Description
Use-after-free vulnerability in Mozilla Firefox before 3.5.19 and 3.6.x before 3.6.17, and SeaMonkey before 2.0.14, allows remote attackers to execute arbitrary code via vectors related to OBJECT's mObserverList.
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 6.0 | iceape | 2.0.11-5 | DSA-2227-1 |
| Debian 6.0 | icedove | 3.0.11-1+squeeze2 | DSA-2235-1 |
| Debian 6.0 | iceweasel | 3.5.16-7 | DSA-2228-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | firefox | 3.6.17-1.el6_0 | RHSA-2011:0471 |
| RHEL 6 | xulrunner +1 | 1.9.2.17-4.el6_0 | RHSA-2011:0471 |
| RHEL 5 | firefox | 3.6.17-1.el5_6 | RHSA-2011:0471 |
| RHEL 5 | xulrunner +1 | 1.9.2.17-3.el5_6 | RHSA-2011:0471 |
| RHEL 4 | firefox | 3.6.17-2.el4 | RHSA-2011:0471 |
Advisories 4
- RHSA-2011:0471 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2227-1 iceape - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2228-1 iceweasel - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2235-1 icedove - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- DSA-2228 vendor-advisory
- MDVSA-2011:079 vendor-advisory
- oval:org.mitre.oval:def:13970 vdb-entry signature
- http://www.mozilla.org/security/announce/2011/mfsa2011-13.html
- DSA-2235 vendor-advisory
- DSA-2227 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=634983
- http://downloads.avaya.com/css/P8/documents/100144158