Detections
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CVE-2019-17026
high
Description
Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 68.4.1, Thunderbird < 68.4.1, and Firefox < 72.0.1.
From the Tenable Blog
CVE-2019-17026: Zero-Day Vulnerability in Mozilla Firefox Exploited in Targeted Attacks
Published: 2020-01-08
Mozilla releases patch to address Firefox flaw being used as part of targeted attacks. Background On January 8, Mozilla Foundation released a security advisory to address a critical zero-day flaw in Mozilla Firefox, which has been exploited in targeted attacks.
References
https://www.tenable.com/blog/how-covid-19-response-is-expanding-the-cyberattack-surface
https://www.mozilla.org/security/advisories/mfsa2020-04/
https://www.mozilla.org/security/advisories/mfsa2020-03/
https://usn.ubuntu.com/4335-1/
https://security.gentoo.org/glsa/202003-02
https://bugzilla.mozilla.org/show_bug.cgi?id=1607443
http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.html