Description
The event-management implementation in Mozilla Firefox before 3.6.20, SeaMonkey 2.x, Thunderbird 3.x before 3.1.12, and possibly other products does not properly select the context for script to run in, which allows remote attackers to bypass the Same Origin Policy or execute arbitrary JavaScript code with chrome privileges via a crafted web site.
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 | 2.0.11-7 | DSA-2295-1 |
| Debian 6.0 | icedove | 3.0.11-1+squeeze4 | DSA-2297-1 |
| Debian 6.0 | iceweasel | 3.5.16-9 | DSA-2296-1 |
| Debian 5.0 | xulrunner | 1.9.0.19-13 | DSA-2296-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | firefox | 3.6.20-2.el6_1 | RHSA-2011:1164 |
| RHEL 6 | xulrunner +1 | 1.9.2.20-2.el6_1 | RHSA-2011:1164 |
| RHEL 5 | firefox | 3.6.20-2.el5 | RHSA-2011:1164 |
| RHEL 5 | xulrunner +1 | 1.9.2.20-2.el5 | RHSA-2011:1164 |
| RHEL 4 | firefox | 3.6.20-2.el4 | RHSA-2011:1164 |
Advisories 4
- RHSA-2011:1164 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2297-1 icedove - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2295-1 iceape - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2296-1 iceweasel - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- MDVSA-2011:127 vendor-advisory
- http://www.mozilla.org/security/announce/2011/mfsa2011-30.html
- DSA-2297 vendor-advisory
- SUSE-SU-2011:0967 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=650252
- DSA-2296 vendor-advisory
- SUSE-SA:2011:037 vendor-advisory
- RHSA-2011:1164 vendor-advisory
- oval:org.mitre.oval:def:14512 vdb-entry signature
- https://bugzilla.mozilla.org/show_bug.cgi?id=614151
- DSA-2295 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=643450