CVE-2008-1145: Improper Limitation of a Pathname to a Restricted Directory

Directory traversal vulnerability in WEBrick in Ruby 1.8 before 1.8.5-p115 and 1.8.6-p114, and 1.9 through 1.9.0-1, when running on systems that support backslash \ path separators or case-insensitive file names, allows remote attackers to access arbitrary files via 1 "..%5c" encoded backslash...