Description
The JavaScript engine in Mozilla Firefox 3.x before 3.0.9, Thunderbird before 2.0.0.22, and SeaMonkey before 1.1.16 allows remote attackers to cause a denial of service (application crash) and possibly trigger memory corruption via vectors involving (1) js_FindPropertyHelper, related to the definitions of Math and Date; and (2) js_CheckRedeclaration.
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 | 1.9.0.9-0lenny2 | DSA-1797-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | firefox | 3.0.9-1.el5 | RHSA-2009:0436 |
| RHEL 5 | xulrunner +2 | 1.9.0.9-1.el5 | RHSA-2009:0436 |
| RHEL 4 | firefox | 3.0.9-1.el4 | RHSA-2009:0436 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 50.1.0-1.1 | openSUSE-SU-2024:10071-1 |
Advisories 3
- RHSA-2009:0436 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1797-1 xulrunner - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10071-1 MozillaFirefox-50.1.0-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- oval:org.mitre.oval:def:7516 vdb-entry signature
- MDVSA-2009:111 vendor-advisory
- FEDORA-2009-3875 vendor-advisory
- 34894 third-party-advisory
- ADV-2009-1125 vdb-entry
- SSA:2009-178-01 vendor-advisory
- 34758 third-party-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=475971
- 35602 third-party-advisory
- oval:org.mitre.oval:def:9535 vdb-entry signature
- oval:org.mitre.oval:def:5319 vdb-entry signature
- https://bugzilla.mozilla.org/show_bug.cgi?id=461158
- 35065 third-party-advisory
- USN-764-1 vendor-advisory
- MDVSA-2009:141 vendor-advisory
- SUSE-SR:2009:010 vendor-advisory
- 35042 third-party-advisory
- 34656 vdb-entry
- 34843 third-party-advisory
- DSA-1797 vendor-advisory
- oval:org.mitre.oval:def:5480 vdb-entry signature
- RHSA-2009:0436 vendor-advisory
- 34780 third-party-advisory
- 264308 vendor-advisory
- oval:org.mitre.oval:def:6015 vdb-entry signature
- http://www.mozilla.org/security/announce/2009/mfsa2009-14.html
- 1022090 vdb-entry