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.
Metrics
No CVSS v4.0
Attack Vector Network
Attack Complexity Low
Privileges Required High
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
User Interaction None
No CVSS v3.0
Access Vector Network
Access Complexity Low
Authentication Single
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
AV:N/AC:L/Au:S/C:C/I:C/A:C
This CVE is not in the KEV list.
Key SSVC decision points have not yet been added.
Affected Vendors & Products
Vendors | Products |
---|---|
Amd |
|
Configuration 1 [-]
|
No data.
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: AMD
Published: 2021-05-13T11:06:17.662304Z
Updated: 2024-09-17T04:25:26.352Z
Reserved: 2021-01-29T00:00:00
Link: CVE-2021-26311
Vulnrichment
No data.
NVD
Status : Modified
Published: 2021-05-13T12:15:07.597
Modified: 2024-11-21T05:56:04.090
Link: CVE-2021-26311
Redhat
No data.