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V-222985

CAT III (Low)

Application user name must be logged.

Rule ID

SV-222985r961362_rule

STIG

Apache Tomcat Application Server 9 Security Technical Implementation Guide

Version

V3R4

CCIs

CCI-002234

Discussion

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.

Check Content

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:
&lt;Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="false"&gt;
...
&lt;Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
               prefix="localhost_access_log" suffix=".txt"
               pattern="%h %l %t %u &amp;quot;%r&amp;quot; %s %b" /&gt;
  ...
&lt;/Host&gt;

Fix Text

As a privileged user on the Tomcat server:

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

Modify the &lt;Valve&gt; element that is nested beneath the &lt;Host&gt; element. Change the AccessLogValve setting to include %u in the pattern= statement.

EXAMPLE:
&lt;Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="false"&gt;
...
&lt;Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
               prefix="localhost_access_log" suffix=".txt"
               pattern="%h %l %t %u &amp;quot;%r&amp;quot; %s %b" /&gt;
  ...
&lt;/Host&gt;

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