Title

Web Distributed Authoring and Versioning (WebDAV) must be disabled. (Cat II impact)

Discussion

The Apache mod_dav and mod_dav_fs modules support WebDAV ('Web-based Distributed Authoring and Versioning') functionality for Apache. WebDAV is an extension to the HTTP protocol which allows clients to create, move, and delete files and resources on the web server. WebDAV is not widely used, and has serious security concerns as it may allow clients to modify unauthorized files on the web server. Therefore, the WebDav modules mod_dav and mod_dav_fs should be disabled.

Check Content

Open a command prompt window. Navigate to the “bin” directory (in many cases this may be [Drive Letter]:\[directory path]\Apache Software Foundation\Apache2.2\bin>). Enter the following command: httpd –M <enter> NOTE: Some installations may be running under apache.exe. In such case, validate by running the following command: apache -M <enter> This will provide a list of all loaded modules. If any of the following modules are found this is a finding: dav_module, dav_fs_module, or dav_lock_module.

Fix Text

Disable all WebDAV modules by adding a "#" in front of them within the httpd.conf file, and restarting the Apache service.

Additional Identifiers

Rule ID: SV-33169r2_rule

Vulnerability ID: V-26287

Group Title: WA00505

Expert Comments

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