Description
Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 do not properly iterate through the characters in a text run, which allows remote attackers to execute arbitrary code via a crafted 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 | 2.0.11-15 | DSA-2554-1 |
| Debian 6.0 | icedove | 3.0.11-1+squeeze13 | DSA-2556-1 |
| Debian 6.0 | iceweasel | 3.5.16-18 | DSA-2553-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | firefox +3 | 10.0.7-1.el6_3 | RHSA-2012:1211, RHSA-2012:1210 |
| RHEL 5 | firefox +1 | 10.0.7-1.el5_8 | RHSA-2012:1211, RHSA-2012:1210 |
| RHEL 5 | xulrunner +1 | 10.0.7-2.el5_8 | RHSA-2012:1210 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | thunderbird | 10.0.7-1.el5_8 | RHSA-2012:1211 |
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 |
Advisories 7
- RHSA-2012:1211 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:1210 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2553-1 iceweasel - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2556-1 icedove - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2554-1 iceape - 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-2024:10071-1 MozillaFirefox-50.1.0-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- DSA-2556 vendor-advisory
- RHSA-2012:1211 vendor-advisory
- http://www.mozilla.org/security/announce/2012/mfsa2012-58.html
- DSA-2553 vendor-advisory
- oval:org.mitre.oval:def:16494 vdb-entry signature
- https://bugzilla.mozilla.org/show_bug.cgi?id=769120
- USN-1548-1 vendor-advisory
- USN-1548-2 vendor-advisory
- RHSA-2012:1210 vendor-advisory
- SUSE-SU-2012:1167 vendor-advisory
- DSA-2554 vendor-advisory
- SUSE-SU-2012:1157 vendor-advisory
- openSUSE-SU-2012:1065 vendor-advisory
- http://www.xerox.com/download/security/security-bulletin/16287-4d6b7b0c81f7b/cert_XRX13-003_v1.0.pdf