Denial of Service Vulnerability in SEV Firmware by AMD
CVE-2021-26321

5.5MEDIUM

Key Information:

Vendor

Amd
Status
1st Gen Amd Epyc™
2nd Gen Amd Epyc™
3rd Gen Amd Epyc™
Vendor
CVE Published:
16 November 2021

What is CVE-2021-26321?

A vulnerability exists in the SEV Firmware due to insufficient validation of ID commands, which can potentially allow a local authenticated attacker to execute a denial of service against the Platform Security Processor (PSP). This flaw poses risks to system availability and could affect the overall integrity of the platform.

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Affected Version(s)

1st Gen AMD EPYC™ < unspecified

2nd Gen AMD EPYC™ < unspecified

3rd Gen AMD EPYC™ < unspecified

References

https://www.amd.com/en/corporate/product-security/bulleti...
x_refsource_MISC

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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