$CATALINA_BASE/work/ folder must be owned by tomcat user, group tomcat.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-222991	TCAT-AS-001280	SV-222991r754846_rule		Medium

Description
Tomcat file permissions must be restricted. The standard configuration is to have all Tomcat files owned by root with group Tomcat. While root has read/write privileges, group only has read permissions, and world has no permissions. The exceptions are the logs, temp, and work directories that are owned by the Tomcat user rather than root. This means that even if an attacker compromises the Tomcat process, they cannot change the Tomcat configuration, deploy new web applications, or modify existing web applications. The Tomcat process runs with a umask of 0027 to maintain these permissions. If operational needs require application administrators to be able to change application configurations, the group permissions can be modified to allow specific application admins the access they require with an ISSM risk acceptance. Ownership may not change.

Description

Tomcat file permissions must be restricted. The standard configuration is to have all Tomcat files owned by root with group Tomcat. While root has read/write privileges, group only has read permissions, and world has no permissions. The exceptions are the logs, temp, and work directories that are owned by the Tomcat user rather than root. This means that even if an attacker compromises the Tomcat process, they cannot change the Tomcat configuration, deploy new web applications, or modify existing web applications. The Tomcat process runs with a umask of 0027 to maintain these permissions. If operational needs require application administrators to be able to change application configurations, the group permissions can be modified to allow specific application admins the access they require with an ISSM risk acceptance. Ownership may not change.

STIG	Date
Apache Tomcat Application Sever 9 Security Technical Implementation Guide	2021-06-15

Details

Check Text ( C-24663r426417_chk )
Access the Tomcat server from the command line and execute the following OS command: sudo find $CATALINA_BASE/work -follow -maxdepth 0 \( ! -user tomcat -o ! -group tomcat \) -ls If ISSM risk acceptance specifies deviation from requirement based on operational/application needs, this is not a finding if the permissions are set in accordance with the risk acceptance. If no folders are displayed, this is not a finding. If results indicate the $CATALINA_BASE/work folder ownership and group membership is not set to tomcat:tomcat, this is a finding.

Check Text ( C-24663r426417_chk )

Access the Tomcat server from the command line and execute the following OS command:

sudo find $CATALINA_BASE/work -follow -maxdepth 0 $ ! -user tomcat -o ! -group tomcat $ -ls

If ISSM risk acceptance specifies deviation from requirement based on operational/application needs, this is not a finding if the permissions are set in accordance with the risk acceptance.

If no folders are displayed, this is not a finding.

If results indicate the $CATALINA_BASE/work folder ownership and group membership is not set to tomcat:tomcat, this is a finding.

Fix Text (F-24652r426418_fix)
If operational/application requirements specify different group file permissions, obtain ISSM risk acceptance and set permissions according to risk acceptance. Run the following commands on the Tomcat server: sudo find $CATALINA_BASE/work -maxdepth 0 $ ! -user tomcat $ \| sudo xargs chown tomcat sudo find $CATALINA_BASE/work -maxdepth 0 $ ! -group tomcat $ \| sudo xargs chgrp tomcat