Details

This feature indicates whether the user is warned before opening an external application for pre-configured protocols were its behavior is undefined.

Enabling a warning to appear before passing data to an external application mitigates the risk that sensitive information will be made vulnerable to outside threats.

Solution

Perform the following procedure:

* Open the mozilla.cfg file in the installation directory with a text editor

* Add the following lines to mozilla.cfg:

lockPref(“network.protocol-handler.warn-external-default”, true);

Supportive Information

The following resource is also helpful.

• https://workbench.cisecurity.org/files/1158

This security hardening control applies to the following category of controls within NIST 800-53: Configuration Management.This control applies to the following type of system Unix.

References

• 800-53|CM-6b.

Source

• Tenable.com/audits