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Use After Free Affecting firefox-esr package, versions <45.9.0-r0

Severity

 Recommended
0.0
critical
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
2.84% (87th percentile)

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  • Snyk IDSNYK-ALPINE35-FIREFOXESR-468055
  • published22 Sept 2019
  • disclosed22 Sept 2019
  • creditUnknown
Report a new vulnerability Found a mistake?

Introduced: 22 Sep 2019

CVE-2017-5402  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Alpine:3.5 firefox-esr to version 45.9.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-esr package and not the firefox-esr package as distributed by Alpine. See How to fix? for Alpine:3.5 relevant fixed versions and status.

A use-after-free can occur when events are fired for a "FontFace" object after the object has been already been destroyed while working with fonts. This results in a potentially exploitable crash. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.