Squid NTLM Buffer Overflow Vulnerability
Remote exploitation of a buffer overflow vulnerability in Squid Web Proxy Cache could allow a remote attacker to execute arbitrary code. Squid Web Proxy Cache supports Basic, Digest and NTLM authentication.
A remote attacker can compromise a target system if Squid Proxy is configured to use the NTLM authentication helper. The attacker can send an overly long password to overflow the buffer and execute arbitrary code.
http://seclists.org/lists/fulldisclosure/2004/Jun/0210.html