ViewVC before 1.0.5 provides revision metadata without properly checking whether access was intended, which allows remote attackers to obtain sensitive information by reading (1) forbidden pathnames in the revision view, (2) log history that can only be reached by traversing a forbidden object, or (3) forbidden diff view path parameters.
bugs.debian.org/cgi-bin/bugreport.cgi?bug=471380
bugs.gentoo.org/show_bug.cgi?id=212288
secunia.com/advisories/29176
secunia.com/advisories/29460
security.gentoo.org/glsa/glsa-200803-29.xml
viewvc.tigris.org/source/browse/viewvc/trunk/CHANGES?rev=HEAD
www.securityfocus.com/bid/28055
www.vupen.com/english/advisories/2008/0734/references