PT-2021-17870 · Arista · Mos+1

Published 2021-09-09 · Updated 2021-09-22 · CVE-2021-28494

Positive Technologies (AI Summary)

CVSS v3.1

9.6

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions: Arista Metamako Operating System versions prior to MOS-0.34.0

Description: The issue allows unprivileged users to bypass authentication under certain conditions when accessing the Web UI of Arista's MOS software, which is supported on the 7130 product line.

Recommendations: For versions prior to MOS-0.34.0, update to a version newer than MOS-0.34.0 to resolve the issue. As a temporary workaround, consider restricting access to the Web UI until a patch is available.

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2021-28494

Affected Products

Arista Metamako Operating System

Mos

References · 5

• https://osv.dev/vulnerability/CVE-2021-28494 · Vendor Advisory
• https://arista.com/en/support/advisories-notices/security-advisories/12916-security-advisory-68 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-28494 · Security Note
• https://t.me/cibsecurity/28583 · Telegram Post
• https://t.me/cvenotify/21280 · Telegram Post