CVE-2020-15666

EPSS 1.2%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 1.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

01 Oct 2020Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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 products

Mozilla · Firefox Mozilla · Firefox for Android

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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/