Incorrect Type Conversion or Cast Affecting firefox package, versions <62.0.3+build1-0ubuntu0.16.04.2


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
4.77% (93rd percentile)

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  • Snyk IDSNYK-UBUNTU1604-FIREFOX-423013
  • published9 Oct 2018
  • disclosed18 Oct 2018

Introduced: 9 Oct 2018

CVE-2018-12386  (opens in a new tab)
CWE-704  (opens in a new tab)

How to fix?

Upgrade Ubuntu:16.04 firefox to version 62.0.3+build1-0ubuntu0.16.04.2 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:16.04 relevant fixed versions and status.

A vulnerability in register allocation in JavaScript can lead to type confusion, allowing for an arbitrary read and write. This leads to remote code execution inside the sandboxed content process when triggered. This vulnerability affects Firefox ESR < 60.2.2 and Firefox < 62.0.3.