Debian DSA-5433-1 : libx11 - security update

high Nessus Plugin ID 177478

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Synopsis

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

Description

The remote Debian 11 / 12 host has packages installed that are affected by a vulnerability as referenced in the dsa-5433 advisory.

Gregory James Duck reported that missing input validation in various functions provided by libx11, the X11 client-side library, may result in denial of service. For the oldstable distribution (bullseye), this problem has been fixed in version 2:1.7.2-1+deb11u1. For the stable distribution (bookworm), this problem has been fixed in version 2:1.8.4-2+deb12u1. We recommend that you upgrade your libx11 packages. For the detailed security status of libx11 please refer to its security tracker page at: https://security- tracker.debian.org/tracker/libx11

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 libx11 packages.

For the stable distribution (bookworm), this problem has been fixed in version 2

Plugin Details

Severity: High

ID: 177478

File Name: debian_DSA-5433.nasl

Version: 1.3

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 6/21/2023

Updated: 1/24/2025

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2023-3138

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:libx11-6, p-cpe:/a:debian:debian_linux:libx11-data, p-cpe:/a:debian:debian_linux:libx11-doc, p-cpe:/a:debian:debian_linux:libx11-xcb-dev, p-cpe:/a:debian:debian_linux:libx11-xcb1, p-cpe:/a:debian:debian_linux:libx11-6-udeb, p-cpe:/a:debian:debian_linux:libx11-dev, cpe:/o:debian:debian_linux:12.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/21/2023

Vulnerability Publication Date: 6/16/2023

Reference Information

CVE: CVE-2023-3138

Detections

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