Detections
Analytics

Azure Linux 3.0 Security Update: python3 (CVE-2025-4138)

high Nessus Plugin ID 242393

Synopsis

The remote Azure Linux host is missing one or more security updates.

Description

The version of python3 installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-4138 advisory.

 - Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata. You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.extract() using the filter= parameter with a value of data or tar. See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information. Note that for Python 3.14 or later the default value of filter= changed from no filtering to `data, so if you are relying on this new default behavior then your usage is also affected. Note that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it's important to avoid installing source distributions with suspicious links. (CVE-2025-4138)

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-2025-4138

Plugin Details

Severity: High

ID: 242393

File Name: azure_linux_CVE-2025-4138.nasl

Version: 1.1

Type: local

Published: 7/19/2025

Updated: 7/19/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

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

CVSS Score Source: CVE-2025-4138

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:H/I:N/A:N

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

Vulnerability Information

CPE: p-cpe:/a:microsoft:azure_linux:python3-setuptools, p-cpe:/a:microsoft:azure_linux:python3-libs, p-cpe:/a:microsoft:azure_linux:python3-pip, p-cpe:/a:microsoft:azure_linux:python3-tools, x-cpe:/o:microsoft:azure_linux, p-cpe:/a:microsoft:azure_linux:python3-devel, p-cpe:/a:microsoft:azure_linux:python3-debuginfo, p-cpe:/a:microsoft:azure_linux:python3-test, p-cpe:/a:microsoft:azure_linux:python3-curses, p-cpe:/a:microsoft:azure_linux:python3

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/8/2025

Vulnerability Publication Date: 6/3/2025

Reference Information

CVE: CVE-2025-4138

IAVA: 2025-A-0444