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Use After Free Affecting thunderbird package, versions <60.6.1+build2-0ubuntu1

Severity

 Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
2.04% (80th percentile)

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  • Snyk IDSNYK-UBUNTU2004-THUNDERBIRD-584028
  • published20 Mar 2019
  • disclosed26 Apr 2019
Report a new vulnerability Found a mistake?

Introduced: 20 Mar 2019

CVE-2019-9796  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 thunderbird to version 60.6.1+build2-0ubuntu1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

A use-after-free vulnerability can occur when the SMIL animation controller incorrectly registers with the refresh driver twice when only a single registration is expected. When a registration is later freed with the removal of the animation controller element, the refresh driver incorrectly leaves a dangling pointer to the driver's observer array. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.