CVE-2023-0494

2023-03-2700:00:00

CWE-416

redhat

www.cve.org

x.org

vulnerability

dangling pointer

local privilege escalation

remote code execution

ssh x forwarding

8.2 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

51.8%

JSON

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.

CNA Affected

[
  {
    "vendor": "n/a",
    "product": "xorg-x11-server",
    "versions": [
      {
        "version": "xorg-server 21.1.7",
        "status": "affected"
      }
    ]
  }
]