Vulnerability · Published Apr 16, 2024 · Assigned by mozilla
CVE-2024-3861
Medium 4.0
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 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.0Medium
Exploit odds (30 days)0.2%top 86.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
If an AlignedBuffer were assigned to itself, the subsequent self-move could result in an incorrect reference count and later use-after-free. This vulnerability affects Firefox < 125, Firefox ESR < 115.10, and Thunderbird < 115.10.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | firefox | 115.10.0-1.el8_9.alma.1 | ALSA-2024:1912 |
| AlmaLinux:9 | firefox | 115.10.0-1.el9_3.alma.1 | ALSA-2024:1908 |
| AlmaLinux:9 | firefox-x11 | 115.10.0-1.el9_3.alma.1 | ALSA-2024:1908 |
| AlmaLinux:8 | thunderbird | 115.10.0-2.el8_9.alma.1 | ALSA-2024:1939 |
| AlmaLinux:9 | thunderbird | 115.10.0-2.el9_3.alma.1 | ALSA-2024:1940 |
| Debian:12 | firefox-esr | 115.10.0esr-1~deb12u1 | DEBIAN-CVE-2024-3861 |
| Debian:12 | firefox-esr | 115.10.0esr-1~deb12u1 | DSA-5663-1 |
| Debian:13 | firefox-esr | 115.10.0esr-1 | DEBIAN-CVE-2024-3861 |
| Debian:14 | firefox-esr | 115.10.0esr-1 | DEBIAN-CVE-2024-3861 |
| Debian:12 | thunderbird | 1:115.10.1-1~deb12u1 | DEBIAN-CVE-2024-3861 |
| Debian:12 | thunderbird | 1:115.10.1-1~deb12u1 | DSA-5670-1 |
| Debian:13 | thunderbird | 1:115.10.1-1 | DEBIAN-CVE-2024-3861 |
| Debian:14 | thunderbird | 1:115.10.1-1 | DEBIAN-CVE-2024-3861 |
| Rocky Linux:8 | firefox | 0:115.10.0-1.el8_9 | RLSA-2024:1912 |
| Rocky Linux:9 | firefox | 0:115.10.0-1.el9_3 | RLSA-2024:1908 |
| Ubuntu:22.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2024-3861 |
| Ubuntu:24.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2024-3861 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2024-3861 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2024-3861 |
| Ubuntu:22.04:LTS | thunderbird | 1:115.10.1+build1-0ubuntu0.22.04.1 | UBUNTU-CVE-2024-3861 |
| Ubuntu:22.04:LTS | thunderbird | 1:115.10.1+build1-0ubuntu0.22.04.1 | USN-6750-1 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | unspecified – before 125 |
| Mozilla | Firefox ESR | unspecified – before 115.10 |
| Mozilla | Thunderbird | unspecified – before 115.10 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1883158
- https://lists.debian.org/debian-lts-announce/2024/04/msg00012.html
- https://lists.debian.org/debian-lts-announce/2024/04/msg00013.html
- https://www.mozilla.org/security/advisories/mfsa2024-18/
- https://www.mozilla.org/security/advisories/mfsa2024-19/
- https://www.mozilla.org/security/advisories/mfsa2024-20/