Details

This feature determines whether all Internationalized Domain Names (IDNs) displayed in the browser are displayed as Punycode or as Unicode.

IDNs displayed in Punycode are easier to identify and therefore help mitigate the risk of accessing spoofed web pages.

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.IDN_show_punycode”, 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