Active software modules must be minimized.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-26285	WA00500 W22	SV-33167r1_rule		Medium

Description
Modules are the source of Apache httpd servers core and dynamic capabilities. Thus not every module available is needed for operation. Most installations only need a small subset of the modules available. By minimizing the enabled modules to only those that are required, we reduce the number of doors and have therefore reduced the attack surface of the web site. Likewise having fewer modules means less software that could have vulnerabilities.

Description

Modules are the source of Apache httpd servers core and dynamic capabilities. Thus not every module available is needed for operation. Most installations only need a small subset of the modules available. By minimizing the enabled modules to only those that are required, we reduce the number of doors and have therefore reduced the attack surface of the web site. Likewise having fewer modules means less software that could have vulnerabilities.

STIG	Date
APACHE 2.2 Server for Windows Security Technical Implementation Guide	2018-12-24

Details

Check Text ( C-33806r1_chk )
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 and press Enter: httpd –M This will provide a list of the loaded modules. Discuss with the web administrator why all displayed modules are required for operation. If any module is not required for operation, this is a finding. Note: The following modules do not need to be discussed: core_module, win32_module, mpm_winnt_module, http_module, so_module.

Check Text ( C-33806r1_chk )

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 and press Enter: httpd –M

This will provide a list of the loaded modules. Discuss with the web administrator why all displayed modules are required for operation. If any module is not required for operation, this is a finding.

Note: The following modules do not need to be discussed: core_module, win32_module, mpm_winnt_module, http_module, so_module.

Fix Text (F-29455r1_fix)
Disable any modules that are not needed by adding a "#" in front of them within the httpd.conf file, and restarting the Apache httpd service.