Description
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 recognize a wildcard IP address in the subject's Common Name field of an X.509 certificate, which might allow man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.
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 | nss | 3.12.8-1 | — |
| Debian 13 | nss | 3.12.8-1 | — |
| Debian 12 | nss | 3.12.8-1 | — |
| Debian 5.0 | nss | 3.12.3.1-0lenny2 | DSA-2123-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | nss +9 | 3.12.8-1.el6_0 | RHSA-2010:0862 |
| 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 |
| RHEL 4 | seamonkey +5 | 1.0.9-64.el4 | RHSA-2010:0781 |
| RHEL 3 | seamonkey +9 | 1.0.9-0.61.el3 | RHSA-2010:0781 |
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 |
| openSUSE Tumbleweed | mozilla-nss | 3.26.2-1.1 | openSUSE-SU-2024:10451-1 |
Advisories 8
- RHSA-2010:0782 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2010:0862 Red Hat Security Advisory: nss security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2010:0781 Red Hat Security Advisory: seamonkey security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-2123-1 nss - cryptographic weaknesses Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10451-1 libfreebl3-3.26.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 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
- SUSE-SR:2010:020 vendor-advisory
- RHSA-2010:0782 vendor-advisory
- MDVSA-2010:210 vendor-advisory
- http://blogs.sun.com/security/entry/multiple_vulnerabilities_in_mozilla_firefox
- RHSA-2010:0781 vendor-advisory
- 42867 third-party-advisory
- ADV-2011-0061 vdb-entry
- USN-1007-1 vendor-advisory
- DSA-2123 vendor-advisory
- http://support.avaya.com/css/P8/documents/100114250
- https://bugzilla.mozilla.org/show_bug.cgi?id=578697
- http://support.avaya.com/css/P8/documents/100120156
- oval:org.mitre.oval:def:12254 vdb-entry signature
- http://www.mozilla.org/security/announce/2010/mfsa2010-70.html
- 41839 third-party-advisory