Vulnerability · Published Dec 19, 2023 · Assigned by mozilla
CVE-2023-6867
Medium 6.1
In plain English
A medium-severity security flaw in Firefox from Mozilla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.1Medium
Exploit odds (30 days)0.7%top 47.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | firefox | 115.6.0-1.el8_9.alma | ALSA-2024:0012 |
| AlmaLinux:9 | firefox | 115.6.0-1.el9_3.alma | ALSA-2024:0025 |
| AlmaLinux:9 | firefox-x11 | 115.6.0-1.el9_3.alma | ALSA-2024:0025 |
| Alpine:v3.20 | firefox-esr | 115.6.0-r0 | ALPINE-CVE-2023-6867 |
| Alpine:v3.21 | firefox-esr | 115.6.0-r0 | ALPINE-CVE-2023-6867 |
| Alpine:v3.22 | firefox-esr | 115.6.0-r0 | ALPINE-CVE-2023-6867 |
| Alpine:v3.23 | firefox-esr | 115.6.0-r0 | ALPINE-CVE-2023-6867 |
| Debian:12 | firefox-esr | 115.6.0esr-1~deb12u1 | DEBIAN-CVE-2023-6867 |
| Debian:12 | firefox-esr | 115.6.0esr-1~deb12u1 | DSA-5581-1 |
| Debian:13 | firefox-esr | 115.6.0esr-1 | DEBIAN-CVE-2023-6867 |
| Debian:14 | firefox-esr | 115.6.0esr-1 | DEBIAN-CVE-2023-6867 |
| Rocky Linux:8 | firefox | 0:115.6.0-1.el8_9 | RLSA-2024:0012 |
| Ubuntu:22.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2023-6867 |
| Ubuntu:24.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2023-6867 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2023-6867 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2023-6867 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox ESR | unspecified – before 115.6 |
| Mozilla | Firefox | unspecified – before 121 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1863863
- https://www.mozilla.org/security/advisories/mfsa2023-54/
- https://www.mozilla.org/security/advisories/mfsa2023-56/
- https://www.debian.org/security/2023/dsa-5581
- https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html
- https://security.gentoo.org/glsa/202401-10