Users and scripts running on behalf of users must be contained to the document root or home directory tree of the Apache web server.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-92779	AS24-U2-000350	SV-102867r1_rule		Medium

Description
A web server is designed to deliver content and execute scripts or applications on the request of a client or user. Containing user requests to files in the directory tree of the hosted web application and limiting the execution of scripts and applications guarantees that the user is not accessing information protected outside the application's realm. The web server must also prohibit users from jumping outside the hosted application directory tree through access to the user's home directory, symbolic links or shortcuts, or through search paths for missing files.

Description

A web server is designed to deliver content and execute scripts or applications on the request of a client or user. Containing user requests to files in the directory tree of the hosted web application and limiting the execution of scripts and applications guarantees that the user is not accessing information protected outside the application's realm. The web server must also prohibit users from jumping outside the hosted application directory tree through access to the user's home directory, symbolic links or shortcuts, or through search paths for missing files.

STIG	Date
Apache Server 2.4 UNIX Site Security Technical Implementation Guide	2019-10-03

Details

Check Text ( C-92085r1_chk )
Determine the location of the "HTTPD_ROOT" directory and the "httpd.conf" file: # httpd -V \| egrep -i 'httpd_root\|server_config_file' -D HTTPD_ROOT="/etc/httpd" -D SERVER_CONFIG_FILE="conf/httpd.conf" Verify there is a single "Require" directive with the value of "all denied". Verify there are no "Allow" or "Deny" directives in the root element. The following may be useful in extracting root directory elements from the Apache configuration for auditing: # perl -ne 'print if /^ * If there are "Allow" or "Deny" directives in the root element, this is a finding.

Check Text ( C-92085r1_chk )

Determine the location of the "HTTPD_ROOT" directory and the "httpd.conf" file:

# httpd -V | egrep -i 'httpd_root|server_config_file'
-D HTTPD_ROOT="/etc/httpd"
-D SERVER_CONFIG_FILE="conf/httpd.conf"

Verify there is a single "Require" directive with the value of "all denied".

Verify there are no "Allow" or "Deny" directives in the root element.

The following may be useful in extracting root directory elements from the Apache configuration for auditing:

# perl -ne 'print if /^ *
If there are "Allow" or "Deny" directives in the root element, this is a finding.

Fix Text (F-99023r1_fix)
Determine the location of the "HTTPD_ROOT" directory and the "httpd.conf" file: # httpd -V \| egrep -i 'httpd_root\|server_config_file' -D HTTPD_ROOT="/etc/httpd" -D SERVER_CONFIG_FILE="conf/httpd.conf" Set the root directory directive as follows: ... Require all denied ... Remove any "Deny" and "Allow" directives from the root element. Restart Apache: apachectl restart