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The vCenter Perfcharts service must set URIEncoding to UTF-8.


Finding ID Version Rule ID IA Controls Severity
V-259081 VCPF-80-000065 SV-259081r934901_rule Medium
Invalid user input occurs when a user inserts data or characters into a hosted application's data entry field and the hosted application is unprepared to process that data. This results in unanticipated application behavior, potentially leading to an application compromise. Invalid user input is one of the primary methods employed when attempting to compromise an application. An attacker can also enter Unicode characters into hosted applications in an effort to break out of the document home or root home directory or bypass security checks.
VMware vSphere 8.0 vCenter Appliance Perfcharts Security Technical Implementation Guide 2023-10-29


Check Text ( C-62821r934899_chk )
At the command prompt, run the following command:

# xmllint --xpath "//Connector[@URIEncoding != 'UTF-8'] | //Connector[not[@URIEncoding]]" /usr/lib/vmware-perfcharts/tc-instance/conf/server.xml

Expected result:

XPath set is empty

If any connectors are returned, this is a finding.
Fix Text (F-62730r934900_fix)
Navigate to and open:


Configure the node with the value:


Restart the service with the following command:

# vmon-cli --restart perfcharts