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CBL Mariner 2.0 Security Update: perl (CVE-2025-40909)

medium Nessus Plugin ID 243022

Synopsis

The remote CBL Mariner host is missing one or more security updates.

Description

The version of perl installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-40909 advisory.

 - Perl threads have a working directory race condition where file operations May target unintended paths. If a directory handle is open at thread creation, the process-wide current working directory is temporarily changed in order to clone that handle for the new thread, which is visible from any third (or more) thread already running. This May lead to unintended operations such as loading code or accessing files from unexpected locations, which a local attacker May be able to exploit. The bug was introduced in commit 11a11ecf4bea72b17d250cfb43c897be1341861e and released in Perl version 5.13.6 (CVE-2025-40909)

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

Solution

Update the affected packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2025-40909

Plugin Details

Severity: Medium

ID: 243022

File Name: mariner_CVE-2025-40909.nasl

Version: 1.1

Type: local

Published: 7/30/2025

Updated: 7/30/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.2

CVSS v2

Risk Factor: Medium

Base Score: 5.2

Temporal Score: 3.8

Vector: CVSS2#AV:L/AC:H/Au:N/C:C/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: x-cpe:/o:microsoft:cbl-mariner, p-cpe:/a:microsoft:cbl-mariner:perl-app-cpanminus

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/8/2025

Vulnerability Publication Date: 5/30/2025

Reference Information

CVE: CVE-2025-40909