CVE-2024-3861

low-risk
Published 2024-04-16

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.

Do I need to act?

-
0.12% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.0/10 Medium
LOCAL / LOW complexity

Affected Products (4)

Affected Vendors

Debian Mozilla

References (12)

Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1883158
Mailing List https://lists.debian.org/debian-lts-announce/2024/04/msg00012.html
Mailing List https://lists.debian.org/debian-lts-announce/2024/04/msg00013.html
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-18/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-19/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-20/
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1883158
Mailing List https://lists.debian.org/debian-lts-announce/2024/04/msg00012.html
Mailing List https://lists.debian.org/debian-lts-announce/2024/04/msg00013.html
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-18/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-19/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-20/
25
/ 100
low-risk
Severity 14/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 10/34 · Low