CVE-2016-5259

Name	CVE-2016-5259
Description	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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
References	DLA-585-1, DSA-3640-1
NVD severity	medium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
firefox (PTS)	sid	61.0-2	fixed
firefox-esr (PTS)	jessie	52.8.1esr-1~deb8u1	fixed
	jessie (security)	52.9.0esr-1~deb8u1	fixed
	stretch, stretch (security)	52.9.0esr-1~deb9u1	fixed
	buster, sid	52.9.0esr-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin
firefox	source	(unstable)	48.0-1	medium
firefox-esr	source	(unstable)	45.3.0esr-1	medium
firefox-esr	source	jessie	45.3.0esr-1~deb8u1	medium	DSA-3640-1
firefox-esr	source	wheezy	45.3.0esr-1~deb7u1	medium	DLA-585-1

https://www.mozilla.org/en-US/security/advisories/mfsa2016-73/