An issue has recently been discovered in Arista EOS where the incorrect use of EOS's AAA API’s by the OpenConfig and TerminAttr agents could result in unrestricted access to the device for local users with nopassword configuration.
Advisories
Source ID Title
EUVD EUVD EUVD-2021-15176 An issue has recently been discovered in Arista EOS where the incorrect use of EOS's AAA API’s by the OpenConfig and TerminAttr agents could result in unrestricted access to the device for local users with nopassword configuration.
Fixes

Solution

The recommended resolution is to upgrade to a remediated software version at your earliest convenience. Artista recommends customers move to the latest version of each release that contains all the fixes listed below. CVE-2021-28500 has been fixed in the following releases: 4.26.2F and later releases in the 4.26.x train 4.25.5M and later releases in the 4.25.x train 4.25.4.1M and later releases in the 4.25.4.x train 4.24.7M and later releases in the 4.24.x train 4.23.9M and later releases in the 4.23.x train 4.22.12M and later releases in the 4.22.x train 4.21.15M and later releases in the 4.21.x train


Workaround

For local users whose authentication is with nopassword, enforce a password or remove the user. Ensure that the following configuration does not exist where a local user is configured with nopassword.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: Arista

Published:

Updated: 2024-09-16T18:44:53.535Z

Reserved: 2021-03-16T00:00:00

Link: CVE-2021-28500

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-01-14T20:15:10.217

Modified: 2024-11-21T05:59:47.440

Link: CVE-2021-28500

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.