CVE-2016-5259

Name of the Vulnerable Software and Affected Versions Mozilla Firefox versions prior to 48.0 Firefox ESR 45.x versions prior to 45.3

Description The issue is related to a use-after-free vulnerability in the CanonicalizeXPCOMParticipant function. This vulnerability can be exploited by a remote attacker to execute arbitrary code via a script that closes its own Service Worker within a nested sync event loop.

Recommendations For Mozilla Firefox versions prior to 48.0, update to version 48.0 or later. For Firefox ESR 45.x versions prior to 45.3, update to version 45.3 or later.