Example fixed banner after upgrade:
[Detect Banner] -> [Verify Software with Cisco Checker] -> [Apply ACLs] -> [Deploy Software Update] Step 1: Query the Internal Firmware Version ssh-2.0-cisco-1.25 vulnerability
This version is known to be susceptible to several critical cryptographic weaknesses, including insecure key exchange algorithms, outdated encryption ciphers, and specific Cisco-branded vulnerabilities. If left unpatched, these vulnerabilities can allow attackers to intercept communications (Man-in-the-Middle), decrypt traffic, or gain unauthorized administrative access. Example fixed banner after upgrade: [Detect Banner] ->
: The device is utilizing version 1.25 of Cisco’s internal code package for handling secure shell connections. In certain scenarios involving specific versions of Cisco
In certain scenarios involving specific versions of Cisco products, unauthenticated RCE vulnerabilities have been linked to Erlang/OTP SSH components used within Cisco infrastructure, making older SSH implementations high-risk. Potential Risks and Impact
Historically, the SSH-2.0-Cisco-1.25 banner has been associated with several vulnerabilities in Cisco’s SSH implementation. A. Authentication Bypass (RSA-Based)
A: No. It is a version banner. However, it indicates the device is likely missing security patches, making it a prime target for malware or ransomware.