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CVE-2023-6856

Published: Dec 19, 2023

Modified: Feb 13, 2025

PUBLISHED

Description

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.

Vendor	Product	Versions
Mozilla	Firefox ESR	affected `unspecified - < 115.6`
Mozilla	Thunderbird	affected `unspecified - < 115.6`
Mozilla	Firefox	affected `unspecified - < 121`

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1843782

https://www.mozilla.org/security/advisories/mfsa2023-54/

https://www.mozilla.org/security/advisories/mfsa2023-55/

https://www.mozilla.org/security/advisories/mfsa2023-56/

https://www.debian.org/security/2023/dsa-5581

https://www.debian.org/security/2023/dsa-5582

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

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