Buffer overflows in AnalogX Proxy before 4.12 allows remote attackers to cause a denial of service and possibly execute arbitrary code via (1) a long HTTP request to TCP port 6588 or (2) a SOCKS 4A request to TCP port 1080 with a long DNS hostname.
http://www.iss.net/security_center/static/9456.php
http://www.iss.net/security_center/static/9455.php
http://www.analogx.com/contents/download/network/proxy.htm
http://archives.neohapsis.com/archives/bugtraq/2002-07/0006.html