If an attacker loaded a font using <code>FontFace()</code> on a background worker, a use-after-free could have occurred, leading to a potentially exploitable crash. This vulnerability affects Firefox < 107.
https://bugzilla.mozilla.org/show_bug.cgi?id=1793314
https://www.mozilla.org/security/advisories/mfsa2022-47/
Source: MITRE
Published: 2022-12-22
Updated: 2023-01-04
Type: CWE-416
Base Score: 7.5
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 3.9
Severity: HIGH