Cisco IOS Software SSH X.509 Authentication Bypass Vulnerability CVE-2016-6474
- CVSSv3 Score
- Vulnerability description
A vulnerability in the implementation of X.509 Version 3 for SSH authentication functionality in Cisco IOS Software could allow an unauthenticated, remote attacker to bypass authentication on an affected system.
- Risk description
The vulnerability is due to improper validation of X.509 signatures during the SSH authentication phase. An attacker could exploit this vulnerability by presenting an invalid X.509 signature to an affected system. A successful exploit could allow the attacker to impersonate an existing valid user over an SSH connection.
See the referenced vendor advisory for a solution.
- Not available