CVE-2020-15666 — Information Exposure via Error Message in Mozilla Firefox
Severity
6.5MEDIUMNVD
OSV4.7
EPSS
0.4%
top 40.94%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedOct 1
Latest updateMay 24
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NExploitability: 2.8 | Impact: 3.6
Affected Packages4 packages
🔴Vulnerability Details
5GHSA▶
GHSA-5jw8-m77m-3jjm: When trying to load a non-video in an audio/video context the exact status code (200, 302, 404, 500, 412, 403, etc↗2022-05-24
CVEList▶
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↗2020-10-01
OSV▶
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↗2020-08-26
📋Vendor Advisories
4Debian▶
CVE-2020-15666: firefox - When trying to load a non-video in an audio/video context the exact status code ...↗2020