#VU70433 Stack-based buffer overflow in X.org Server - CVE-2022-46340

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Main Vulnerability Database Vulnerabilities #VU70433

#VU70433 Stack-based buffer overflow in X.org Server - CVE-2022-46340

Published: December 20, 2022 / Updated: January 2, 2023


Vulnerability identifier: #VU70433
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-46340
CWE-ID: CWE-121
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
X.org Server
Software vendor:
X.org

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error  within the swap handler for the XTestFakeInput request of the XTest extension if GenericEvents with lengths larger than 32 bytes are sent through a the XTestFakeInput request. A local user can trigger a stack-based buffer overflow and execute arbitrary code with elevated privileges.



Remediation

Install updates from vendor's website.

External links