Description
The WYSIWYG rendering engine ("rich mail" editor) in Mozilla Thunderbird 1.0.7 and earlier allows user-assisted attackers to bypass javascript security settings and obtain sensitive information or cause a crash via an e-mail containing a javascript URI in the SRC attribute of an IFRAME tag, which is executed when the user edits the e-mail.
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 14 | thunderbird | 1.5.0.2-1 | — |
| Debian 13 | thunderbird | 1.5.0.2-1 | — |
| Debian 12 | thunderbird | 1.5.0.2-1 | — |
| Debian 3.1 | mozilla | 2:1.7.8-1sarge5 | DSA-1046-1 |
| Debian 3.1 | mozilla-thunderbird | 1.0.2-2.sarge1.0.8 | DSA-1051-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 4 | devhelp +1 | 0.9.2-2.4.8 | RHSA-2006:0329 |
| RHEL 4 | thunderbird | 1.0.8-1.4.1 | RHSA-2006:0330 |
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 (Multiple Products) - iFrame JavaScript Execution EDB-27257 · dos · Feb 22, 2006 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 4
- RHSA-2006:0329 Red Hat Security Advisory: mozilla security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2006:0330 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1046-1 mozilla - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1051-1 mozilla-thunderbird - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- RHSA-2006:0330 vendor-advisory
- oval:org.mitre.oval:def:2024 vdb-entry signature
- 19902 third-party-advisory
- USN-276-1 vendor-advisory
- HPSBUX02122 vendor-advisory
- 1015665 vdb-entry
- 19941 third-party-advisory
- 19821 third-party-advisory
- MDKSA-2006:052 vendor-advisory
- 21622 third-party-advisory
- http://support.avaya.com/elmodocs2/security/ASA-2006-205.htm
- 19823 third-party-advisory
- DSA-1051 vendor-advisory
- ADV-2006-3749 vdb-entry
- RHSA-2006:0329 vendor-advisory
- GLSA-200604-18 vendor-advisory
- 19811 third-party-advisory
- 21033 third-party-advisory
- 102550 vendor-advisory
- 23653 vdb-entry
- oval:org.mitre.oval:def:10782 vdb-entry signature
- SUSE-SA:2006:021 vendor-advisory
- SSRT061236 vendor-advisory
- 20060222 Mozilla Thunderbird : Remote Code Execution & Denial of Service mailing-list
- MDKSA-2006:078 vendor-advisory
- http://www.mozilla.org/security/announce/2006/mfsa2006-21.html
- 20051 third-party-advisory
- 19863 third-party-advisory
- 16770 vdb-entry
- FLSA:189137-1 vendor-advisory
- 228526 vendor-advisory
- 19721 third-party-advisory
- SUSE-SA:2006:022 vendor-advisory
- GLSA-200605-09 vendor-advisory
- 22065 third-party-advisory
- 19950 third-party-advisory
- mozilla-inline-fwd-code-execution(25983) vdb-entry
- MDKSA-2006:076 vendor-advisory
- DSA-1046 vendor-advisory