Directory traversal vulnerability in BOA web server 0.94.8.2 and earlier allows remote attackers to read arbitrary files via a modified .. (dot dot) attack in the GET HTTP request that uses a "%2E" instead of a "."
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-00:60.boa.asc
http://archives.neohapsis.com/archives/bugtraq/2000-10/0092.html