CVE-2023-5574

high

Description

A use-after-free flaw was found in xorg-x11-server-Xvfb. This issue occurs in Xvfb with a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode). If the pointer is warped from a screen 1 to a screen 0, a use-after-free issue may be triggered during shutdown or reset of the Xvfb server, allowing for possible escalation of privileges or denial of service.

References

https://security.netapp.com/advisory/ntap-20231130-0004/

https://lists.x.org/archives/xorg-announce/2023-October/003430.html

https://bugzilla.redhat.com/show_bug.cgi?id=2244735

https://access.redhat.com/security/cve/CVE-2023-5574

Details

Source: Mitre, NVD

Published: 2023-10-25

Updated: 2023-12-20

Risk Information

CVSS v2

Base Score: 6

Vector: CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High