CVEvulnerability
CVE-2020-15666
6.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-10-01
- Last modified
- 2026-08-19
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-209
Description
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. This vulnerability affects Firefox < 80 and Firefox for Android < 80.
Affected configurations
• mozilla firefox (< 80.0)
• mozilla firefox mobile (< 80.0)
Related
Weakness · CWE (1)
- CWE-209 Generation of Error Message Containing Sensitive Information weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1450853 Exploit, Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-36/ Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-39/ Release Notes, Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1450853 Exploit, Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-36/ Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-39/ Release Notes, Vendor Advisory