PT-2022-9758 · Amd · Sev-Legacy Firmware

Published 2022-05-10 · Updated 2022-05-17 · CVE-2021-26408

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions SEV-legacy firmware (affected versions not specified)

Description The issue is related to insufficient validation of elliptic curve points in the firmware, which may compromise the integrity or confidentiality of guests during migration.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2021-26408

Affected Products

Sev-Legacy Firmware

References · 4

• https://osv.dev/vulnerability/CVE-2021-26408 · Vendor Advisory
• https://amd.com/en/corporate/product-security/bulletin/amd-sb-1021 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-26408 · Security Note
• https://t.me/cvenotify/30345 · Telegram Post