Critical Firefox 0-Day Under Active Attacks – Update Your Browser Now!

    Date09 Jan 2020
    736
    Posted ByBrittany Day
    Firefox Zero Day Vulnerability

    Attention! Are you using Firefox as your web browsing software on your Windows, Linux, or Mac systems? If yes, you should immediately update your free and open-source Firefox web browser to the latest version available on Mozilla's website. Why the urgency? Mozilla earlier today released Firefox 72.0.1 and Firefox ESR 68.4.1 versions to patch a critical zero-day vulnerability in its browsing software that an undisclosed group of hackers is actively exploiting in the wild. Learn more:

    Tracked as 'CVE-2019-17026,' the bug is a critical 'type confusion vulnerability' that resides in the IonMonkey just-in-time (JIT) compiler of the Mozilla's JavaScript engine SpiderMonkey.

    In general, a type confusion vulnerability occurs when the code doesn't verify what objects it is passed to and blindly uses it without checking its type, allowing attackers to crash the application or achieve code execution.

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