CVE-2020-15666
Fixed in a distro release EPSS 1%
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.
Products: Mozilla Firefox, Mozilla Firefox for Android
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu 16.04 LTS | firefox | 80.0+build2-0ubuntu0.16.04.1 |
| Ubuntu 18.04 LTS | firefox | 80.0+build2-0ubuntu0.18.04.1 |
| Ubuntu 18.04 LTS | mozjs38 | no fix |
| Ubuntu 18.04 LTS | mozjs52 | no fix |
| Ubuntu 20.04 LTS | firefox | 80.0+build2-0ubuntu0.20.04.1 |
| Ubuntu 20.04 LTS | mozjs52 | no fix |
| Ubuntu 20.04 LTS | mozjs68 | no fix |
| openSUSE Tumbleweed | MozillaFirefox | 92.0-1.2 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 |