Description
The watch implementation in the JavaScript engine in Mozilla Firefox before 46.0, Firefox ESR 38.x before 38.8, and Firefox ESR 45.x before 45.1 allows remote attackers to execute arbitrary code or cause a denial of service (generation-count overflow, out-of-bounds HashMap write access, and application crash) via a crafted web site.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | firefox-esr | 45.1.0esr-1 | — |
| Debian 13 | firefox-esr | 45.1.0esr-1 | — |
| Debian 12 | firefox-esr | 45.1.0esr-1 | — |
| Debian 8 | iceweasel | 38.8.0esr-1~deb8u1 | DSA-3559-1 |
| Debian 7 | iceweasel | 38.8.0esr-1~deb7u1 | DSA-3559-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | firefox | 46.0+build5-0ubuntu0.16.04.2 | USN-2936-1 |
| Ubuntu 14.04 LTS | firefox | 46.0+build5-0ubuntu0.14.04.2 | USN-2936-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | firefox | 45.1.0-1.el7_2 | RHSA-2016:0695 |
| RHEL 6 | firefox | 45.1.0-1.el6_7 | RHSA-2016:0695 |
| RHEL 5 | firefox | 45.1.0-1.el5_11 | RHSA-2016:0695 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | MozillaFirefox | 38.8.0esr-66.2 | SUSE-SU-2016:1258-1 |
| SLES 12 | MozillaFirefox | 38.8.0esr-66.2 | SUSE-SU-2016:1258-1 |
| SLES 11 SP4 | MozillaFirefox | 38.8.0esr-40.5 | SUSE-SU-2016:1374-1 |
| SLES 11 SP4 | mozilla-nspr | 4.12-26.1 | SUSE-SU-2016:1374-1 |
| SLES 11 SP4 | mozilla-nss | 3.20.2-30.1 | SUSE-SU-2016:1374-1 |
| SLES 11 SP3 | MozillaFirefox | 38.8.0esr-40.5 | SUSE-SU-2016:1374-1 |
| SLES 11 SP3 | mozilla-nspr | 4.12-26.1 | SUSE-SU-2016:1374-1 |
| SLES 11 SP3 | mozilla-nss | 3.20.2-30.1 | SUSE-SU-2016:1374-1 |
| SLES 11 SP2 | MozillaFirefox | 38.8.0esr-40.1 | SUSE-SU-2016:1342-1 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | MozillaFirefox | 38.8.0esr-66.2 | SUSE-SU-2016:1258-1 |
| SLES for SAP 12 | MozillaFirefox | 38.8.0esr-66.2 | SUSE-SU-2016:1258-1 |
| SLES for SAP 11 SP4 | MozillaFirefox | 38.8.0esr-40.5 | SUSE-SU-2016:1374-1 |
| SLES for SAP 11 SP4 | mozilla-nspr | 4.12-26.1 | SUSE-SU-2016:1374-1 |
| SLES for SAP 11 SP4 | mozilla-nss | 3.20.2-30.1 | SUSE-SU-2016:1374-1 |
| SUSE OpenStack Cloud 5 | MozillaFirefox | 38.8.0esr-40.5 | SUSE-SU-2016:1374-1 |
| SUSE OpenStack Cloud 5 | mozilla-nspr | 4.12-26.1 | SUSE-SU-2016:1374-1 |
| SUSE OpenStack Cloud 5 | mozilla-nss | 3.20.2-30.1 | SUSE-SU-2016:1374-1 |
| SUSE Manager Proxy 2.1 | MozillaFirefox | 38.8.0esr-40.5 | SUSE-SU-2016:1374-1 |
| SUSE Manager Proxy 2.1 | mozilla-nspr | 4.12-26.1 | SUSE-SU-2016:1374-1 |
| SUSE Manager Proxy 2.1 | mozilla-nss | 3.20.2-30.1 | SUSE-SU-2016:1374-1 |
| SUSE Manager 2.1 | MozillaFirefox | 38.8.0esr-40.5 | SUSE-SU-2016:1374-1 |
| SUSE Manager 2.1 | mozilla-nspr | 4.12-26.1 | SUSE-SU-2016:1374-1 |
| SUSE Manager 2.1 | mozilla-nss | 3.20.2-30.1 | SUSE-SU-2016:1374-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 50.1.0-1.1 | openSUSE-SU-2024:10071-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | firefox | 45.1.0-1.0.1.el7_2 | ELSA-2016-0695 |
Advisories 9
- RHSA-2016:0695 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-2936-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3559-1 iceweasel - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2016:1342-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1374-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14572-1 firefox-esr-128.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1258-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10071-1 MozillaFirefox-50.1.0-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- ELSA-2016-0695 Critical: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 26, 2016
References
- openSUSE-SU-2016:1211 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- RHSA-2016:0695 vendor-advisory
- 1035692 vdb-entry
- SUSE-SU-2016:1374 vendor-advisory
- openSUSE-SU-2016:1251 vendor-advisory
- USN-2936-2 vendor-advisory
- SUSE-SU-2016:1352 vendor-advisory
- http://www.mozilla.org/security/announce/2016/mfsa2016-47.html
- GLSA-201701-15 vendor-advisory
- DSA-3559 vendor-advisory
- USN-2936-1 vendor-advisory
- USN-2936-3 vendor-advisory
- SUSE-SU-2016:1258 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1246061