Heap-based buffer overflow in X.org Server and Xwayland - CVE-2023-6816
Published: January 16, 2024 / Updated: February 12, 2024
Vulnerability identifier: #VU85447
CSH Severity: Low
CVSS v4.0: 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-2023-6816
CWE-ID: CWE-122
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: X.org
Affected software:
X.org Server
Xwayland
X.org Server
Xwayland
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the DeviceFocusEvent and ProcXIQueryPointer functions. A local user can trigger a heap-based buffer overflow and execute arbitrary code on the target system.
How to mitigate CVE-2023-6816
Install updates from vendor's website.