Description
Mozilla Firefox before 3.0.12, and 3.5.x before 3.5.2, allows remote SOCKS5 proxy servers to cause a denial of service (data stream corruption) via a long domain name in a reply.
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 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 50.1.0-1.1 | openSUSE-SU-2024:10071-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
Advisories 7
- 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
- openSUSE-SU-2024:14572-1 firefox-esr-128.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2010:0153 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jan 14, 2026
- openSUSE-SU-2024:10071-1 MozillaFirefox-50.1.0-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- ADV-2009-2142 vdb-entry
- RHSA-2010:0153 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=459524
- 1022665 vdb-entry
- 266148 vendor-advisory
- ADV-2010-0650 vdb-entry
- firefox-socks5-dos(52252) vdb-entry
- 35925 vdb-entry
- FEDORA-2009-8288 vendor-advisory
- RHSA-2010:0154 vendor-advisory
- 36126 third-party-advisory
- FEDORA-2009-8279 vendor-advisory
- oval:org.mitre.oval:def:10197 vdb-entry signature
- http://www.mozilla.org/security/announce/2009/mfsa2009-38.html