Home/CVE/The impact of this vulnerability is that Arista's EOS eAPI may skip re-evaluating user credentials when certificate base
CVE

CVE-2021-28503

The impact of this vulnerability is that Arista's EOS eAPI may skip re-evaluating user credentials when certificate base

The impact of this vulnerability is that Arista's EOS eAPI may skip re-evaluating user credentials when certificate based authentication is used, which allows remote attackers to access the device via eAPI.

HIGH · CVSS 7.4 EPSS 0.00402
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-287Improper Authentication
CWE-305Authentication Bypass by Primary Weakness
▤

Affected Products & Versions

5
arista eos>= 4.22 and <= 4.22.9m
arista eos>= 4.23 and <= 4.23.9
arista eos>= 4.24 and <= 4.24.7
arista eos>= 4.25 and <= 4.25.5
arista eos>= 4.26 and <= 4.26.2
▣

Scoring & Timeline

7.4
HIGH · CVSS v3.1 · psirt@arista.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD04 Feb 2022 · 11:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072MitigationPatchVendor Advisory
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