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Use After Free Affecting firefox package, versions <48.0+build2-0ubuntu0.16.04.1

Severity

 Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
3.02% (92nd percentile)

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  • Snyk IDSNYK-UBUNTU1604-FIREFOX-424271
  • published5 Aug 2016
  • disclosed5 Aug 2016
Report a new vulnerability Found a mistake?

Introduced: 5 Aug 2016

CVE-2016-5259  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Ubuntu:16.04 firefox to version 48.0+build2-0ubuntu0.16.04.1 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.

Use-after-free vulnerability in the CanonicalizeXPCOMParticipant function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code via a script that closes its own Service Worker within a nested sync event loop.