Check: VCUI-67-000025
VMware vSphere 6.7 UI Tomcat STIG:
VCUI-67-000025
(in versions v1 r3 through v1 r2)
Title
vSphere UI must have the debug option turned off. (Cat II impact)
Discussion
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. vSphere UI can be configured to set the debugging level. By setting the debugging level to zero, no debugging information will be provided to a malicious user.
Check Content
At the command prompt, execute the following command: # xmllint --format /usr/lib/vmware-vsphere-ui/server/conf/web.xml | sed 's/xmlns=".*"//g' | xmllint --xpath '//param-name[text()="debug"]/parent::init-param' - Expected result: <init-param> <param-name>debug</param-name> <param-value>0</param-value> </init-param> If no lines are returned, this is not a finding. 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/web.xml. Navigate to all <debug> nodes that are not set to "0". Set the <param-value> to "0" in all <param-name>debug</param-name> nodes. Note: The debug setting should look like the following: <init-param> <param-name>debug</param-name> <param-value>0</param-value> </init-param>
Additional Identifiers
Rule ID: SV-239706r879655_rule
Vulnerability ID: V-239706
Group Title: SRG-APP-000266-WSR-000160
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 |