Description
Use-after-free vulnerability in the gfxFont::GetFontEntry 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 or cause a denial of service (heap memory corruption) 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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 6.0 | iceape | 2.0.11-17 | DSA-2584-1 |
| Debian 6.0 | icedove | 3.0.11-1+squeeze15 | DSA-2588-1 |
| Debian 6.0 | iceweasel | 3.5.16-20 | DSA-2583-1 |
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 7
- 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
- DSA-2583-1 iceweasel - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2588-1 icedove - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2584-1 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
- firefox-getfontentry-code-exec(80189) vdb-entry
- USN-1638-3 vendor-advisory
- 51370 third-party-advisory
- USN-1638-2 vendor-advisory
- openSUSE-SU-2012:1586 vendor-advisory
- 87609 vdb-entry
- USN-1636-1 vendor-advisory
- openSUSE-SU-2013:0175 vendor-advisory
- RHSA-2012:1483 vendor-advisory
- 56634 vdb-entry
- DSA-2584 vendor-advisory
- RHSA-2012:1482 vendor-advisory
- 51434 third-party-advisory
- openSUSE-SU-2012:1583 vendor-advisory
- 51439 third-party-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=798853
- 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
- oval:org.mitre.oval:def:16902 vdb-entry signature
- DSA-2583 vendor-advisory
- 51369 third-party-advisory
- http://www.mozilla.org/security/announce/2012/mfsa2012-105.html
- 51360 third-party-advisory
- DSA-2588 vendor-advisory