Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 80.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1450853ExploitIssue TrackingVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-36/Release NotesVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-39/Release NotesVendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1450853ExploitIssue TrackingVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-36/Release NotesVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-39/Release NotesVendor Advisory
FAQ
What is CVE-2020-15666?
CVE-2020-15666 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 inco...
How severe is CVE-2020-15666?
CVE-2020-15666 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-15666?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox.