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.- A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SProcRenderCompositeGlyphs function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-4008)
- A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SProcXFixesCreatePointerBarrier function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-4009)
- A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SwapCreateRegister function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-4011)
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 xorg-server packages.For Debian 9 stretch, these problems have been fixed in version 2
See Also
https://packages.debian.org/source/stretch/xorg-server
https://security-tracker.debian.org/tracker/source-package/xorg-server
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: 1.3
Type: local
Agent: unix
Family: Debian Local Security Checks
Published: 12/30/2021
Updated: 4/26/2022
Supported Sensors: Frictionless Assessment Agent, Nessus Agent
Risk Information
CVSS Score Source: CVE-2021-4011
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
Temporal Vector: CVSS2#E:U/RL:OF/RC:C
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: cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*, p-cpe:2.3:a:debian:debian_linux:xdmx:*:*:*:*:*:*:*, p-cpe:2.3:a:debian:debian_linux:xdmx-tools:*:*:*:*:*:*:*, p-cpe:2.3:a:debian:debian_linux:xnest:*:*:*:*:*:*:*, p-cpe:2.3:a:debian:debian_linux:xserver-common:*:*:*:*:*:*:*, p-cpe:2.3:a:debian:debian_linux:xserver-xephyr:*:*:*:*:*:*:*, p-cpe:2.3:a:debian:debian_linux:xserver-xorg-core:*:*:*:*:*:*:*, p-cpe:2.3:a:debian:debian_linux:xserver-xorg-dev:*:*:*:*:*:*:*, p-cpe:2.3:a:debian:debian_linux:xvfb:*:*:*:*:*:*:*, p-cpe:2.3:a:debian:debian_linux:xorg-server-source:*:*:*:*:*:*:*, p-cpe:2.3:a:debian:debian_linux:xserver-xorg-legacy:*:*:*:*:*:*:*, p-cpe:2.3:a:debian:debian_linux:xwayland:*:*:*:*:*:*:*
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