Improper input validation in Mozilla Firefox - CVE-2018-12368

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to iWindows 10 does not warn users before opening executable files with the SettingContent-msextension even when they have been downloaded from the internet and have the "Mark of the Web". A remote unauthenticated attacker can trick the victim into visiting a specially crafted website, use WebExtension with the limited downloads.openpermission and execute arbitrary code without user interaction on Windows 10 systems

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

How to mitigate CVE-2018-12368

Sources

• https://www.mozilla.org/en-US/security/advisories/mfsa2018-15/