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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
X.Org ≫ X Server Version < 21.1.7
Fedoraproject ≫ Fedora Version 36
Fedoraproject ≫ Fedora Version 37
Redhat ≫ Enterprise Linux Version 8.0
Redhat ≫ Enterprise Linux Version 8.1
Redhat ≫ Enterprise Linux Version 9.0
Redhat ≫ Enterprise Linux Aus Version 8.4
Redhat ≫ Enterprise Linux Aus Version 8.6
Redhat ≫ Enterprise Linux Eus Version 8.4
Redhat ≫ Enterprise Linux Eus Version 8.6
Redhat ≫ Enterprise Linux Eus Version 9.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.9% 0.549
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 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
CISA-ADP 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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://security.gentoo.org/glsa/202305-30
https://bugzilla.redhat.com/show_bug.cgi?id=2165995
Third Party Advisory
Issue Tracking
https://gitlab.freedesktop.org/xorg/xserver/-/commit/0ba6d8c37071131a49790243cdac55392ecf71ec
Patch
https://lists.x.org/archives/xorg-announce/2023-February/003320.html
Vendor Advisory
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