Description
Double free vulnerability in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey before 1.1.15 allows remote attackers to execute arbitrary code via "cloned XUL DOM elements which were linked as a parent and child," which are not properly handled during garbage collection.
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 5.0 | xulrunner | 1.9.0.7-0lenny1 | DSA-1751-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | firefox | 3.0.7-1.el5 | RHSA-2009:0315 |
| RHEL 5 | thunderbird | 2.0.0.21-1.el5 | RHSA-2009:0258 |
| RHEL 5 | xulrunner +2 | 1.9.0.7-1.el5 | RHSA-2009:0315 |
| RHEL 4 | firefox | 3.0.7-1.el4 | RHSA-2009:0315 |
| RHEL 4 | seamonkey +5 | 1.0.9-38.el4 | RHSA-2009:0325 |
| RHEL 4 | thunderbird | 1.5.0.12-19.el4 | RHSA-2009:0258 |
| RHEL 3 | seamonkey +9 | 1.0.9-0.34.el3 | RHSA-2009:0325 |
| RHEL 2 | seamonkey +9 | 1.0.9-0.30.el2 | RHSA-2009:0325 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | thunderbird | 2.0.0.21-1.el5 | RHSA-2009:0258 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 50.1.0-1.1 | openSUSE-SU-2024:10071-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
Advisories 6
- RHSA-2009:0315 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2009:0325 Red Hat Security Advisory: seamonkey security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2009:0258 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1751-1 xulrunner - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 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-2009:0315 vendor-advisory
- SUSE-SA:2009:012 vendor-advisory
- ADV-2009-0632 vdb-entry
- 1021796 vdb-entry
- oval:org.mitre.oval:def:9681 vdb-entry signature
- oval:org.mitre.oval:def:5806 vdb-entry signature
- DSA-1751 vendor-advisory
- RHSA-2009:0325 vendor-advisory
- oval:org.mitre.oval:def:7584 vdb-entry signature
- RHSA-2009:0258 vendor-advisory
- 34140 third-party-advisory
- 34272 third-party-advisory
- 34417 third-party-advisory
- http://www.mozilla.org/security/announce/2009/mfsa2009-08.html
- 34145 third-party-advisory
- FEDORA-2009-2882 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=474456
- FEDORA-2009-2884 vendor-advisory
- 34137 third-party-advisory
- http://support.avaya.com/elmodocs2/security/ASA-2009-069.htm
- oval:org.mitre.oval:def:6207 vdb-entry signature
- 34324 third-party-advisory
- MDVSA-2009:075 vendor-advisory
- 33990 vdb-entry
- oval:org.mitre.oval:def:5816 vdb-entry signature
- 34383 third-party-advisory
- http://support.avaya.com/japple/css/japple?temp.documentID=366362&temp.productID=154235&temp.releaseID=361845&temp.bucketID=126655&PAGE=Document