(mod_dav_svn): DoS (excessive memory use) when configured to provide path-based access control

The moddavsvn module for the Apache HTTP Server, as distributed in Apache Subversion 1.5.x and 1.6.x before 1.6.17, when the SVNPathAuthz shortcircuit option is enabled, allows remote attackers to cause a denial of service infinite loop and memory consumption in opportunistic circumstances by...