First published: Tue Aug 25 2020(Updated: )
When trying to load a non-video in an audio/video context the exact status code (200, 302, 404, 500, 412, 403, etc.) was disclosed via the MediaError Message. This level of information leakage is inconsistent with the standardized onerror/onsuccess disclosure and can lead to inferring login status to services or device discovery on a local network among other attacks.
Credit: security@mozilla.org
Affected Software | Affected Version | How to fix |
---|---|---|
Mozilla Firefox | <80.0 | |
Mozilla Firefox | <80.0 | |
All of | ||
Mozilla Firefox | =80 | |
Google Android | ||
Mozilla Firefox | <80 | 80 |
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(Found alongside the following vulnerabilities)
The vulnerability ID is CVE-2020-15666.
The severity of CVE-2020-15666 is medium with a CVSS score of 6.5.
Mozilla Firefox version 80 and Google Android are affected by CVE-2020-15666.
CVE-2020-15666 can lead to the disclosure of exact status codes, which can enable attackers to infer login status.
Update Mozilla Firefox to version 80 or later to fix CVE-2020-15666.