QID 43819

Date Published: 2021-04-20

QID 43819: Arista EOS Security Update for EVPN VxLAN (SA0057)

Arista EOS is the Worlds Most Advanced Network Operating System.

Arista EOS is a fully programmable and highly modular, Linux-based network operation system, using familiar industry standard CLI and runs a single binary software image across the Arista switching family.

In EVPN VxLAN setups , specific malformed packets can lead to incorrect MAC to IP bindings and as a result packets can be incorrectly forwarded across VLAN boundaries. This can result in traffic being discarded on the receiving VLAN. Affected EOS versions: 4.21.12M and below releases in the 4.21.x train. 4.22.7M and below releases in the 4.22.x train. 4.23.5M and below releases in the 4.23.x train. 4.24.2F and below releases in the 4.24.x train. QID Detection Logic (Authenticated):
The check matches Arista EOS version retrieved via Unix Auth using "show version" command.

This vulnerability could be exploited to cause denial of service in the form of interruptions in resource availability.

CVSS V3 rated as Medium - 5.9 severity.

CVSS V2 rated as Medium - 4.3 severity.

Solution

Refer to Arista Security Advisory SA0057 for patch details.

Vendor References

Arista:Security Advisory 0057 - www.arista.com/en/support/advisories-notices/security-advisories/11997-security-advisory-57

CVEs related to QID 43819

CVE-2020-26569 |

Software Advisories

Advisory ID	Software	Component	Link
Security Advisory 0057			www.arista.com/en/support/advisories-notices/security-advisories/11997-security-advisory-57

By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].