tc Server HORIZON must have the debug option turned off.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-90103	VRAU-TC-000675	SV-100753r1_rule		Medium

Description
Information needed by an attacker to begin looking for possible vulnerabilities in a web server includes any information about the web server and plug-ins or modules being used. When debugging or trace information is enabled in a production web server, information about the web server, such as web server type, version, patches installed, plug-ins and modules installed, type of code being used by the hosted application, and any backends being used for data storage may be displayed. Since this information may be placed in logs and general messages during normal operation of the web server, an attacker does not need to cause an error condition to gain this information. As a Tomcat derivative, tc Server can be configured to set the debugging level. By setting the debugging level to zero (0), no debugging information will be provided to a malicious user. This provides a layer of defense to vRA.

Description

Information needed by an attacker to begin looking for possible vulnerabilities in a web server includes any information about the web server and plug-ins or modules being used. When debugging or trace information is enabled in a production web server, information about the web server, such as web server type, version, patches installed, plug-ins and modules installed, type of code being used by the hosted application, and any backends being used for data storage may be displayed. Since this information may be placed in logs and general messages during normal operation of the web server, an attacker does not need to cause an error condition to gain this information. As a Tomcat derivative, tc Server can be configured to set the debugging level. By setting the debugging level to zero (0), no debugging information will be provided to a malicious user. This provides a layer of defense to vRA.

STIG	Date
VMware vRealize Automation 7.x tc Server Security Technical Implementation Guide	2018-10-12

Details

Check Text ( C-89795r1_chk )
At the command prompt, execute the following command: grep -En -A 2 -B 1 'debug' /opt/vmware/horizon/workspace/conf/web.xml If all instances of the debug parameter are not set to "0", this is a finding.

Fix Text (F-96845r1_fix)
Navigate to and open /opt/vmware/horizon/workspace/conf/web.xml. Navigate to all nodes that are not set to "0". Set the to "0" in all debug nodes. Note: The debug setting should look like the below: debug 0