Description
The nsXBLProtoImpl::InstallImplementation function in Mozilla Firefox before 29.0, Firefox ESR 24.x before 24.5, Thunderbird before 24.5, and SeaMonkey before 2.26 does not properly check whether objects are XBL objects, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow) via crafted JavaScript code that accesses a non-XBL object as if it were an XBL object.
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 7 | icedove | 24.5.0-1~deb7u1 | DSA-2924-1 |
| Debian 7 | iceweasel | 24.5.0esr-1~deb7u1 | DSA-2918-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | firefox | 29.0+build1-0ubuntu0.14.04.2 | USN-2185-1 |
| Ubuntu 14.04 LTS | thunderbird | 1:24.5.0+build1-0ubuntu0.14.04.1 | USN-2189-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | firefox +1 | 24.5.0-1.el6_5 | RHSA-2014:0449, RHSA-2014:0448 |
| RHEL 5 | firefox +1 | 24.5.0-1.el5_10 | RHSA-2014:0449, RHSA-2014:0448 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | thunderbird | 24.5.0-1.el5_10 | RHSA-2014:0449 |
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 |
Advisories 9
- RHSA-2014:0448 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2014:0449 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-2189-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-2185-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-2918-1 iceweasel - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2924-1 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
- 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
References
- RHSA-2014:0448 vendor-advisory
- FEDORA-2014-5833 vendor-advisory
- openSUSE-SU-2014:0602 vendor-advisory
- openSUSE-SU-2014:0599 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=989183
- openSUSE-SU-2014:0629 vendor-advisory
- SUSE-SU-2014:0727 vendor-advisory
- http://www.mozilla.org/security/announce/2014/mfsa2014-38.html
- GLSA-201504-01 vendor-advisory
- 1030165 vdb-entry
- 59866 third-party-advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- openSUSE-SU-2014:0640 vendor-advisory
- USN-2189-1 vendor-advisory
- RHSA-2014:0449 vendor-advisory
- 67131 vdb-entry
- SUSE-SU-2014:0665 vendor-advisory
- DSA-2918 vendor-advisory
- DSA-2924 vendor-advisory
- USN-2185-1 vendor-advisory
- 1030164 vdb-entry
- 1030163 vdb-entry
- FEDORA-2014-5829 vendor-advisory