Description
Stack-based buffer overflow in the text-rendering functionality in Mozilla Firefox before 3.5.14 and 3.6.x before 3.6.11, Thunderbird before 3.0.9 and 3.1.x before 3.1.5, and SeaMonkey before 2.0.9 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a long argument to the document.write method.
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 | 1.9.0.19-6 | DSA-2124-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | firefox | 3.6.12-1.el6_0 | RHSA-2010:0861 |
| RHEL 6 | thunderbird | 3.1.6-1.el6_0 | RHSA-2010:0896 |
| RHEL 6 | xulrunner +1 | 1.9.2.12-1.el6_0 | RHSA-2010:0861 |
| RHEL 5 | firefox | 3.6.11-2.el5 | RHSA-2010:0782 |
| RHEL 5 | nss +3 | 3.12.8-1.el5 | RHSA-2010:0782 |
| RHEL 5 | xulrunner +1 | 1.9.2.11-2.el5 | RHSA-2010:0782 |
| RHEL 4 | firefox | 3.6.11-2.el4 | RHSA-2010:0782 |
| RHEL 4 | nss +2 | 3.12.8-1.el4 | RHSA-2010:0782 |
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 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- Mozilla Firefox SeaMonkey 3.6.10 / Thunderbird 3.1.4 - 'document.write' Memory Corruption EDB-34881 · remote · Oct 19, 2010 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 7
- RHSA-2010:0896 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2010:0861 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2010:0782 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2124-1 xulrunner - several vulnerabilities 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-2024:14572-1 firefox-esr-128.5.1-1.1 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
- https://bugzilla.mozilla.org/show_bug.cgi?id=583077
- RHSA-2010:0782 vendor-advisory
- RHSA-2010:0896 vendor-advisory
- MDVSA-2010:210 vendor-advisory
- oval:org.mitre.oval:def:11675 vdb-entry signature
- http://blogs.sun.com/security/entry/multiple_vulnerabilities_in_mozilla_firefox
- 42867 third-party-advisory
- MDVSA-2010:211 vendor-advisory
- ADV-2011-0061 vdb-entry
- USN-998-1 vendor-advisory
- DSA-2124 vendor-advisory
- http://support.avaya.com/css/P8/documents/100120156
- USN-997-1 vendor-advisory
- http://www.mozilla.org/security/announce/2010/mfsa2010-65.html
- FEDORA-2010-16897 vendor-advisory
- RHSA-2010:0861 vendor-advisory
- FEDORA-2010-16885 vendor-advisory