Check: VCUI-67-000023
VMware vSphere 6.7 UI Tomcat STIG:
VCUI-67-000023
(in versions v1 r3 through v1 r1)
Title
vSphere UI must be configured to show error pages with minimal information. (Cat II impact)
Discussion
Web servers will often display error messages to client users with 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, vSphere UI must be configured to not show server version information in error pages.
Check Content
At the command prompt, execute the following command: # xmllint --format /usr/lib/vmware-vsphere-ui/server/conf/server.xml | xmllint --xpath '/Server/Service/Engine/Host/Valve[@className="org.apache.catalina.valves.ErrorReportValve"]' - Expected result: <Valve className="org.apache.catalina.valves.ErrorReportValve" showServerInfo="false"/> If the output of the command does not match the expected result, this is a finding.
Fix Text
Navigate to and open /usr/lib/vmware-vsphere-ui/server/conf/server.xml. Locate the following Host block: <Host name="localhost"" ...> ... </Host> Inside this block, add the following on a new line: <Valve className="org.apache.catalina.valves.ErrorReportValve" showServerInfo="false"/>
Additional Identifiers
Rule ID: SV-239704r879655_rule
Vulnerability ID: V-239704
Group Title: SRG-APP-000266-WSR-000159
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-001312 |
The information system generates error messages that provide information necessary for corrective actions without revealing information that could be exploited by adversaries. |
Controls
Number | Title |
---|---|
SI-11 |
Error Handling |