Description
The nsUnicodeToUTF8::GetMaxLength function in Mozilla Firefox before 41.0 and Firefox ESR 38.x before 38.3 might allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via unknown vectors, related to an "overflow."
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 | iceweasel | 38.3.0esr-1~deb8u1 | DSA-3365-1 |
| Debian 7 | iceweasel | 38.3.0esr-1~deb7u1 | DSA-3365-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | firefox | 41.0+build3-0ubuntu0.14.04.1 | USN-2743-1 |
| Ubuntu 14.04 LTS | thunderbird | 1:38.3.0+build1-0ubuntu0.14.04.1 | USN-2754-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | firefox | 38.3.0-2.el7_1 | RHSA-2015:1834 |
| RHEL 7 | thunderbird | 38.3.0-1.ael7b_1 | RHSA-2015:1852 |
| RHEL 6 | firefox | 38.3.0-2.el6_7 | RHSA-2015:1834 |
| RHEL 6 | thunderbird | 38.3.0-1.el6_7 | RHSA-2015:1852 |
| RHEL 5 | firefox | 38.3.0-2.el5_11 | RHSA-2015:1834 |
| RHEL 5 | thunderbird | 38.3.0-1.el5_11 | RHSA-2015:1852 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | thunderbird | 38.3.0-1.el5_11 | RHSA-2015:1852 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | MozillaFirefox | 38.3.0esr-48.1 | SUSE-SU-2015:1680-1 |
| SLES 12 | mozilla-nspr | 4.10.9-6.1 | SUSE-SU-2015:1680-1 |
| SLES 11 SP4 | MozillaFirefox | 38.3.0esr-22.1 | SUSE-SU-2015:1703-1 |
| SLES 11 SP3 | MozillaFirefox | 38.3.0esr-22.1 | SUSE-SU-2015:1703-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | MozillaFirefox | 38.3.0esr-48.1 | SUSE-SU-2015:1680-1 |
| SLES for SAP 12 | mozilla-nspr | 4.10.9-6.1 | SUSE-SU-2015:1680-1 |
| SLES for SAP 11 SP4 | MozillaFirefox | 38.3.0esr-22.1 | SUSE-SU-2015:1703-1 |
| SLES for SAP 11 SP3 | MozillaFirefox | 38.3.0esr-22.1 | SUSE-SU-2015:1703-1 |
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 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | thunderbird | 38.3.0-1.0.1.el7_1 | ELSA-2015-1852 |
Advisories 10
- RHSA-2015:1852 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2015:1834 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- USN-2754-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-2743-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3365-1 iceweasel - 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-2015:1680-1 Security update for MozillaFirefox, mozilla-nspr SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1703-1 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-2015-1852 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 1, 2015
References
- SUSE-SU-2015:1680 vendor-advisory
- SUSE-SU-2015:2081 vendor-advisory
- openSUSE-SU-2015:1681 vendor-advisory
- USN-2754-1 vendor-advisory
- http://www.mozilla.org/security/announce/2015/mfsa2015-112.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=1170794
- USN-2743-4 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- USN-2743-3 vendor-advisory
- RHSA-2015:1834 vendor-advisory
- USN-2743-2 vendor-advisory
- 1033640 vdb-entry
- RHSA-2015:1852 vendor-advisory
- DSA-3365 vendor-advisory
- 76816 vdb-entry
- SUSE-SU-2015:1703 vendor-advisory
- openSUSE-SU-2015:1679 vendor-advisory
- openSUSE-SU-2015:1658 vendor-advisory
- USN-2743-1 vendor-advisory