_3101
epyc_7281
epyc_embedded_3451
epyc_7601
epyc_embedded_3351
epyc_7443p
epyc_7543p
epyc_7702p
epyc_7313
epyc_embedded_3201
epyc_7451
epyc_7453
epyc_7371
epyc_7282
epyc_7702
epyc_7662
epyc_7302
epyc_7713p
epyc_7252
epyc_7413
epyc_7f32
epyc_7232p
epyc_7272
epyc_7262
epyc_75f3

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"vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C", "authentication": "SINGLE", "integrityImpact": "COMPLETE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "severity": "HIGH", "acInsufInfo": false, "impactScore": 10.0, "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.2}}, "publishedDate": "2021-05-13T12:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": 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7.2 /10