Directory traversal vulnerability in Mozilla Firefox 2.0.0.4 and earlier on Mac OS X and Unix allows remote attackers to read arbitrary files via …%2F (dot dot encoded slash) sequences in a resource:// URI.
ha.ckers.org/blog/20070516/read-firefox-settings-poc/
larholm.com/2007/05/25/firefox-0day-local-file-reading/
larholm.com/2007/06/04/unpatched-input-validation-flaw-in-firefox-2004/
osvdb.org/35920
secunia.com/advisories/25481
www.securityfocus.com/archive/1/470500/100/0/threaded
bugzilla.mozilla.org/show_bug.cgi?id=367428
bugzilla.mozilla.org/show_bug.cgi?id=380994