CVE-2023-0494
Public on 2023-02-07
Modified on 2024-04-04
Description
A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions.
Severity
Important
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | tigervnc | 2023-05-11 | ALAS-2023-1746 | Fixed |
| Amazon Linux 2 - Core | tigervnc | 2024-05-23 | ALAS2-2024-2558 | Fixed |
| Amazon Linux 1 | xorg-x11-server | 2023-03-17 | ALAS-2023-1702 | Fixed |
| Amazon Linux 2 - Core | xorg-x11-server | 2023-03-02 | ALAS2-2023-1982 | Fixed |
| Amazon Linux 2023 | xorg-x11-server | 2023-03-11 | ALAS2023-2023-131 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | CVSSv3 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |