The vCenter VAMI service must enable Content Security Policy.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-259160	VCLD-80-000102	SV-259160r935384_rule		Medium

Description
A Content Security Policy (CSP) requires careful tuning and precise definition of the policy. If enabled, CSP has significant impact on the way browsers render pages (e.g., inline JavaScript is disabled by default and must be explicitly allowed in the policy). CSP prevents a wide range of attacks, including cross-site scripting and other cross-site injections.

STIG	Date
VMware vSphere 8.0 vCenter Appliance Management Interface (VAMI) Security Technical Implementation Guide	2023-10-29

Details

Check Text ( C-62900r935382_chk )
At the command prompt, run the following command: # /opt/vmware/sbin/vami-lighttpd -p -f /opt/vmware/etc/lighttpd/lighttpd.conf 2>/dev/null\|awk '/setenv\.add-response-header/,/\)/'\|sed -e 's/^[ ]*//'\|grep "Content-Security-Policy" Expected result: "Content-Security-Policy" => "default-src 'self'; img-src 'self' data: https://vcsa.vmware.com; font-src 'self' data:; object-src 'none'; style-src 'self' 'unsafe-inline'", If the output does not match the expected result, this is a finding. Note: The command must be run from a bash shell and not from a shell generated by the "appliance shell". Use the "chsh" command to change the shell for the account to "/bin/bash". Refer to KB Article 2100508 for more details: https://kb.vmware.com/s/article/2100508

Check Text ( C-62900r935382_chk )

At the command prompt, run the following command:

# /opt/vmware/sbin/vami-lighttpd -p -f /opt/vmware/etc/lighttpd/lighttpd.conf 2>/dev/null|awk '/setenv\.add-response-header/,/\)/'|sed -e 's/^[ ]*//'|grep "Content-Security-Policy"

Expected result:

"Content-Security-Policy" => "default-src 'self'; img-src 'self' data: https://vcsa.vmware.com; font-src 'self' data:; object-src 'none'; style-src 'self' 'unsafe-inline'",

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

Note: The command must be run from a bash shell and not from a shell generated by the "appliance shell". Use the "chsh" command to change the shell for the account to "/bin/bash". Refer to KB Article 2100508 for more details:

https://kb.vmware.com/s/article/2100508

Fix Text (F-62809r935383_fix)
Navigate to and open: /etc/applmgmt/appliance/lighttpd.conf Locate the "setenv.add-response-header" parameter and add or update the following value: "Content-Security-Policy" => "default-src 'self'; img-src 'self' data: https://vcsa.vmware.com; font-src 'self' data:; object-src 'none'; style-src 'self' 'unsafe-inline'", Note: The last line in the parameter does not need a trailing comma. Restart the service with the following command: # vmon-cli --restart applmgmt

Fix Text (F-62809r935383_fix)

Navigate to and open:

/etc/applmgmt/appliance/lighttpd.conf

Locate the "setenv.add-response-header" parameter and add or update the following value:

"Content-Security-Policy" => "default-src 'self'; img-src 'self' data: https://vcsa.vmware.com; font-src 'self' data:; object-src 'none'; style-src 'self' 'unsafe-inline'",

Note: The last line in the parameter does not need a trailing comma.

Restart the service with the following command:

# vmon-cli --restart applmgmt