CVE-2023-6856
CVSS 3.1 Score 8.8 of 10 (high)
Details
Published Dec 19, 2023
Updated: Feb 2, 2024
CWE ID 787
Summary
CVE-2023-6856 is a critical vulnerability affecting Firefox ESR versions below 115.6, Thunderbird below 115.6, and Firefox below 121. This issue lies in the WebGL `DrawElementsInstanced` method, which is susceptible to a heap buffer overflow when utilized on systems equipped with the Mesa VM driver. An attacker can exploit this vulnerability to execute remote code and escape the sandbox, posing a serious threat to system security.
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