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Out-of-bounds Write The advisory has been revoked - it doesn't affect any version of package firefox  (opens in a new tab)

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EPSS
0.39% (34th percentile)

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  • Snyk IDSNYK-UBUNTU1604-FIREFOX-614671
  • published10 Sept 2020
  • disclosed18 Oct 2018
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Introduced: 18 Oct 2018

CVE-2018-12379  (opens in a new tab)
CWE-787  (opens in a new tab)

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:16.04.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Ubuntu.

When the Mozilla Updater opens a MAR format file which contains a very long item filename, an out-of-bounds write can be triggered, leading to a potentially exploitable crash. This requires running the Mozilla Updater manually on the local system with the malicious MAR file in order to occur. This vulnerability affects Firefox < 62, Firefox ESR < 60.2, and Thunderbird < 60.2.1.