Amazon Linux 2 : libX11 (ALAS-2023-2296)

high Nessus Plugin ID 183485

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of libX11 installed on the remote host is prior to 1.6.7-3. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2023-2296 advisory.

- A vulnerability was found in libX11 due to a boundary condition within the _XkbReadKeySyms() function.
This flaw allows a local user to trigger an out-of-bounds read error and read the contents of memory on the system. (CVE-2023-43785)

- A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function. This flaw allows a local user to trigger an integer overflow and execute arbitrary code with elevated privileges. (CVE-2023-43787)

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

Solution

Run 'yum update libX11' to update your system.

Plugin Details

Severity: High

ID: 183485

File Name: al2_ALAS-2023-2296.nasl

Version: 1.0

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 10/20/2023

Updated: 10/20/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, 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-2023-43787

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:amazon:linux:2, p-cpe:/a:amazon:linux:libx11, p-cpe:/a:amazon:linux:libx11-common, p-cpe:/a:amazon:linux:libx11-devel, p-cpe:/a:amazon:linux:libx11-debuginfo

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/12/2023

Vulnerability Publication Date: 10/4/2023

Reference Information

CVE: CVE-2023-43785, CVE-2023-43787

Detections

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