SB2021022519 - Denial of service in Cisco NX-OS Software ICMP Version 6
Published: February 25, 2021
Security Bulletin ID
SB2021022519
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) Memory leak (CVE-ID: CVE-2021-1229)
The vulnerability allows a remote attacker to perform denial of service (DoS) attack.
The vulnerability exists due to improper error handling when an IPv6-configured interface receives a specific type of ICMPv6 packet. A remote attacker can force the application to leak memory and cause a denial of service condition on the target system.
Remediation
Install update from vendor's website.