HTTP request methods must be limited.

From Apache Server 2.4 UNIX Server Security Technical Implementation Guide

Part of SRG-APP-000093-WSR-000053

Associated with: CCI-001084

AS24-U1-001000_rule HTTP request methods must be limited.

Vulnerability discussion

The HTTP 1.1 protocol supports several request methods that are rarely used and potentially high risk. For example, methods such as PUT and DELETE are rarely used and should be disabled in keeping with the primary security principal of minimize features and options. Also, since the usage of these methods is typically to modify resources on the web server, they should be explicitly disallowed. Normal web server operation will typically require allowing only the GET, HEAD, and POST request methods. This will allow for downloading of web pages and submitting information to web forms. The OPTIONS request method will also be allowed as it is used to request which HTTP request methods are allowed.

Check content

Enter the following command: more <'INSTALLED PATH'>/conf/httpd.conf For every enabled "Directory" directive (except root), verify the following entry exists: Order allow,deny Deny from all If the statement above is found in the LimitExcept statement (i.e. ), this is a finding. If the statement above is found enabled but without the appropriate "LimitExcept" or "Order" statement, this is a finding. If the statement is not found inside an enabled "Directory" directive, this is a finding. NOTE: If the "LimitExcept" statement above is operationally limiting, this should be explicitly documented with the Web Manager, at which point this can be considered not a finding.

Fix text

Edit the "httpd.conf" file and add the following entries for every enabled directory except root. Order allow,deny Deny from all

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