Description
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 43.0 and Firefox ESR 38.x before 38.5 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.
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 8 | icedove | 38.5.0-1~deb8u1 | DSA-3432-1 |
| Debian 8 | iceweasel | 38.5.0esr-1~deb8u2 | DSA-3422-1 |
| Debian 7 | icedove | 38.5.0-1~deb7u1 | DSA-3432-1 |
| Debian 7 | iceweasel | 38.5.0esr-1~deb7u2 | DSA-3422-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | firefox | 43.0+build1-0ubuntu0.14.04.1 | USN-2833-1 |
| Ubuntu 14.04 LTS | thunderbird | 1:38.5.1+build2-0ubuntu0.14.04.1 | USN-2859-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | firefox | 38.5.0-3.el7_2 | RHSA-2015:2657 |
| RHEL 7 | thunderbird | 38.5.0-1.el7_2 | RHSA-2016:0001 |
| RHEL 6 | firefox | 38.5.0-2.el6_7 | RHSA-2015:2657 |
| RHEL 6 | thunderbird | 38.5.0-1.el6_7 | RHSA-2016:0001 |
| RHEL 5 | firefox | 38.5.0-2.el5_11 | RHSA-2015:2657 |
| RHEL 5 | thunderbird | 38.5.0-1.el5_11 | RHSA-2016:0001 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | thunderbird | 38.5.0-1.el5_11 | RHSA-2016:0001 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | MozillaFirefox | 38.5.0esr-54.1 | SUSE-SU-2015:2335-1 |
| SLES 12 | MozillaFirefox | 38.5.0esr-54.1 | SUSE-SU-2015:2335-1 |
| SLES 11 SP4 | MozillaFirefox | 38.5.0esr-28.2 | SUSE-SU-2015:2334-1 |
| SLES 11 SP3 | MozillaFirefox | 38.5.0esr-28.2 | SUSE-SU-2015:2334-1 |
| SLES 11 SP2 | MozillaFirefox | 38.5.0esr-28.2 | SUSE-SU-2015:2336-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | MozillaFirefox | 38.5.0esr-54.1 | SUSE-SU-2015:2335-1 |
| SLES for SAP 12 | MozillaFirefox | 38.5.0esr-54.1 | SUSE-SU-2015:2335-1 |
| SLES for SAP 11 SP4 | MozillaFirefox | 38.5.0esr-28.2 | SUSE-SU-2015:2334-1 |
| SLES for SAP 11 SP3 | MozillaFirefox | 38.5.0esr-28.2 | SUSE-SU-2015:2334-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 50.1.0-1.1 | openSUSE-SU-2024:10071-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 45.5.1-1.1 | openSUSE-SU-2024:10230-1 |
| 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 | 38.5.0-3.0.1.el7_2 | ELSA-2015-2657 |
| Oracle Linux 7 | thunderbird | 38.5.0-1.0.1.el7_2 | ELSA-2016-0001 |
Advisories 14
- RHSA-2015:2657 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2016:0001 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-2859-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-2833-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3422-1 iceweasel - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3432-1 icedove - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10230-1 MozillaThunderbird-45.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2336-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2335-1 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-2015:2334-1 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-2016-0001 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 5, 2016
- ELSA-2015-2657 Critical: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Dec 16, 2015
References
- SUSE-SU-2015:2334 vendor-advisory
- http://www.mozilla.org/security/announce/2015/mfsa2015-134.html
- openSUSE-SU-2015:2380 vendor-advisory
- DSA-3432 vendor-advisory
- 79279 vdb-entry
- SUSE-SU-2015:2335 vendor-advisory
- GLSA-201512-10 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1224100
- https://bugzilla.mozilla.org/show_bug.cgi?id=1203135
- openSUSE-SU-2015:2353 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- openSUSE-SU-2015:2406 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- openSUSE-SU-2016:0308 vendor-advisory
- FEDORA-2015-7ab3d3afcf vendor-advisory
- USN-2859-1 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1225250
- USN-2833-1 vendor-advisory
- RHSA-2015:2657 vendor-advisory
- SUSE-SU-2015:2336 vendor-advisory
- openSUSE-SU-2016:0307 vendor-advisory
- FEDORA-2015-51b1105902 vendor-advisory
- 1034426 vdb-entry
- DSA-3422 vendor-advisory