Details

This will ensure that JavaScript URLs are not displayed in the history bar.

Various browser elements, even a simple link, can embed javascript: URLs and access the javascript: protocol. The JavaScript statement used in a javascript: URL can be used to encapsulate a specially crafted URL that performs a malicious function.

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(“browser.urlbar.filter.javascript”, 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-7b.

Source

• Tenable.com/audits