An issue has recently been discovered in Arista EOS where, under certain conditions, the service ACL configured for OpenConfig gNOI and OpenConfig RESTCONF might be bypassed, which results in the denied requests being forwarded to the agent.
Advisories
Source ID Title
EUVD EUVD EUVD-2021-15183 An issue has recently been discovered in Arista EOS where, under certain conditions, the service ACL configured for OpenConfig gNOI and OpenConfig RESTCONF might be bypassed, which results in the denied requests being forwarded to the agent.
Fixes

Solution

The recommended resolution is to upgrade to a remediated software version at your earliest convenience. Arista recommends customers move to the latest version of each release. CVE-2021-28507 has been fixed in the following releases: 4.26.3M and later releases in the 4.26.x train 4.25.6M and later releases in the 4.25.x train 4.25.4.1M and later releases in the 4.25.4.x train 4.24.8M and later releases in the 4.24.x train 4.23.10M and later releases in the 4.23.x train


Workaround

On the affected versions, all vulnerabilities can be mitigated by disabling OpenConfig gNMI/gNOI and OpenConfig RESTCONF and TerminAttr. If use of these agents is required, a hotfix employing a proxy service can be deployed.

History

Tue, 15 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00102}

epss

{'score': 0.00141}


cve-icon MITRE

Status: PUBLISHED

Assigner: Arista

Published:

Updated: 2024-09-17T04:20:33.347Z

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

Link: CVE-2021-28507

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-01-14T20:15:10.383

Modified: 2024-11-21T05:59:48.183

Link: CVE-2021-28507

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.