Access of Resource Using Incompatible Type ('Type Confusion') Affecting firefox package, versions <66.0.1+build1-0ubuntu1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
69.16% (99th percentile)

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  • Snyk IDSNYK-UBUNTU1910-FIREFOX-581466
  • published25 Mar 2019
  • disclosed26 Apr 2019

Introduced: 25 Mar 2019

CVE-2019-9813  (opens in a new tab)
CWE-843  (opens in a new tab)

How to fix?

Upgrade Ubuntu:19.10 firefox to version 66.0.1+build1-0ubuntu1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Ubuntu. See How to fix? for Ubuntu:19.10 relevant fixed versions and status.

Incorrect handling of proto mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.