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.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/cve-2022-3775	Third Party Advisory
https://security.gentoo.org/glsa/202311-14
https://access.redhat.com/security/cve/cve-2022-3775	Third Party Advisory
https://security.gentoo.org/glsa/202311-14

Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

History

No history.

Information

Published : 2022-12-19 20:15

Updated : 2024-11-21 07:20

NVD link : CVE-2022-3775

Mitre link : CVE-2022-3775

CVE.ORG link : CVE-2022-3775

JSON object : View

Products Affected

gnu

grub2

redhat

enterprise_linux

CWE

CWE-787

Out-of-bounds Write

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