This script is Copyright (C) 2006-2017 Tenable Network Security, Inc.
A web browser on the remote host may be prone to a denial of service
The installed version of Firefox may allow a malicious site to crash
the browser and potentially to run malicious code when attempting to
use a deleted controller context.
Successful exploitation requires that 'designMode' be turned on.
See also :
Upgrade to Firefox 220.127.116.11 or later.
Risk factor :
Medium / CVSS Base Score : 5.1
CVSS Temporal Score : 4.0
Public Exploit Available : true