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Debian DLA-2869-1 : xorg-server - LTS security update
high Nessus Plugin ID 156392
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Synopsis
The remote Debian host is missing one or more security-related updates.Description
The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2869 advisory.Jan-Niklas Sohn discovered that multiple input validation failures in X server extensions of the X.org X server may result in privilege escalation if the X server is running privileged. For Debian 9 stretch, these problems have been fixed in version 2:1.19.2-1+deb9u9. 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 these issues but has instead relied only on the application's self-reported version number.
Solution
Upgrade the xorg-server packages.For Debian 9 stretch, these problems have been fixed in version 2
See Also
https://security-tracker.debian.org/tracker/source-package/xorg-server
https://www.debian.org/lts/security/2021/dla-2869
https://security-tracker.debian.org/tracker/CVE-2021-4008
https://security-tracker.debian.org/tracker/CVE-2021-4009
Plugin Details
Severity: High
ID: 156392
File Name: debian_DLA-2869.nasl
Version: 1.4
Type: local
Agent: unix
Family: Debian Local Security Checks
Published: 12/30/2021
Updated: 1/24/2025
Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.3
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2021-4011
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, 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, cpe:/o:debian:debian_linux:9.0, 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: 12/29/2021
Vulnerability Publication Date: 12/17/2021