CVE-2023-6858
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 1.5%
exploitation probability
1.5%top 26% of all CVEs
observed exploitation
nono source reports it
Firefox was susceptible to a heap buffer overflow in `nsTextFragment` due to insufficient OOM handling. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
https://bugzilla.mozilla.org/show_bug.cgi?id=1826791https://lists.debian.org/debian-lts-announce/2023/12/msg00020.htmlhttps://lists.debian.org/debian-lts-announce/2023/12/msg00021.htmlhttps://security.gentoo.org/glsa/202401-10https://www.debian.org/security/2023/dsa-5581https://www.debian.org/security/2023/dsa-5582https://www.mozilla.org/security/advisories/mfsa2023-54/https://www.mozilla.org/security/advisories/mfsa2023-55/https://www.mozilla.org/security/advisories/mfsa2023-56/