The vCenter ESX Agent Manager service must enable "ENFORCE_ENCODING_IN_GET_WRITER".
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-259034 | SRG-APP-000516-AS-000237 | VCEM-80-000152 | SV-259034r961863_rule | 2024-12-16 | 2 |
Description
Some clients try to guess the character encoding of text media when the mandated default of ISO-8859-1 should be used. Some browsers will interpret as UTF-7 when the characters are safe for ISO-8859-1. This can create the potential for a XSS attack. To defend against this, enforce_encoding_in_get_writer must be set to true.
ℹ️ Check
At the command line, run the following command:
# grep ENFORCE_ENCODING_IN_GET_WRITER /etc/vmware-eam/catalina.properties
Example result:
org.apache.catalina.connector.response.ENFORCE_ENCODING_IN_GET_WRITER=true
If "org.apache.catalina.connector.response.ENFORCE_ENCODING_IN_GET_WRITER" is not set to "true", this is a finding.
If the "org.apache.catalina.connector.response.ENFORCE_ENCODING_IN_GET_WRITER" setting does not exist, this is not a finding.
✔️ Fix
Navigate to and open:
/etc/vmware-eam/catalina.properties
Update or remove the following line:
org.apache.catalina.connector.response.ENFORCE_ENCODING_IN_GET_WRITER=true
Restart the service with the following command:
# vmon-cli --restart eam