Description
Mozilla Firefox before 3.6.26 and 4.x through 9.0, Thunderbird before 3.1.18 and 5.0 through 9.0, and SeaMonkey before 2.7 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via a malformed XSLT stylesheet that is embedded in a document.
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 | 2.0.11-10 | DSA-2402-1 |
| Debian 6.0 | icedove | 3.0.11-1+squeeze7 | DSA-2406-1 |
| Debian 6.0 | iceweasel | 3.5.16-12 | DSA-2400-1 |
| Debian 5.0 | xulrunner | 1.9.0.19-16 | DSA-2400-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | firefox | 3.6.26-1.el6_2 | RHSA-2012:0079 |
| RHEL 6 | thunderbird | 3.1.18-1.el6_2 | RHSA-2012:0080 |
| RHEL 6 | xulrunner +1 | 1.9.2.26-1.el6_2 | RHSA-2012:0079 |
| RHEL 5 | firefox | 3.6.26-1.el5_7 | RHSA-2012:0079 |
| RHEL 5 | xulrunner +1 | 1.9.2.26-1.el5_7 | RHSA-2012:0079 |
| RHEL 4 | firefox | 3.6.26-2.el4 | RHSA-2012:0079 |
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 8
- RHSA-2012:0079 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:0080 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2400-1 iceweasel - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2402-1 iceape - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2406-1 icedove - several 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/2012/mfsa2012-08.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=701806
- mozilla-xsltstylesheets-code-execution(72868) vdb-entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=702466
- DSA-2402 vendor-advisory
- DSA-2400 vendor-advisory
- SUSE-SU-2012:0198 vendor-advisory
- MDVSA-2012:013 vendor-advisory
- oval:org.mitre.oval:def:14618 vdb-entry signature
- DSA-2406 vendor-advisory
- SUSE-SU-2012:0221 vendor-advisory
- 51754 vdb-entry
- openSUSE-SU-2012:0234 vendor-advisory