SB2020121923 - Denial of service in Arista EOS VRF implementation
Published: December 19, 2020 Updated: May 17, 2025
Security Bulletin ID
SB2020121923
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2020-26568)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:L/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of UDP packets. A remote attacker can force malformed UDP packets to be forwarded across VRF boundaries when non-default VRFs are configured.
Remediation
Install update from vendor's website.