: Pre-authentication buffer overflows or internal state desynchronization allow remote actors to disrupt or alter memory pointers. Critical Impact and Exploitation Vectors
– On devices where SSH is not required for management, disable the SSH server entirely. ssh20cisco125 vulnerability exclusive
| Condition | Details | |---|---| | | Cisco Secure Firewall ASA Software with the proprietary SSH stack enabled | | Introduced in | ASA Software Release 9.17.1 | | Configuration required | The device must be configured for SSH key‑based authentication | | Access required | SSH access must be allowed on at least one interface | Certain platforms, such as the Cisco Catalyst Center
# Run an aggressive target port scan to test access restrictions nmap -p 22 --script ssh-auth-methods Use code with caution. such as the Cisco Catalyst Center
Certain platforms, such as the Cisco Catalyst Center , have suffered from vulnerabilities where a static SSH host key was hardcoded into the system. This allows an unauthenticated, remote attacker to perform machine-in-the-middle (MitM) attacks, intercepting credentials and injecting unauthorized terminal commands.