Description
Mozilla Firefox before 19.0, Firefox ESR 17.x before 17.0.3, Thunderbird before 17.0.3, Thunderbird ESR 17.x before 17.0.3, and SeaMonkey before 2.16 allow man-in-the-middle attackers to spoof the address bar by operating a proxy server that provides a 407 HTTP status code accompanied by web script, as demonstrated by a phishing attack on an HTTPS site.
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 7 | iceweasel | 17.0.6esr-1~deb7u1 | DSA-2699-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | firefox +3 | 17.0.3-1.el6_3 | RHSA-2013:0272, RHSA-2013:0271 |
| RHEL 6 | libproxy +7 | 0.3.0-4.el6_3 | RHSA-2013:0271 |
| RHEL 6 | yelp | 2.28.1-17.el6_3 | RHSA-2013:0271 |
| RHEL 5 | devhelp +1 | 0.12-23.el5_9 | RHSA-2013:0271 |
| RHEL 5 | firefox +2 | 17.0.3-1.el5_9 | RHSA-2013:0271 |
| RHEL 5 | yelp | 2.16.0-30.el5_9 | RHSA-2013:0271 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | thunderbird | 17.0.3-1.el5_9 | RHSA-2013:0272 |
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 6
- RHSA-2013:0272 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2013:0271 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- DSA-2699-1 iceweasel - 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
- DSA-2699 vendor-advisory
- USN-1729-1 vendor-advisory
- USN-1729-2 vendor-advisory
- http://www.mozilla.org/security/announce/2013/mfsa2013-27.html
- USN-1748-1 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=796475
- openSUSE-SU-2013:0324 vendor-advisory
- RHSA-2013:0271 vendor-advisory
- RHSA-2013:0272 vendor-advisory
- oval:org.mitre.oval:def:16666 vdb-entry signature
- openSUSE-SU-2013:0323 vendor-advisory