Description
Use-after-free vulnerability in the TypeObject class in the JavaScript engine in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25 allows remote attackers to execute arbitrary code by triggering extensive memory consumption while garbage collection is occurring, as demonstrated by improper handling of BumpChunk objects.
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 | 24.4.0-1~deb7u1 | DSA-2911-1 |
| Debian 7 | iceweasel | 24.4.0esr-1~deb7u2 | DSA-2881-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | firefox +1 | 24.4.0-1.el6_5 | RHSA-2014:0316, RHSA-2014:0310 |
| RHEL 5 | firefox +1 | 24.4.0-1.el5_10 | RHSA-2014:0316, RHSA-2014:0310 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | thunderbird | 24.4.0-1.el5_10 | RHSA-2014:0316 |
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 7
- RHSA-2014:0316 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2014:0310 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-2911-1 icedove - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2881-1 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
- 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
- http://www.mozilla.org/security/announce/2014/mfsa2014-30.html
- RHSA-2014:0310 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=982957
- DSA-2911 vendor-advisory
- GLSA-201504-01 vendor-advisory
- SUSE-SU-2014:0418 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- USN-2151-1 vendor-advisory
- DSA-2881 vendor-advisory
- openSUSE-SU-2014:0419 vendor-advisory
- RHSA-2014:0316 vendor-advisory
- openSUSE-SU-2014:0584 vendor-advisory
- openSUSE-SU-2014:0448 vendor-advisory
- 20140326 VUPEN Security Research - Mozilla Firefox "BumpChunk" Object Processing Use-after-free (Pwn2Own) mailing-list
- 66209 vdb-entry