Memory safety bugs were reported in Thunderbird 45.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 50.1, Firefox ESR < 45.6, and Thunderbird < 45.6.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2016-9893 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 |
| CVSS3 Base Score | 7.3 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity Impact | Low |
| Availability Impact | Low |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 7 (firefox) | RHSA-2016:2946 | 2016-12-14 |
| Red Hat Enterprise Linux 5 (thunderbird) | RHSA-2016:2973 | 2016-12-21 |
| Red Hat Enterprise Linux 7 (thunderbird) | RHSA-2016:2973 | 2016-12-21 |
| Red Hat Enterprise Linux 6 (firefox) | RHSA-2016:2946 | 2016-12-14 |
| Red Hat Enterprise Linux 5 (firefox) | RHSA-2016:2946 | 2016-12-14 |
| Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) (thunderbird) | RHSA-2016:2973 | 2016-12-21 |
| Red Hat Enterprise Linux 6 (thunderbird) | RHSA-2016:2973 | 2016-12-21 |
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