Description
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 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 | 38.4.0-1~deb8u1 | DSA-3410-1 |
| Debian 8 | iceweasel | 38.4.0esr-1~deb8u1 | DSA-3393-1 |
| Debian 7 | icedove | 38.4.0-1~deb7u1 | DSA-3410-1 |
| Debian 7 | iceweasel | 38.4.0esr-1~deb7u1 | DSA-3393-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | firefox | 42.0+build2-0ubuntu0.14.04.1 | USN-2785-1 |
| Ubuntu 14.04 LTS | thunderbird | 1:38.4.0+build3-0ubuntu0.14.04.1 | USN-2819-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | firefox | 38.4.0-1.el7_1 | RHSA-2015:1982 |
| RHEL 7 | thunderbird | 38.4.0-1.el7_2 | RHSA-2015:2519 |
| RHEL 6 | firefox +1 | 38.4.0-1.el6_7 | RHSA-2015:2519, RHSA-2015:1982 |
| RHEL 5 | firefox +1 | 38.4.0-1.el5_11 | RHSA-2015:2519, RHSA-2015:1982 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | thunderbird | 38.4.0-1.el5_11 | RHSA-2015:2519 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | MozillaFirefox | 38.4.0esr-51.1 | SUSE-SU-2015:1926-1 |
| SLES 12 | MozillaFirefox-branding-SLE | 31.0-17.1 | SUSE-SU-2015:1926-1 |
| SLES 12 | mozilla-nspr | 4.10.10-9.1 | SUSE-SU-2015:1926-1 |
| SLES 12 | mozilla-nss | 3.19.2.1-29.1 | SUSE-SU-2015:1926-1 |
| SLES 11 SP4 | MozillaFirefox | 38.4.0esr-25.6 | SUSE-SU-2015:1981-1 |
| SLES 11 SP4 | MozillaFirefox-branding-SLED | 38-15.31 | SUSE-SU-2015:1981-1 |
| SLES 11 SP4 | mozilla-nspr | 4.10.10-16.1 | SUSE-SU-2015:1981-1 |
| SLES 11 SP4 | mozilla-nss | 3.19.2.1-19.3 | SUSE-SU-2015:1981-1 |
| SLES 11 SP3 | MozillaFirefox | 38.4.0esr-25.6 | SUSE-SU-2015:1981-1 |
| SLES 11 SP3 | MozillaFirefox-branding-SLED | 38-15.31 | SUSE-SU-2015:1981-1 |
| SLES 11 SP3 | mozilla-nspr | 4.10.10-16.1 | SUSE-SU-2015:1981-1 |
| SLES 11 SP3 | mozilla-nss | 3.19.2.1-19.3 | SUSE-SU-2015:1981-1 |
| SLES 11 SP2 | MozillaFirefox | 38.4.0esr-25.3 | SUSE-SU-2015:1978-1 |
| SLES 11 SP2 | MozillaFirefox-branding-SLED | 38-12.19 | SUSE-SU-2015:1978-1 |
| SLES 11 SP2 | mozilla-nspr | 4.10.10-16.1 | SUSE-SU-2015:1978-1 |
| SLES 11 SP2 | mozilla-nss | 3.19.2.1-12.1 | SUSE-SU-2015:1978-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | MozillaFirefox | 38.4.0esr-51.1 | SUSE-SU-2015:1926-1 |
| SLES for SAP 12 | MozillaFirefox-branding-SLE | 31.0-17.1 | SUSE-SU-2015:1926-1 |
| SLES for SAP 12 | mozilla-nspr | 4.10.10-9.1 | SUSE-SU-2015:1926-1 |
| SLES for SAP 12 | mozilla-nss | 3.19.2.1-29.1 | SUSE-SU-2015:1926-1 |
| SLES for SAP 11 SP4 | MozillaFirefox | 38.4.0esr-25.6 | SUSE-SU-2015:1981-1 |
| SLES for SAP 11 SP4 | MozillaFirefox-branding-SLED | 38-15.31 | SUSE-SU-2015:1981-1 |
| SLES for SAP 11 SP4 | mozilla-nspr | 4.10.10-16.1 | SUSE-SU-2015:1981-1 |
| SLES for SAP 11 SP4 | mozilla-nss | 3.19.2.1-19.3 | SUSE-SU-2015:1981-1 |
| SLES for SAP 11 SP3 | MozillaFirefox | 38.4.0esr-25.6 | SUSE-SU-2015:1981-1 |
| SLES for SAP 11 SP3 | MozillaFirefox-branding-SLED | 38-15.31 | SUSE-SU-2015:1981-1 |
| SLES for SAP 11 SP3 | mozilla-nspr | 4.10.10-16.1 | SUSE-SU-2015:1981-1 |
| SLES for SAP 11 SP3 | mozilla-nss | 3.19.2.1-19.3 | SUSE-SU-2015:1981-1 |
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 | 38.4.0-1.0.1.el7_1 | ELSA-2015-1982 |
| Oracle Linux 7 | thunderbird | 38.4.0-1.0.1.el7_2 | ELSA-2015-2519 |
Advisories 14
- RHSA-2015:2519 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2015:1982 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-2819-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-2785-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3410-1 icedove - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3393-1 iceweasel - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2015:1981-1 Security update for MozillaFirefox, mozilla-nspr, mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10230-1 MozillaThunderbird-45.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1978-1 Security update for MozillaFirefox, mozilla-nspr, mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1926-1 Security update for MozillaFirefox, mozilla-nspr, mozilla-nss 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
- openSUSE-SU-2024:10071-1 MozillaFirefox-50.1.0-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- ELSA-2015-2519 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 27, 2015
- ELSA-2015-1982 Critical: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 4, 2015
References
- 1034069 vdb-entry
- DSA-3410 vendor-advisory
- SUSE-SU-2015:2081 vendor-advisory
- GLSA-201512-10 vendor-advisory
- 77411 vdb-entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1193038
- SUSE-SU-2015:1981 vendor-advisory
- openSUSE-SU-2015:2229 vendor-advisory
- RHSA-2015:2519 vendor-advisory
- USN-2785-1 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1107011
- SUSE-SU-2015:1926 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1204700
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=1204669
- https://bugzilla.mozilla.org/show_bug.cgi?id=1208665
- RHSA-2015:1982 vendor-advisory
- USN-2819-1 vendor-advisory
- openSUSE-SU-2015:1942 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1206564
- DSA-3393 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1191942
- openSUSE-SU-2015:2245 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1204580
- https://bugzilla.mozilla.org/show_bug.cgi?id=1209471
- http://www.mozilla.org/security/announce/2015/mfsa2015-116.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=1205707
- https://bugzilla.mozilla.org/show_bug.cgi?id=1213979
- SUSE-SU-2015:1978 vendor-advisory