CVE-2021-28507: 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.

Q: What is the vulnerability ID of this issue?

The vulnerability ID of this issue is CVE-2021-28507.

Q: What is the title of this vulnerability?

The title of this vulnerability is 'An issue has recently been discovered in Arista EOS where under certain conditions the service ACL c…'

Q: What is the severity of CVE-2021-28507?

The severity of CVE-2021-28507 is high with a CVSS score of 7.1.

Q: Which software is affected by CVE-2021-28507?

The affected software is Arista EOS versions 4.23.0 to 4.23.9m, 4.24.0 to 4.24.7m, 4.25.0 to 4.25.3, 4.25.4, 4.25.5 to 4.25.5.1m, and 4.26.0 to 4.26.2f.

Q: How can I fix CVE-2021-28507?

To fix CVE-2021-28507, update your Arista EOS software to a version that is not affected by the vulnerability.

Published Jan 14, 2022

Updated

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.

Affected Software

11 affected components

Arista EOS>=4.23.0<=4.23.9m

Arista EOS>=4.24.0<=4.24.7m

Arista EOS>=4.25.0<=4.25.3

Arista EOS>=4.25.4<=4.25.4m

Arista EOS>=4.25.5<=4.25.5.1m

Arista EOS>=4.26.0<=4.26.2f

Arista EOS=4.21.0f

Arista EOS=4.21.1f

Arista EOS=4.21.3f

Arista EOS=4.22.0f

Arista EOS=4.22.1f

Remediation

Patch Available

https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071

Information

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

Event History

Jan 14, 2022

CVE Published

via MITRE·07:04 PM

Data Sourced

via MITRE·07:04 PM

RemedyDescriptionSeverityWeakness

Frequently Asked Questions

What is the vulnerability ID of this issue?