Use-after-free vulnerability in the CSPService::ShouldLoad function in the microtask implementation in Mozilla Firefox before 39.0, Firefox ESR 38.x before 38.1, and Thunderbird before 38.1 allows remote attackers to execute arbitrary code by leveraging client-side JavaScript that triggers removal of a DOM object on the basis of a Content Policy.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2015-2731 from the MITRE CVE dictionary dictionary and NIST NVD.
| Base Score | 6.8 |
|---|---|
| Base Metrics | AV:N/AC:M/Au:N/C:P/I:P/A:P |
| Access Vector | Network |
| Access Complexity | Medium |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | Partial |
| Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 5 (thunderbird) | RHSA-2015:1455 | 2015-07-20 |
| Red Hat Enterprise Linux 6 (firefox) | RHSA-2015:1207 | 2015-07-03 |
| Red Hat Enterprise Linux 5 (firefox) | RHSA-2015:1207 | 2015-07-03 |
| Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) (thunderbird) | RHSA-2015:1455 | 2015-07-20 |
| Red Hat Enterprise Linux 6 (thunderbird) | RHSA-2015:1455 | 2015-07-20 |
| Red Hat Enterprise Linux 7 (firefox) | RHSA-2015:1207 | 2015-07-03 |
| Red Hat Enterprise Linux 7 (thunderbird) | RHSA-2015:1455 | 2015-07-20 |
Vulmon