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Amazon Linux 2023 : python3, python3-devel, python3-idle (ALAS2023-2025-1146)

high Nessus Plugin ID 251371

Synopsis

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

Description

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2025-1146 advisory.

 There is a defect in the CPython tarfile module affecting the TarFile extraction and entry enumeration APIs. The tar implementation would process tar archives with negative offsets without error, resulting in an infinite loop and deadlock during the parsing of maliciously crafted tar archives.

 This vulnerability can be mitigated by including the following patch after importing the tarfile module:
 https://gist.github.com/sethmlarson/1716ac5b82b73dbcbf23ad2eff8b33e1 (CVE-2025-8194)

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 python3.9 --releasever 2023.8.20250818' to update your system.

See Also

https://alas.aws.amazon.com//AL2023/ALAS2023-2025-1146.html

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

https://explore.alas.aws.amazon.com/CVE-2025-8194.html

Plugin Details

Severity: High

ID: 251371

File Name: al2023_ALAS2023-2025-1146.nasl

Version: 1.1

Type: local

Agent: unix

Published: 8/18/2025

Updated: 8/18/2025

Supported Sensors: Continuous Assessment, Nessus Agent, 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-2025-8194

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:python3-idle, p-cpe:/a:amazon:linux:python-unversioned-command, p-cpe:/a:amazon:linux:python3, p-cpe:/a:amazon:linux:python3-test, p-cpe:/a:amazon:linux:python3.9-debuginfo, p-cpe:/a:amazon:linux:python3-devel, cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:python3-debug, p-cpe:/a:amazon:linux:python3-libs, p-cpe:/a:amazon:linux:python3-tkinter, p-cpe:/a:amazon:linux:python3.9-debugsource

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/18/2025

Vulnerability Publication Date: 7/28/2025

Reference Information

CVE: CVE-2025-8194