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Out-of-bounds Write Affecting firefox package, versions <63.0+build1-0ubuntu1

Severity

 Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
3.39% (92nd percentile)

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  • Snyk IDSNYK-UBUNTU2104-FIREFOX-1270272
  • published28 Oct 2018
  • disclosed28 Feb 2019
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Introduced: 28 Oct 2018

CVE-2018-12393  (opens in a new tab)
CWE-787  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Ubuntu:21.04 firefox to version 63.0+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:21.04 relevant fixed versions and status.

A potential vulnerability was found in 32-bit builds where an integer overflow during the conversion of scripts to an internal UTF-16 representation could result in allocating a buffer too small for the conversion. This leads to a possible out-of-bounds write. Note: 64-bit builds are not vulnerable to this issue.. This vulnerability affects Firefox < 63, Firefox ESR < 60.3, and Thunderbird < 60.3.

References