Linux Distros Unpatched Vulnerability : CVE-2023-5574

high Nessus Plugin ID 227388

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

- 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.
(CVE-2023-5574)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: High

ID: 227388

File Name: unpatched_CVE_2023_5574.nasl

Version: 1.2

Type: local

Agent: unix

Family: Misc.

Published: 3/5/2025

Updated: 8/18/2025

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:P

CVSS Score Source: CVE-2023-5574

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.1

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xwayland, cpe:/o:debian:debian_linux:11.0, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-devel, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:centos:centos:xorg-x11-server-common, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:centos:centos:xorg-x11-server-xorg, p-cpe:/a:canonical:ubuntu_linux:xorg-server, p-cpe:/a:canonical:ubuntu_linux:xorg, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-common, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:canonical:ubuntu_linux:xorg-server-hwe-16.04, p-cpe:/a:centos:centos:xorg-x11-server-xvfb, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xnest, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-source, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:canonical:ubuntu_linux:xorg-server-hwe-18.04, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:centos:centos:8, p-cpe:/a:centos:centos:xorg-x11-server-source, cpe:/o:redhat:enterprise_linux:8, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xephyr, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xorg, p-cpe:/a:centos:centos:xorg-x11-server-devel, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xdmx, p-cpe:/a:centos:centos:xorg-x11-server, cpe:/o:canonical:ubuntu_linux:25.04, cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:xorg-x11-server-xdmx, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server, p-cpe:/a:centos:centos:xorg-x11-server-xephyr, p-cpe:/a:debian:debian_linux:xorg-server, p-cpe:/a:centos:centos:xorg-x11-server-xnest, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:centos:centos:xorg-x11-server-xwayland, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xvfb

Required KB Items: Host/OS/identifier, Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 10/25/2023

Reference Information

CVE: CVE-2023-5574

Detections

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