Description
Mozilla Firefox before 3.6.23 and 4.x through 6, Thunderbird before 7.0, and SeaMonkey before 2.4 do not properly handle HTTP responses that contain multiple Location, Content-Length, or Content-Disposition headers, which makes it easier for remote attackers to conduct HTTP response splitting attacks via crafted header values.
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 | 2.0.11-8 | DSA-2312-1 |
| Debian 6.0 | icedove | 3.0.11-1+squeeze5 | DSA-2317-1 |
| Debian 6.0 | iceweasel | 3.5.16-10 | DSA-2313-1 |
| Debian 5.0 | xulrunner | 1.9.0.19-14 | DSA-2313-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | firefox | 3.6.23-2.el6_1 | RHSA-2011:1341 |
| RHEL 6 | thunderbird | 3.1.15-1.el6_1 | RHSA-2011:1342 |
| RHEL 6 | xulrunner +1 | 1.9.2.23-1.el6_1.1 | RHSA-2011:1341 |
| RHEL 5 | firefox | 3.6.23-2.el5_7 | RHSA-2011:1341 |
| RHEL 5 | xulrunner +1 | 1.9.2.23-1.el5_7 | RHSA-2011:1341 |
| RHEL 4 | firefox | 3.6.23-1.el4 | RHSA-2011:1341 |
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 |
Advisories 8
- RHSA-2011:1342 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2011:1341 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2317-1 icedove - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2313-1 iceweasel - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2312-1 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-2024:14572-1 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
- MDVSA-2011:139 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=655389
- DSA-2312 vendor-advisory
- 46315 third-party-advisory
- RHSA-2011:1341 vendor-advisory
- MDVSA-2011:141 vendor-advisory
- MDVSA-2011:142 vendor-advisory
- http://www.mozilla.org/security/announce/2011/mfsa2011-39.html
- SUSE-SU-2011:1256 vendor-advisory
- openSUSE-SU-2011:1076 vendor-advisory
- oval:org.mitre.oval:def:14361 vdb-entry signature
- DSA-2317 vendor-advisory
- MDVSA-2011:140 vendor-advisory
- DSA-2313 vendor-advisory