TencentOS Server 3: python3 (TSSA-2025:0559)

critical Nessus Plugin ID 276070

Synopsis

The remote TencentOS Server 3 host is missing one or more security updates.

Description

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2025:0559 advisory.

Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

CVE-2024-12718:
Allows modifying some file metadata (e.g. last modified) with filter=dataor file permissions (chmod) with filter=tarof files outside the extraction directory.
You are affected by this vulnerability if using the tarfilemodule to extract untrusted tar archives using TarFile.extractall()or TarFile.extract()using the filter=parameter with a value of dataor tar. See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information. Only Python versions 3.12 or later are affected by these vulnerabilities, earlier versions don't include the extraction filter feature.

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:
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 tarfilemodule to extract untrusted tar archives using TarFile.extractall()or TarFile.extract()using the filter=parameter with a value of dataor 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-2025-4330:
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 tarfilemodule to extract untrusted tar archives using TarFile.extractall()or TarFile.extract()using the filter=parameter with a value of dataor 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-2025-4435:
When using a TarFile.errorlevel = 0and extracting with a filter the documented behavior is that any filtered members would be skipped and not extracted. However the actual behavior of TarFile.errorlevel = 0in affected versions is that the member would still be extracted and not skipped.

CVE-2025-4517:
Allows arbitrary filesystem writes outside the extraction directory during extraction with filter=data.

You are affected by this vulnerability if using the tarfilemodule to extract untrusted tar archives using TarFile.extractall()or TarFile.extract()using the filter=parameter with a value of dataor 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.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

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

Solution

Update the affected packages.

Plugin Details

Severity: Critical

ID: 276070

File Name: tencentos_TSSA_2025_0559.nasl

Version: 1.1

Type: local

Family: Tencent Local Security Checks

Published: 11/20/2025

Updated: 11/20/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

CVSS v2

Risk Factor: High

Base Score: 9.7

Temporal Score: 7.2

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

CVSS Score Source: CVE-2025-4517

CVSS v3

Risk Factor: Critical

Base Score: 9.4

Temporal Score: 8.2

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

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

CVSS v4

Risk Factor: Critical

Base Score: 10

Threat Score: 9.1

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS Score Source: CVE-2024-12718

Vulnerability Information

CPE: cpe:/o:tencent:tencentos_server:3, p-cpe:/a:tencent:tencentos_server:python3

Required KB Items: Host/local_checks_enabled, Host/etc/os-release, Host/TencentOS/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 7/1/2025

Vulnerability Publication Date: 6/3/2025

Reference Information

CVE: CVE-2024-12718, CVE-2025-4138, CVE-2025-4330, CVE-2025-4435, CVE-2025-4517

IAVA: 2025-A-0444

Detections

Analytics