PT-2022-9895 · Arista · Arista Eos

Published 2022-02-02 · Updated 2022-08-02 · CVE-2021-28503

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Arista EOS (affected versions not specified)

Description The issue affects Arista's EOS eAPI, allowing it to skip re-evaluating user credentials when certificate-based authentication is used. This enables remote attackers to access the device via eAPI. The issue was discovered internally, and there is no known case of malicious use in customer networks.

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

Improper Authentication

Weakness Enumeration

CWE-287

CWE-305

Related Identifiers

CVE-2021-28503

Affected Products

Arista Eos

References · 3

• https://osv.dev/vulnerability/CVE-2021-28503 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-28503 · Security Note
• https://arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072 · Vendor Advisory