Detections
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Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : X.Org X Server vulnerabilities (USN-4656-1)

high Nessus Plugin ID 143432

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4656-1 advisory.

 Jan-Niklas Sohn discovered that the X.Org X Server XKB extension incorrectly handled certain inputs. A local attacker could possibly use this issue to escalate privileges.

Tenable has extracted the preceding description block directly from the Ubuntu 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

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-4656-1

Plugin Details

Severity: High

ID: 143432

File Name: ubuntu_USN-4656-1.nasl

Version: 1.6

Type: local

Agent: unix

Published: 12/2/2020

Updated: 8/29/2024

Supported Sensors: Agentless Assessment, Continuous 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: 6.1

Temporal Score: 4.5

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

CVSS Score Source: CVE-2020-14360

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

CVSS Score Source: CVE-2020-25712

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:xserver-common, p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core-udeb, p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-dev, p-cpe:/a:canonical:ubuntu_linux:xorg-server-source-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:xwayland-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-legacy-hwe-16.04, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:xmir, p-cpe:/a:canonical:ubuntu_linux:xvfb, p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-dev-hwe-16.04, p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-legacy, p-cpe:/a:canonical:ubuntu_linux:xmir-hwe-16.04, p-cpe:/a:canonical:ubuntu_linux:xserver-xephyr-hwe-16.04, p-cpe:/a:canonical:ubuntu_linux:xwayland, p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core-hwe-16.04, p-cpe:/a:canonical:ubuntu_linux:xorg-server-source-hwe-16.04, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-legacy-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-dev-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core, p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-xmir, p-cpe:/a:canonical:ubuntu_linux:xnest, p-cpe:/a:canonical:ubuntu_linux:xorg-server-source, p-cpe:/a:canonical:ubuntu_linux:xdmx-tools, p-cpe:/a:canonical:ubuntu_linux:xwayland-hwe-16.04, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:xserver-xephyr-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:xdmx, p-cpe:/a:canonical:ubuntu_linux:xserver-xephyr

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/1/2020

Vulnerability Publication Date: 12/1/2020

Reference Information

CVE: CVE-2020-14360, CVE-2020-25712

USN: 4656-1