SB2020100822 - Denial of service in Arista EOS IS-IS implementation
Published: October 8, 2020 Updated: May 17, 2025
Security Bulletin ID
SB2020100822
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2020-15897)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of network packets when using IS-IS protocol. A remote attacker can send specially crafted link-state PDU packets to the device and perform a denial of service attack.
Remediation
Install update from vendor's website.