Detections
Analytics

Ubuntu 16.04 ESM / 18.04 ESM : X.Org X Server vulnerabilities (USN-6453-2)

high Nessus Plugin ID 184087

Language:

Synopsis

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

Description

The remote Ubuntu 16.04 ESM / 18.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6453-2 advisory.

 - A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible escalation of privileges or denial of service. (CVE-2023-5367)

 - A use-after-free flaw was found in the xorg-x11-server. An X server crash may occur in 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 within a window on one screen to the root window of the other screen and if the original window is destroyed followed by another window being destroyed. (CVE-2023-5380)

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-6453-2

Plugin Details

Severity: High

ID: 184087

File Name: ubuntu_USN-6453-2.nasl

Version: 1.2

Type: local

Agent: unix

Published: 10/31/2023

Updated: 11/3/2023

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, 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-2023-5367

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/31/2023

Vulnerability Publication Date: 10/25/2023

Reference Information

CVE: CVE-2023-5367, CVE-2023-5380

USN: 6453-2