SB2021090910 - Denial of service in Cisco IOS XR Software
Published: September 9, 2021
Security Bulletin ID
SB2021090910
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) Reachable Assertion (CVE-ID: CVE-2021-1440)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a reachable assertion in the implementation of the Resource Public Key Infrastructure (RPKI) feature. A remote attacker can send a specially crafted RTR packet and cause a denial of service condition on the target system.
Remediation
Install update from vendor's website.