Out-of-bounds write in grub - CVE-2022-3775

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Main Vulnerability Database Vulnerabilities #VU69395

Out-of-bounds write in grub - CVE-2022-3775

Published: November 16, 2022 / Updated: October 5, 2023


Vulnerability identifier: #VU69395
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-3775
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
grub
Software vendor:
GNU

Description

The vulnerability allows an attacker to crash the system.

The vulnerability exists due to a boundary error when rendering certain unicode sequences in grub2 font code. An attacker with physical access to device can trigger an out-of-bounds write and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

External links