A use-after-free vulnerability in the Media Decoder when working with media files when some events are fired after the media elements are freed from memory. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-5396 from the MITRE CVE dictionary dictionary and NIST NVD.
| 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 |
| CVSS3 Base Score | 5.6 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L |
| Attack Vector | Network |
| Attack Complexity | High |
| 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 (thunderbird) | RHSA-2017:0238 | 2017-02-02 |
| Red Hat Enterprise Linux 5 (firefox) | RHSA-2017:0190 | 2017-01-25 |
| Red Hat Enterprise Linux 7 (firefox) | RHSA-2017:0190 | 2017-01-25 |
| Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) (thunderbird) | RHSA-2017:0238 | 2017-02-02 |
| Red Hat Enterprise Linux 5 (thunderbird) | RHSA-2017:0238 | 2017-02-02 |
| Red Hat Enterprise Linux 6 (thunderbird) | RHSA-2017:0238 | 2017-02-02 |
| Red Hat Enterprise Linux 6 (firefox) | RHSA-2017:0190 | 2017-01-25 |
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