CVE-2023-6867
MEDIUMFirefox < 121.0 and Firefox ESR < 115.6 - Clickjacking via Permission Prompt Timing
Title source: llmDescription
The timing of a button click causing a popup to disappear was approximately the same length as 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 ESR < 115.6 and Firefox < 121.
References (6)
Core 6
Core References
Issue Tracking, Permissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=1863863
Mailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html
Third Party Advisory
https://security.gentoo.org/glsa/202401-10
Third Party Advisory
https://www.debian.org/security/2023/dsa-5581
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-54/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-56/
Scores
CVSS v3
6.1
EPSS
0.0068
EPSS Percentile
47.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-1021
Status
published
Products (5)
debian/debian_linux
10.0
debian/debian_linux
11.0
debian/debian_linux
12.0
mozilla/firefox
< 121.0
mozilla/firefox_esr
< 115.6
Published
Dec 19, 2023
Tracked Since
Feb 18, 2026