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.
The product does not validate, or incorrectly validates, a certificate.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firefox | Mozilla | * | 17.0.3 (excluding) |
| Firefox | Mozilla | * | 19.0 (excluding) |
| Seamonkey | Mozilla | * | 2.16 (excluding) |
| Thunderbird | Mozilla | * | 17.0.3 (excluding) |
| Thunderbird_esr | Mozilla | * | 17.0.3 (excluding) |
| Red Hat Enterprise Linux 5 | RedHat | thunderbird-0:17.0.3-1.el5_9 | * |
| Red Hat Enterprise Linux 5 | RedHat | devhelp-0:0.12-23.el5_9 | * |
| Red Hat Enterprise Linux 5 | RedHat | firefox-0:17.0.3-1.el5_9 | * |
| Red Hat Enterprise Linux 5 | RedHat | xulrunner-0:17.0.3-1.el5_9 | * |
| Red Hat Enterprise Linux 5 | RedHat | yelp-0:2.16.0-30.el5_9 | * |
| Red Hat Enterprise Linux 6 | RedHat | firefox-0:17.0.3-1.el6_3 | * |
| Red Hat Enterprise Linux 6 | RedHat | libproxy-0:0.3.0-4.el6_3 | * |
| Red Hat Enterprise Linux 6 | RedHat | xulrunner-0:17.0.3-1.el6_3 | * |
| Red Hat Enterprise Linux 6 | RedHat | yelp-0:2.28.1-17.el6_3 | * |
| Red Hat Enterprise Linux 6 | RedHat | thunderbird-0:17.0.3-1.el6_3 | * |
| Firefox | Ubuntu | hardy | * |
| Firefox | Ubuntu | lucid | * |
| Firefox | Ubuntu | oneiric | * |
| Firefox | Ubuntu | precise | * |
| Firefox | Ubuntu | quantal | * |
| Firefox | Ubuntu | upstream | * |
| Seamonkey | Ubuntu | hardy | * |
| Seamonkey | Ubuntu | lucid | * |
| Seamonkey | Ubuntu | oneiric | * |
| Seamonkey | Ubuntu | upstream | * |
| Thunderbird | Ubuntu | hardy | * |
| Thunderbird | Ubuntu | lucid | * |
| Thunderbird | Ubuntu | oneiric | * |
| Thunderbird | Ubuntu | precise | * |
| Thunderbird | Ubuntu | quantal | * |
| Thunderbird | Ubuntu | upstream | * |
| Xulrunner-1.9.2 | Ubuntu | hardy | * |
| Xulrunner-1.9.2 | Ubuntu | lucid | * |