Amazon Linux AMI : libX11 (ALAS-2023-1895)

medium Nessus Plugin ID 186592


The remote Amazon Linux AMI host is missing a security update.


The version of libX11 installed on the remote host is prior to 1.6.0-2.2.17. It is, therefore, affected by a vulnerability as referenced in the ALAS-2023-1895 advisory.

- A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw allows a local user to consume all available system resources and cause a denial of service condition.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Run 'yum update libX11' to update your system.

See Also

Plugin Details

Severity: Medium

ID: 186592

File Name: ala_ALAS-2023-1895.nasl

Version: 1.0

Type: local

Agent: unix

Published: 12/5/2023

Updated: 12/5/2023

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

Risk Information


Risk Factor: Medium

Score: 5.1


Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2023-43786


Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:libx11, p-cpe:/a:amazon:linux:libx11-common, p-cpe:/a:amazon:linux:libx11-debuginfo, p-cpe:/a:amazon:linux:libx11-devel, cpe:/o:amazon:linux

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 11/29/2023

Vulnerability Publication Date: 10/5/2023

Reference Information

CVE: CVE-2023-43786