CVE-2023-6858

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.

Published: Dec 19, 2023
Updated: Dec 23, 2023
CVE: CVE-2023-6858
Severity: High
Exploit:

CVSS v3:

Severity: High
Score: 8.8
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWEs:

CWE-787

Affected Software
References

Software	From	Fixed in
mozilla / thunderbird	-	115.6
mozilla / firefox	-	121.0
mozilla / firefox_esr	-	115.6
debian / debian_linux	11.0	11.0.x
debian / debian_linux	12.0	12.0.x
debian / debian_linux	10.0	10.0.x

https://bugzilla.mozilla.org/show_bug.cgi?id=1826791
https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html
https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html
https://security.gentoo.org/glsa/202401-10
https://www.debian.org/security/2023/dsa-5581
https://www.debian.org/security/2023/dsa-5582
https://www.mozilla.org/security/advisories/mfsa2023-54/
https://www.mozilla.org/security/advisories/mfsa2023-55/
https://www.mozilla.org/security/advisories/mfsa2023-56/

Vulnerability Database

289,689

CVE-2023-6858