Detections
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Amazon Linux 2023 : libxml2, libxml2-devel, libxml2-static (ALAS2023-2025-1019)

high Nessus Plugin ID 240319

Synopsis

The remote Amazon Linux 2023 host is missing a security update.

Description

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2025-1019 advisory.

 A flaw was found in libxml2's xmlBuildQName function, where integer overflows in buffer size calculations can lead to a stack-based buffer overflow. This issue can result in memory corruption or a denial of service when processing crafted input. (CVE-2025-6021)

Tenable has extracted the preceding description block directly from the tested product 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

Run 'dnf update libxml2 --releasever 2023.7.20250623' to update your system.

See Also

https://alas.aws.amazon.com/AL2023/ALAS-2025-1019.html

https://alas.aws.amazon.com/cve/html/CVE-2025-6021.html

https://alas.aws.amazon.com/faqs.html

Plugin Details

Severity: High

ID: 240319

File Name: al2023_ALAS2023-2025-1019.nasl

Version: 1.1

Type: local

Agent: unix

Published: 6/23/2025

Updated: 6/23/2025

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

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-2025-6021

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: p-cpe:/a:amazon:linux:libxml2-devel, p-cpe:/a:amazon:linux:libxml2-debuginfo, p-cpe:/a:amazon:linux:python3-libxml2, p-cpe:/a:amazon:linux:libxml2-debugsource, p-cpe:/a:amazon:linux:libxml2, p-cpe:/a:amazon:linux:python3-libxml2-debuginfo, cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:libxml2-static

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/23/2025

Vulnerability Publication Date: 6/12/2025

Reference Information

CVE: CVE-2025-6021