Expansion modules must be fully reviewed, tested, and signed before they can exist on a production Apache web server.

From Apache Server 2.4 UNIX Server Security Technical Implementation Guide

Associated with: CCI-001749

AS24-U1-000230_rule Expansion modules must be fully reviewed, tested, and signed before they can exist on a production Apache web server.

Vulnerability discussion

In the case of a production web server, areas for content development and testing will not exist, as this type of content is only permissible on a development website. The process of developing on a functional production website entails a degree of trial and error and repeated testing. This process is often accomplished in an environment where debugging, sequencing, and formatting of content are the main goals. The opportunity for a malicious user to obtain files that reveal business logic and logon schemes is high in this situation. The existence of such immature content on a web server represents a significant security risk that is totally avoidable.The web server must enforce, internally or through an external utility, the signing of modules before they are implemented into a production environment. By signing modules, the author guarantees that the module has been reviewed and tested before production implementation.

Check content

Enter the following command: "httpd -M" This will provide a list of the loaded modules. Validate that all displayed modules are required for operations. If any module is not required for operation, this is a finding. NOTE: The following modules are needed for basic web function and do not need to be reviewed: core_module http_module so_module mpm_prefork_module For a complete list of signed Apache Modules, review https://httpd.apache.org/docs/2.4/mod/.

Fix text

Remove any unsigned modules.

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