Cisco Security Advisory: Cisco IOS Software is vulnerable to a Denial of Service (DoS) and potentially an arbitrary code execution attack when processing the user authentication credentials from an Authentication Proxy Telnet/FTP session. To exploit this vulnerability an attacker must first complete a TCP connection to the IOS device running affected software and receive an auth-proxy authentication prompt.
Cisco Security Advisory: Cisco IOS Software is vulnerable to a Denial of Service (DoS) and potentially an arbitrary code execution attack when processing the user authentication credentials from an Authentication Proxy Telnet/FTP session. To exploit this vulnerability an attacker must first complete a TCP connection to the IOS device running affected software and receive an auth-proxy authentication prompt.