CVE-2016-2821
The MITRE CVE dictionary describes this issue as:
Use-after-free vulnerability in the mozilla::dom::Element class in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2, when contenteditable mode is enabled, allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) by triggering deletion of DOM elements that were created in the editor.
Find out more about CVE-2016-2821 from the MITRE CVE dictionary dictionary and NIST NVD.
CVSS v2 metrics
| Base Score | 5.1 |
|---|---|
| Base Metrics | AV:N/AC:H/Au:N/C:P/I:P/A:P |
| Access Vector | Network |
| Access Complexity | High |
| 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).
Red Hat Security Errata
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 7 (firefox) | RHSA-2016:1217 | 2016-06-08 |
| Red Hat Enterprise Linux 5 (firefox) | RHSA-2016:1217 | 2016-06-08 |
| Red Hat Enterprise Linux 6 (firefox) | RHSA-2016:1217 | 2016-06-08 |
Affected Packages State
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | thunderbird | Not affected |
| Red Hat Enterprise Linux 6 | thunderbird | Not affected |
| Red Hat Enterprise Linux 5 | thunderbird | Not affected |
Acknowledgements
Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges firehack as the original reporter.External References
CVE description copyright © 2017, The MITRE Corporation