CVE-2023-6856
HIGHFirefox < 121.0 and Firefox ESR < 115.6 - Remote Code Execution via WebGL DrawElementsInstanced
Title source: llmDescription
The WebGL `DrawElementsInstanced` method was susceptible to a heap buffer overflow when used on systems with the Mesa VM driver. This issue could allow an attacker to perform remote code execution and sandbox escape. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.
References (9)
Core 9
Core References
Issue Tracking, Permissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=1843782
Mailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html
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-5581
Third Party Advisory
https://www.debian.org/security/2023/dsa-5582
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-54/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-55/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-56/
Scores
CVSS v3
8.8
EPSS
0.1047
EPSS Percentile
93.3%
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 (6)
debian/debian_linux
10.0
debian/debian_linux
11.0
debian/debian_linux
12.0
mozilla/firefox
< 121.0
mozilla/firefox_esr
< 115.6
mozilla/thunderbird
< 115.6
Published
Dec 19, 2023
Tracked Since
Feb 18, 2026