Vulnerability in Mozilla Firefox
CVE-2023-6206
The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on permission prompts. It was possible to use this fact to surprise users by luring them to click where the permission grant button would be about to appear. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
EPSS: 0.006 (43.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Firefox_esr
- Mozilla Thunderbird — versions unspecified
- Debian Debian_linux — versions 10.0, 11.0, 12.0
Weakness classification (CWE)
References
- security@mozilla.org (Permissions Required, Issue Tracking)
- security@mozilla.org (Release Notes, Vendor Advisory)
- security@mozilla.org (Release Notes, Vendor Advisory)
- security@mozilla.org (Release Notes, Vendor Advisory)
- security@mozilla.org (Third Party Advisory)
- security@mozilla.org (Mailing List)
- security@mozilla.org
Frequently asked questions
- What is CVE-2023-6206?
- CVE-2023-6206 is a medium-severity vulnerability in Mozilla Firefox, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 5.4/10. Published 2023-11-21.
- How severe is CVE-2023-6206?
- Medium severity. CVSS v3 base score is 5.4 out of 10.