The Apache web server must have resource mappings set to disable the serving of certain file types.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-214243	AS24-U1-000300	SV-214243r612240_rule		Medium

Description
Resource mapping is the process of tying a particular file type to a process in the web server that can serve that type of file to a requesting client and to identify which file types are not to be delivered to a client. By not specifying which files can and cannot be served to a user, the web server could deliver to a user web server configuration files, log files, password files, etc. The web server must only allow hosted application file types to be served to a user, and all other types must be disabled. Satisfies: SRG-APP-000141-WSR-000081, SRG-APP-000141-WSR-000083

Description

Resource mapping is the process of tying a particular file type to a process in the web server that can serve that type of file to a requesting client and to identify which file types are not to be delivered to a client. By not specifying which files can and cannot be served to a user, the web server could deliver to a user web server configuration files, log files, password files, etc. The web server must only allow hosted application file types to be served to a user, and all other types must be disabled. Satisfies: SRG-APP-000141-WSR-000081, SRG-APP-000141-WSR-000083

STIG	Date
Apache Server 2.4 UNIX Server Security Technical Implementation Guide	2021-06-23

Details

Check Text ( C-15457r276989_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" Review any "Action" or "AddHandler" directives: # cat //httpd.conf \| grep -i "Action" # cat //httpd.conf \| grep -i "AddHandler" If "Action" or "AddHandler" exist and they configure .exe, .dll, .com, .bat, or .csh, or any other shell as a viewer for documents, this is a finding. If this is not documented and approved by the Information System Security Officer (ISSO), this is a finding.

Check Text ( C-15457r276989_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"

Review any "Action" or "AddHandler" directives:

# cat //httpd.conf | grep -i "Action"
# cat //httpd.conf | grep -i "AddHandler"

If "Action" or "AddHandler" exist and they configure .exe, .dll, .com, .bat, or .csh, or any other shell as a viewer for documents, this is a finding.

If this is not documented and approved by the Information System Security Officer (ISSO), this is a finding.

Fix Text (F-15455r276990_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" Disable MIME types for .exe, .dll, .com, .bat, and .csh programs. If "Action" or "AddHandler" exist within the "httpd.conf" file and they configure .exe, .dll, .com, .bat, or .csh, remove those references. Restart Apache: apachectl restart Ensure this process is documented and approved by the ISSO.

Fix Text (F-15455r276990_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"

Disable MIME types for .exe, .dll, .com, .bat, and .csh programs.

If "Action" or "AddHandler" exist within the "httpd.conf" file and they configure .exe, .dll, .com, .bat, or .csh, remove those references.

Restart Apache: apachectl restart

Ensure this process is documented and approved by the ISSO.