Description
Memory safety bugs present in Firefox 120. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 121.
References (5)
Core 5
Core References
Broken Link, Issue Tracking
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1855327%2C1862089%2C1862723
Mailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html
Third Party Advisory
https://security.gentoo.org/glsa/202401-10
Third Party Advisory
https://www.debian.org/security/2023/dsa-5582
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-56/
Scores
CVSS v3
8.8
EPSS
0.0038
EPSS Percentile
59.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Details
CWE
CWE-787
Status
published
Products (4)
debian/debian_linux
10.0
debian/debian_linux
11.0
debian/debian_linux
12.0
mozilla/firefox
< 121.0
Published
Dec 19, 2023
Tracked Since
Feb 18, 2026