The Apache web server must produce log records containing sufficient information to establish the identity of any user/subject or process associated with an event.

From Apache Server 2.4 UNIX Site Security Technical Implementation Guide

Part of SRG-APP-000100-WSR-000064

Associated with: CCI-001487

AS24-U2-000150_rule The Apache web server must produce log records containing sufficient information to establish the identity of any user/subject or process associated with an event.

Vulnerability discussion

Apache web server logging capability is critical for accurate forensic analysis. Without sufficient and accurate information, a correct replay of the events cannot be determined. Ascertaining the success or failure of an event is important during forensic analysis. Correctly determining the outcome will add information to the overall reconstruction of the logable event. By determining the success or failure of the event correctly, analysis of the enterprise can be undertaken to determine if events tied to the event occurred in other areas within the enterprise. Without sufficient information establishing the success or failure of the logged event, investigation into the cause of event is severely hindered. The success or failure also provides a means to measure the impact of an event and help authorized personnel to determine the appropriate response. Log record content that may be necessary to satisfy the requirement of this control includes but is not limited to time stamps, source and destination IP addresses, user/process identifiers, event descriptions, application-specific events, success/fail indications, file names involved, access control, and flow control rules invoked.

Check content

In a command line, run "httpd -M | grep -i ssl_module". If the "ssl_module" is not enabled, this is a finding. 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" Search for the directive "SSLProtocol" in the "httpd.conf" file: # cat //httpd.conf | grep -i "SSLProtocol" If the "SSLProtocol" directive is missing or does not look like the following, this is a finding: SSLProtocol -ALL +TLSv1.2 If the TLS version is not TLS 1.2 or higher, according to NIST SP 800-52 Rev 2, or if non-FIPS-approved algorithms are enabled, this is a finding. NOTE: In some cases, web servers are configured in an environment to support load balancing. This configuration most likely uses a content switch to control traffic to the various web servers. In this situation, the TLS certificate for the websites may be installed on the content switch versus the individual websites. This solution is acceptable as long as the web servers are isolated from the general population LAN. Users should not have the ability to bypass the content switch to access the websites.

Fix text

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" Ensure the "SSLProtocol" is added and looks like the following: SSLProtocol -ALL +TLSv1.2 Restart Apache: apachectl restart

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