Performance Charts must be configured to show error pages with minimal information.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-239424	VCPF-67-000023	SV-239424r816590_rule		Medium

Description
Web servers will often display error messages to client users, including enough information to aid in the debugging of the error. The information given back in error messages may display the 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. This information could be used by an attacker to blueprint what type of attacks might be successful. Therefore, Performance Charts must be configured with a catch-all error handler that redirects to a standard "error.jsp".

Description

Web servers will often display error messages to client users, including enough information to aid in the debugging of the error. The information given back in error messages may display the 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. This information could be used by an attacker to blueprint what type of attacks might be successful. Therefore, Performance Charts must be configured with a catch-all error handler that redirects to a standard "error.jsp".

STIG	Date
VMware vSphere 6.7 Perfcharts Tomcat Security Technical Implementation Guide	2022-01-03

Details

Check Text ( C-42657r816589_chk )
At the command prompt, execute the following command: # xmllint --format /usr/lib/vmware-perfcharts/tc-instance/webapps/statsreport/WEB-INF/web.xml \| sed '2 s/xmlns=".*"//g' \| xmllint --xpath '/web-app/error-page/exception-type["text()=java.lang.Throwable"]/parent::error-page' - Expected result: java.lang.Throwable /http_error.jsp If the output does not match the expected result, this is a finding.

Check Text ( C-42657r816589_chk )

At the command prompt, execute the following command:

# xmllint --format /usr/lib/vmware-perfcharts/tc-instance/webapps/statsreport/WEB-INF/web.xml | sed '2 s/xmlns=".*"//g' | xmllint --xpath '/web-app/error-page/exception-type["text()=java.lang.Throwable"]/parent::error-page' -

Expected result:

java.lang.Throwable

/http_error.jsp

If the output does not match the expected result, this is a finding.

Fix Text (F-42616r674994_fix)
Navigate to and open /usr/lib/vmware-perfcharts/tc-instance/webapps/statsreport/WEB-INF/web.xml. Add the following section under the node: java.lang.Throwable /error.jsp