Mozilla Firefox before 35.0, Firefox ESR 31.x before 31.4, Thunderbird before 31.4, and SeaMonkey before 2.32 do not properly interpret Set-Cookie headers within responses that have a 407 (aka Proxy Authentication Required) status code, which allows remote HTTP proxy servers to conduct session fixation attacks by providing a cookie name that corresponds to the session cookie of the origin server.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2014-8639 from the MITRE CVE dictionary dictionary and NIST NVD.
| Base Score | 4.3 |
|---|---|
| Base Metrics | AV:N/AC:M/Au:N/C:N/I:P/A:N |
| Access Vector | Network |
| Access Complexity | Medium |
| Authentication | None |
| Confidentiality Impact | None |
| Integrity Impact | Partial |
| Availability Impact | None |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) (thunderbird) | RHSA-2015:0047 | 2015-01-13 |
| Red Hat Enterprise Linux 6 (firefox) | RHSA-2015:0046 | 2015-01-13 |
| Red Hat Enterprise Linux 6 (thunderbird) | RHSA-2015:0047 | 2015-01-13 |
| Red Hat Enterprise Linux 5 (thunderbird) | RHSA-2015:0047 | 2015-01-13 |
| Red Hat Enterprise Linux 5 (firefox) | RHSA-2015:0046 | 2015-01-13 |
| Red Hat Enterprise Linux 7 (firefox) | RHSA-2015:0046 | 2015-01-13 |
Vulmon