A vulnerability can occur when capturing a media stream when the media source type is changed as the capture is occurring. This can result in stream data being cast to the wrong type causing a potentially exploitable crash. This vulnerability affects Thunderbird < 60, Firefox ESR < 60.1, Firefox ESR < 52.9, and Firefox < 61.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2018-5156 from the MITRE CVE dictionary dictionary and NIST NVD.
| CVSS3 Base Score | 7.5 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | High |
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 7 (firefox) | RHSA-2018:2113 | 2018-06-28 |
| Red Hat Enterprise Linux 6 (firefox) | RHSA-2018:2112 | 2018-06-28 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | thunderbird | Not affected |
| Red Hat Enterprise Linux 6 | thunderbird | Not affected |
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