Application user name must be logged.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-222985	TCAT-AS-001080	SV-222985r879720_rule		Low

Description
The access logfile format is defined within a Valve that implements the org.apache.catalina.valves.AccessLogValve interface within the /opt/tomcat/server.xml configuration file: The %u pattern code is included in the pattern element and logs the username used to authenticate to an application. Including the username pattern in the log configuration provides useful information about the application user who is logging in, which is critical for troubleshooting and forensic investigations.

Description

The access logfile format is defined within a Valve that implements the org.apache.catalina.valves.AccessLogValve interface within the /opt/tomcat/server.xml configuration file: The %u pattern code is included in the pattern element and logs the username used to authenticate to an application. Including the username pattern in the log configuration provides useful information about the application user who is logging in, which is critical for troubleshooting and forensic investigations.

STIG	Date
Apache Tomcat Application Server 9 Security Technical Implementation Guide	2023-06-05

Details

Check Text ( C-24657r426399_chk )
As an elevated user on the Tomcat server: Edit the $CATALINA_BASE/conf/server.xml file. Review all "Valve" elements. If the pattern= statement does not include %u, this is a finding. EXAMPLE: unpackWARs="true" autoDeploy="false"> ... prefix="localhost_access_log" suffix=".txt" pattern="%h %l %t %u "%r" %s %b" /> ...

Fix Text (F-24646r426400_fix)
As a privileged user on the Tomcat server: Edit the $CATALINA_BASE/conf/server.xml file. Modify the element that is nested beneath the element. Change the AccessLogValve setting to include %u in the pattern= statement. EXAMPLE: unpackWARs="true" autoDeploy="false"> ... prefix="localhost_access_log" suffix=".txt" pattern="%h %l %t %u "%r" %s %b" /> ... Restart the Tomcat server: sudo systemctl restart tomcat sudo systemctl daemon-reload

Fix Text (F-24646r426400_fix)

As a privileged user on the Tomcat server:

Edit the $CATALINA_BASE/conf/server.xml file.

Modify the element that is nested beneath the element. Change the AccessLogValve setting to include %u in the pattern= statement.

EXAMPLE:
unpackWARs="true" autoDeploy="false">
...
prefix="localhost_access_log" suffix=".txt"
pattern="%h %l %t %u "%r" %s %b" />
...

Restart the Tomcat server:
sudo systemctl restart tomcat
sudo systemctl daemon-reload