CVE-2011-1783

El módulo mod_dav_svn para Apache HTTP Server, como se distribuye en Apache Subersion v1.5.x y v1.6.x antes de 1.6.17, cuando la opción SVNPathAuthz short_circuit está habilitada permite a atacantes remotos a causar una denegación de servicio (bucle infinito y consumo de memoria) mediante la petición de datos en circunstancias oportunistas.

Subversion is a concurrent version control system which enables one or more users to collaborate in developing and maintaining a hierarchy of files and directories while keeping a history of all changes. The mod_dav_svn module is used with the Apache HTTP Server to allow access to Subversion repositories via HTTP. An infinite loop flaw was found in the way the mod_dav_svn module processed certain data sets. If the SVNPathAuthz directive was set to "short_circuit", and path-based access control for files and directories was enabled, a malicious, remote user could use this flaw to cause the httpd process serving the request to consume an excessive amount of system memory. Various other issues were also addressed.