An out-of-bounds read vulnerability with the Opus encoder when the number of channels in an audio stream changes while the encoder is in use. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-7758 from the MITRE CVE dictionary dictionary and NIST NVD.
| CVSS3 Base Score | 6.1 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | Required |
| Scope | Changed |
| Confidentiality | Low |
| Integrity Impact | Low |
| Availability Impact | None |
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 6 (thunderbird) | RHSA-2017:1561 | 2017-06-21 |
| Red Hat Enterprise Linux 7 (thunderbird) | RHSA-2017:1561 | 2017-06-21 |
| Red Hat Enterprise Linux 6 (firefox) | RHSA-2017:1440 | 2017-06-14 |
| Red Hat Enterprise Linux 7 (firefox) | RHSA-2017:1440 | 2017-06-14 |
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