QID 43999

Date Published: 2023-03-27

QID 43999: Arista EOS VXLAN rule Vulnerability (SA0073)

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.

On affected Arista EOS platforms, if a VXLAN match rule exists in an IPv4 access-list that is applied to the ingress of an L2 or an L3 port/SVI, the VXLAN rule and subsequent ACL rules in that access list will ignore the specified IP protocol.

Affected EOS versions:
4.26.3M and below releases in the 4.26.x train
4.27.0F in the 4.27.x train
QID Detection Logic (Authenticated):
The check matches Arista EOS version retrieved via Unix Auth using "show version" command.

Successful exploitation could compromise confidentiality, integrity and availability

CVSS V3 rated as High - 7.5 severity.

CVSS V2 rated as Medium - 5 severity.

Solution

Refer to Arista Security Advisory SA0073 for patch details.

Vendor References

15267-security-advisory-0073 - www.arista.com/en/support/advisories-notices/security-advisory/15267-security-advisory-0073

CVEs related to QID 43999

CVE-2021-28505 |

Software Advisories

Advisory ID	Software	Component	Link
15267-security-advisory-0073			www.arista.com/en/support/advisories-notices/security-advisory/15267-security-advisory-0073

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].