contrib/hook-scripts/svn-keyword-check.pl in Subversion before 1.6.23 allows remote authenticated users with commit permissions to execute arbitrary commands via shell metacharacters in a filename.
https://www.exploit-db.com/exploits/40507/
https://subversion.apache.org/security/CVE-2013-2088-advisory.txt
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18772
http://lists.opensuse.org/opensuse-updates/2013-07/msg00015.html