VulnerabilityModified

CVE-2020-15898

This vulnerability is only susceptible to exploitation by unidirectional traffic (ex.

MEDIUM 5.3EPSS 0.97%

Does this matter?

Lower severity and a low EPSS score (0.97%). Track it; it rarely justifies an emergency change on its own.

Description

In Arista EOS malformed packets can be incorrectly forwarded across VLAN boundaries in one direction. This vulnerability is only susceptible to exploitation by unidirectional traffic (ex. UDP) and not bidirectional traffic (ex. TCP). This affects: EOS 7170 platforms version 4.21.4.1F and below releases in the 4.21.x train; EOS X-Series versions 4.21.11M and below releases in the 4.21.x train; 4.22.6M and below releases in the 4.22.x train; 4.23.4M and below releases in the 4.23.x train; 4.24.2.1F and below releases in the 4.24.x train.

CVSS 3.1: 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS: 0.97% probability · 60th percentile
CISA KEV: Not listed
Affected: arista/eos
Source: cve@mitre.org

References

https://www.arista.com/en/support/advisories-notices/security-advisories/11996-security-advisory-56Exploit, Vendor Advisory
https://www.arista.com/en/support/advisories-notices/security-advisories/11996-security-advisory-56Exploit, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.