Detections
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AS24-U1-000520 - The Apache web server must generate a session ID using as much of the character set as possible to reduce the risk of brute force.
Information
Generating a session identifier (ID) that is not easily guessed through brute force is essential to deter several types of session attacks. By knowing the session ID, an attacker can hijack a user session that has already been user-authenticated by the hosted application. The attacker does not need to guess user identifiers and passwords or have a secure token since the user session has already been authenticated.By generating session IDs that contain as much of the character set as possible, i.e., A-Z, a-z, and 0-9, the session ID becomes exponentially harder to guess.
Satisfies: SRG-APP-000223-WSR-000145, SRG-APP-000224-WSR-000135, SRG-APP-000224-WSR-000136, SRG-APP-000224-WSR-000138
Solution
Determine the location of the 'HTTPD_ROOT' directory and the 'httpd.conf' file:# apachectl -V | egrep -i 'httpd_root|server_config_file'
-D HTTPD_ROOT='/etc/httpd'
-D SERVER_CONFIG_FILE='conf/httpd.conf'
Load the 'unique_id_module'.
Example: LoadModule unique_id_module modules/mod_unique_id.so
Restart Apache: apachectl restart
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Apache_Server_2-4_Unix_Y25M04_STIG.zip
Item Details
Audit Name: DISA STIG Apache Server 2.4 Unix Server v3r2
Category: SYSTEM AND COMMUNICATIONS PROTECTION
References: 800-53|SC-23(3), CAT|I, CCI|CCI-001188, CCI|CCI-001664, Rule-ID|SV-214253r1043181_rule, STIG-ID|AS24-U1-000520, STIG-Legacy|SV-102777, STIG-Legacy|V-92689, Vuln-ID|V-214253
Plugin: Unix
Control ID: 3c5e2d7bce2badb0e9a861e4f05c0617ee52c62a7d912c76ce67137f22cbf708