Amazon Linux 2023 : perl-YAML-LibYAML (ALAS2023-2025-1036)

critical Nessus Plugin ID 240310

Synopsis

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

Description

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2025-1036 advisory.

YAML-LibYAML prior to 0.903.0 for Perl uses 2-args open, allowing existing files to be modified (CVE-2025-40908)

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 perl-YAML-LibYAML --releasever 2023.7.20250623' to update your system.

Plugin Details

Severity: Critical

ID: 240310

File Name: al2023_ALAS2023-2025-1036.nasl

Version: 1.1

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 6/23/2025

Updated: 6/23/2025

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2025-40908

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:perl-yaml-libyaml, p-cpe:/a:amazon:linux:perl-yaml-libyaml-debugsource, p-cpe:/a:amazon:linux:perl-yaml-libyaml-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: 6/23/2025

Vulnerability Publication Date: 6/1/2025

Reference Information

CVE: CVE-2025-40908

Detections

Analytics