| name | cis-apache-2.3 |
| description | Ensure the WebDAV Modules Are Disabled |
| category | cis-apache |
| version | 3.6.0 |
| author | cyberstrike-official |
| tags | ["cis","apache","linux","modules","webdav"] |
| cis_id | 2.3 |
| cis_benchmark | CIS Apache HTTP Server 2.2 Benchmark v3.6.0 |
| tech_stack | ["linux","apache"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
Ensure the WebDAV Modules Are Disabled
Description
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.
Rationale
WebDAV is not widely used, and it has serious security concerns because 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.
Impact
None documented
Audit Procedure
Perform the following to determine if the WebDAV modules are disabled.
Run the httpd server with the -M option to list enabled modules:
Note: If the WebDav modules are correctly disabled, the only output when executing the above command should be Syntax OK.
Remediation
Perform either one of the following to disable the WebDAV modules:
- For source builds with static modules, run the Apache
./configure script without including mod_dav and mod_dav_fs in the --enable-modules=configure script options.
$ cd $DOWNLOAD/httpd-2.2.22
$ ./configure
- For dynamically loaded modules, comment out or remove the
LoadModule directive for the mod_dav and mod_dav_fs modules from the httpd.conf file.
Default Value
The modules are not enabled with a default source build.
References
- https://httpd.apache.org/docs/2.2/mod/mod_dav.html
CIS Controls
Version 6
9.1 Limit Open Ports, Protocols, and Services
Ensure that only ports, protocols, and services with validated business needs are running on each system.