bigconf.conf in F5 BIG/ip 2.1.2 and earlier allows remote attackers to read arbitrary files by specifying the target file in the "file" parameter.
http://www.securityfocus.com/bid/778
http://www.iss.net/security_center/static/7771.php
http://marc.info/?l=bugtraq&m=94225879703021&w=2