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Amazon Linux AMI : perl (ALAS-2025-1981)

medium Nessus Plugin ID 238027

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Synopsis

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

Description

The version of perl installed on the remote host is prior to 5.16.3-294.45. It is, therefore, affected by a vulnerability as referenced in the ALAS-2025-1981 advisory.

 Thread creation while a directory handle is open does a fchdir, affecting other threads (race condition) (CVE-2025-40909)

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 'yum update perl' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2025-1981.html

https://alas.aws.amazon.com/cve/html/CVE-2025-40909.html

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

Plugin Details

Severity: Medium

ID: 238027

File Name: ala_ALAS-2025-1981.nasl

Version: 1.1

Type: local

Agent: unix

Published: 6/9/2025

Updated: 6/9/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.2

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2025-40909

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:perl-extutils-embed, p-cpe:/a:amazon:linux:perl-cpan, p-cpe:/a:amazon:linux:perl-module-loaded, p-cpe:/a:amazon:linux:perl-core, p-cpe:/a:amazon:linux:perl-macros, p-cpe:/a:amazon:linux:perl-pod-escapes, p-cpe:/a:amazon:linux:perl-devel, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:perl-time-piece, p-cpe:/a:amazon:linux:perl-package-constants, p-cpe:/a:amazon:linux:perl-libs, p-cpe:/a:amazon:linux:perl-debuginfo, p-cpe:/a:amazon:linux:perl, p-cpe:/a:amazon:linux:perl-object-accessor, p-cpe:/a:amazon:linux:perl-extutils-install, p-cpe:/a:amazon:linux:perl-locale-maketext-simple, p-cpe:/a:amazon:linux:perl-tests, p-cpe:/a:amazon:linux:perl-module-corelist, p-cpe:/a:amazon:linux:perl-io-zlib, p-cpe:/a:amazon:linux:perl-extutils-cbuilder

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/9/2025

Vulnerability Publication Date: 5/30/2025

Reference Information

CVE: CVE-2025-40909