The navigator.sendBeacon implementation in Mozilla Firefox before 35.0, Firefox ESR 31.x before 31.4, Thunderbird before 31.4, and SeaMonkey before 2.32 omits the CORS Origin header, which allows remote attackers to bypass intended CORS access-control checks and conduct cross-site request forgery (CSRF) attacks via a crafted web site.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2014-8638 from the MITRE CVE dictionary dictionary and NIST NVD.
| Base Score | 4.3 |
|---|---|
| Base Metrics | AV:N/AC:M/Au:N/C:P/I:N/A:N |
| Access Vector | Network |
| Access Complexity | Medium |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | None |
| 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