This script is Copyright (C) 2017 Tenable Network Security, Inc.
The remote FreeBSD host is missing a security-related update.
The Mozilla Foundation reports :
An integer overflow in createImageBitmap() was reported through the
Pwn2Own contest. The fix for this vulnerability disables the
experimental extensions to the createImageBitmap API. This function
runs in the content sandbox, requiring a second vulnerability to
compromise a user's computer.
See also :
Update the affected package.
Risk factor :