Description
The browser engine in Mozilla Firefox before 3.0.12 and Thunderbird allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via vectors related to (1) the frame chain and synchronous events, (2) a SetMayHaveFrame assertion and nsCSSFrameConstructor::CreateFloatingLetterFrame, (3) nsCSSFrameConstructor::ConstructFrame, (4) the child list and initial reflow, (5) GetLastSpecialSibling, (6) nsFrameManager::GetPrimaryFrameFor and MathML, (7) nsFrame::GetBoxAscent, (8) nsCSSFrameConstructor::AdjustParentFrame, (9) nsDOMOfflineResourceList, and (10) nsContentUtils::ComparePosition.
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 5.0 | xulrunner | 1.9.0.12-0lenny1 | DSA-1840-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | firefox | 3.0.12-1.el5_3 | RHSA-2009:1162 |
| RHEL 5 | thunderbird | 2.0.0.24-2.el5_4 | RHSA-2010:0153 |
| RHEL 5 | xulrunner +2 | 1.9.0.12-1.el5_3 | RHSA-2009:1162 |
| RHEL 4 | firefox | 3.0.12-1.el4 | RHSA-2009:1162 |
| RHEL 4 | seamonkey +5 | 1.0.9-45.el4_8 | RHSA-2009:1163 |
| RHEL 4 | thunderbird | 1.5.0.12-25.el4 | RHSA-2010:0154 |
| RHEL 3 | seamonkey +9 | 1.0.9-0.40.el3 | RHSA-2009:1163 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | thunderbird | 2.0.0.24-2.el5_4 | RHSA-2010:0153 |
Advisories 5
- RHSA-2009:1162 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2010:0154 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2009:1163 Red Hat Security Advisory: seamonkey security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1840-1 xulrunner - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
- RHSA-2010:0153 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jan 14, 2026
References
- 265068 vendor-advisory
- 1020800 vendor-advisory
- RHSA-2010:0153 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=463350
- https://bugzilla.mozilla.org/show_bug.cgi?id=468211
- FEDORA-2009-7961 vendor-advisory
- 36145 third-party-advisory
- 35944 third-party-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=461861
- ADV-2010-0650 vdb-entry
- 35943 third-party-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=442227
- SUSE-SA:2009:039 vendor-advisory
- RHSA-2009:1162 vendor-advisory
- http://www.mozilla.org/security/announce/2009/mfsa2009-34.html
- RHSA-2010:0154 vendor-advisory
- oval:org.mitre.oval:def:10906 vdb-entry signature
- https://bugzilla.mozilla.org/show_bug.cgi?id=466763
- 35758 vdb-entry
- ADV-2009-2152 vdb-entry
- 36005 third-party-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=445177
- RHSA-2009:1163 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=472668
- 35947 third-party-advisory
- SUSE-SA:2009:042 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=472950
- https://bugzilla.mozilla.org/show_bug.cgi?id=491134
- 35914 third-party-advisory
- ADV-2009-1972 vdb-entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=413085