2023-09-30
ALT-BU-2023-6029-1
Branch p9 update bulletin.
Closed vulnerabilities
Published: 2022-11-16
BDU:2022-06820
Уязвимость загрузчика операционных систем Grub2, связанная с выходом операции за границы буфера, позволяющая нарушителю выполнить произвольный код
Severity: MEDIUM (6.3)
Vector: AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
References:
Published: 2022-12-19
Modified: 2024-11-21
Modified: 2024-11-21
CVE-2022-3775
When rendering certain unicode sequences, grub2's font code doesn't proper validate if the informed glyph's width and height is constrained within bitmap size. As consequence an attacker can craft an input which will lead to a out-of-bounds write into grub2's heap, leading to memory corruption and availability issues. Although complex, arbitrary code execution could not be discarded.
Severity: HIGH (7.1)
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
References:
Closed bugs
CVE-2022-3775 grub