SB2020080610 - Denial of service in Cisco IOS XR Software
Published: August 6, 2020
Security Bulletin ID
SB2020080610
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) Infinite loop (CVE-ID: CVE-2020-3449)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an incorrect calculation of lexicographical order when displaying additional path information within the Border Gateway Protocol (BGP) additional paths feature. A remote attacker can send a specific BGP update from a BGP neighbor peer session of an affected device, consume all available system resources and cause denial of service conditions.
Remediation
Install update from vendor's website.