The remote SVN views functionality (lib/vclib/svn/svn_ra.py) in ViewVC before 1.1.15 does not properly perform authorization, which allows remote attackers to bypass intended access restrictions via unspecified vectors.
https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0175
https://lwn.net/Articles/505096/
https://exchange.xforce.ibmcloud.com/vulnerabilities/76614
http://www.securityfocus.com/bid/54197
http://www.openwall.com/lists/oss-security/2012/06/25/8
http://www.mandriva.com/security/advisories?name=MDVSA-2013:134
http://www.debian.org/security/2012/dsa-2563
http://viewvc.tigris.org/source/browse/viewvc?view=rev&revision=2760
http://viewvc.tigris.org/source/browse/viewvc?view=rev&revision=2759
http://viewvc.tigris.org/source/browse/viewvc?view=rev&revision=2757
http://viewvc.tigris.org/source/browse/viewvc?view=rev&revision=2756
http://viewvc.tigris.org/source/browse/viewvc?view=rev&revision=2755
http://viewvc.tigris.org/source/browse/%2Acheckout%2A/viewvc/tags/1.1.15/CHANGES