Description
Heap-based buffer overflow in the gfxShapedWord::CompressedGlyph::IsClusterStart function in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code via unspecified vectors.
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.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | firefox +3 | 10.0.11-1.el6_3 | RHSA-2012:1483, RHSA-2012:1482 |
| RHEL 5 | firefox +3 | 10.0.11-1.el5_8 | RHSA-2012:1483, RHSA-2012:1482 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | thunderbird | 10.0.11-1.el5_8 | RHSA-2012:1483 |
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 4
- RHSA-2012:1483 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:1482 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 28, 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
- USN-1638-3 vendor-advisory
- oval:org.mitre.oval:def:16968 vdb-entry signature
- 51370 third-party-advisory
- USN-1638-2 vendor-advisory
- openSUSE-SU-2012:1586 vendor-advisory
- USN-1636-1 vendor-advisory
- openSUSE-SU-2013:0175 vendor-advisory
- RHSA-2012:1483 vendor-advisory
- firefox-gfxshapedword-bo(80196) vdb-entry
- http://www.palemoon.org/releasenotes-ng.shtml
- RHSA-2012:1482 vendor-advisory
- 51434 third-party-advisory
- openSUSE-SU-2012:1583 vendor-advisory
- 51439 third-party-advisory
- 87607 vdb-entry
- 51440 third-party-advisory
- USN-1638-1 vendor-advisory
- SUSE-SU-2012:1592 vendor-advisory
- 51359 third-party-advisory
- MDVSA-2012:173 vendor-advisory
- openSUSE-SU-2012:1585 vendor-advisory
- 51381 third-party-advisory
- 51369 third-party-advisory
- http://www.mozilla.org/security/announce/2012/mfsa2012-105.html
- 51360 third-party-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=804927
- 56637 vdb-entry