Buffer overflow in the web proxy for GateKeeper Pro 4.7 allows remote attackers to execute arbitrary code via a long GET request.
https://exchange.xforce.ibmcloud.com/vulnerabilities/15277
http://marc.info/?l=bugtraq&m=107755692400728&w=2
http://lists.grok.org.uk/pipermail/full-disclosure/2004-February/017703.html