Mozilla Firefox STIG Version Comparison
Mozilla Firefox Security Technical Implementation Guide
There are 64 differences between versions v5 r1 (Jan. 22, 2021) (the "left" version) and v6 r1 (Nov. 14, 2021) (the "right" version).
Check FFOX-00-000001 was added to the benchmark in the "right" version.
This check's original form is available here.
The installed version of Firefox must be supported.
Run Firefox. Click the ellipsis button >> Help >> About Firefox, and view the version number. If the Firefox version is not a supported version, this is a finding.
Using versions of an application that are not supported by the vendor is not permitted. Vendors respond to security flaws with updates and patches. These updates are not available for unsupported versions, which can leave the application vulnerable to attack.
Upgrade the version of the browser to an approved version by obtaining software from the vendor or other trusted source.