ENFORCE_ENCODING_IN_GET_WRITER must be set to true.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-223005 | SRG-APP-000516-AS-000237 | TCAT-AS-001690 | SV-223005r961863_rule | 2025-02-11 | 3 |
| 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 |
|---|
| From the Tomcat server as a privileged user, run the following command: sudo grep -i enforce_encoding /etc/systemd/system/tomcat.service If there are no results, or if the org.apache.catalina.connector.response.ENFORCE_ENCODING_IN_GET_WRITER is not ="true", this is a finding. |
| ✔️ Fix |
|---|
| From the Tomcat server as a privileged user: Edit the /etc/systemd/system/tomcat.service file, and either add or edit the org.apache.catalina.connector.response.ENFORCE_ENCODING_IN_GET_WRITER setting. Set the org.apache.catalina.connector.response.ENFORCE_ENCODING_IN_GET_WRITER=true EXAMPLE: Environment='CATALINA_OPTS -Dorg.apache.catalina.connector.response.ENFORCE_ENCODING_IN_GET_WRITER=true' Restart the Tomcat server: sudo systemctl restart tomcat sudo systemctl daemon-reload |