SB2022041509 - Denial of service in Cisco IOS XR Software
Published: April 15, 2022
Security Bulletin ID
SB2022041509
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Resource management error (CVE-ID: CVE-2022-20758)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources within the application in the implementation of the Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality. A remote attacker can send a BGP update message that contains specific EVPN attributes and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.