Medium severity · published Dec 19, 2023
CVE-2023-6867
The timing of a button click causing a popup to disappear was approximately the same length as the anti-clickjacking delay on permission prompts
6.1
CVSS
0.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 121 · source: vendor, NVD
FE
Firefox ESR · Mozilla
before 115.6 · source: vendor, NVD
DL
Debian Linux · Debian
10.0; 11.0; 12.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-6867
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-6867
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1863863
Mailing List
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/
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