Vulnerability Details CVE-2020-15666
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 58.2%
CVSS Severity
CVSS v3 Score 6.5
CVSS v2 Score 4.3
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1450853
- https://www.mozilla.org/security/advisories/mfsa2020-36/
- https://www.mozilla.org/security/advisories/mfsa2020-39/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1450853
- https://www.mozilla.org/security/advisories/mfsa2020-36/
- https://www.mozilla.org/security/advisories/mfsa2020-39/
Products affected by CVE-2020-15666
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cpe:2.3:a:mozilla:firefox:*
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cpe:2.3:a:mozilla:firefox:14.0
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cpe:2.3:a:mozilla:firefox:15.0
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cpe:2.3:a:mozilla:firefox:16.0
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cpe:2.3:a:mozilla:firefox:17.0
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cpe:2.3:a:mozilla:firefox:18.0
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cpe:2.3:a:mozilla:firefox:19.0
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cpe:2.3:a:mozilla:firefox:21.0
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cpe:2.3:a:mozilla:firefox:22.0
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cpe:2.3:a:mozilla:firefox:24.0
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cpe:2.3:a:mozilla:firefox:24.1
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cpe:2.3:a:mozilla:firefox:25.0