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Debian dla-3372 : xdmx - security update

high Nessus Plugin ID 173779

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Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dla-3372 advisory.

 - ------------------------------------------------------------------------- Debian LTS Advisory DLA-3372-1 [email protected] https://www.debian.org/lts/security/ Thorsten Alteholz March 29, 2023 https://wiki.debian.org/LTS
 - -------------------------------------------------------------------------

 Package : xorg-server Version : 2:1.20.4-1+deb10u9 CVE ID : CVE-2023-1393


 Jan-Niklas Sohn discovered that a use-after-free flaw in the Composite extension of the X.org X server may result in privilege escalation if the X server is running under the root user.


 For Debian 10 buster, this problem has been fixed in version 2:1.20.4-1+deb10u9.

 We recommend that you upgrade your xorg-server packages.

 For the detailed security status of xorg-server please refer to its security tracker page at:
 https://security-tracker.debian.org/tracker/xorg-server

 Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the xdmx packages.

See Also

https://security-tracker.debian.org/tracker/source-package/xorg-server

https://security-tracker.debian.org/tracker/CVE-2023-1393

https://packages.debian.org/source/buster/xorg-server

Plugin Details

Severity: High

ID: 173779

File Name: debian_DLA-3372.nasl

Version: 1.2

Type: local

Agent: unix

Published: 4/3/2023

Updated: 1/22/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2023-1393

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/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:debian:debian_linux:xnest, p-cpe:/a:debian:debian_linux:xserver-xorg-core, cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:xdmx, p-cpe:/a:debian:debian_linux:xwayland, p-cpe:/a:debian:debian_linux:xdmx-tools, p-cpe:/a:debian:debian_linux:xserver-common, p-cpe:/a:debian:debian_linux:xvfb, p-cpe:/a:debian:debian_linux:xserver-xephyr, p-cpe:/a:debian:debian_linux:xserver-xorg-dev, p-cpe:/a:debian:debian_linux:xorg-server-source, p-cpe:/a:debian:debian_linux:xserver-xorg-legacy

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 3/29/2023

Vulnerability Publication Date: 3/29/2023

Reference Information

CVE: CVE-2023-1393