7.8

CVE-2023-0494

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.

Data is provided by the National Vulnerability Database (NVD)
X.Org ≫ X Server Version < 21.1.7
Fedoraproject ≫ Fedora Version36
Fedoraproject ≫ Fedora Version37
Redhat ≫ Enterprise Linux Version8.0
Redhat ≫ Enterprise Linux Version8.1
Redhat ≫ Enterprise Linux Version9.0
Redhat ≫ Enterprise Linux Aus Version8.4
Redhat ≫ Enterprise Linux Aus Version8.6
Redhat ≫ Enterprise Linux Eus Version8.4
Redhat ≫ Enterprise Linux Eus Version8.6
Redhat ≫ Enterprise Linux Eus Version9.0
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.58% 0.678
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
134c704f-9b21-4f2e-91b3-4a467353bcc0 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://bugzilla.redhat.com/show_bug.cgi?id=2165995
Third Party Advisory
Issue Tracking