Alibaba Cloud Linux 3 : 0025: python3.11 (ALINUX3-SA-2026:0025)

medium Nessus Plugin ID 297533

Synopsis

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

Description

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2026:0025 advisory.

Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

CVE-2025-12084:
When building nested elements using xml.dom.minidom methods such as appendChild() that have a dependency on _clear_id_cache() the algorithm is quadratic. Availability can be impacted when building excessively nested documents.

CVE-2025-13836:
When reading an HTTP response from a server, if no read amount is specified, the default behavior will be to use Content-Length. This allows a malicious server to cause the client to read large amounts of data into memory, potentially causing OOM or other DoS.

Tenable has extracted the preceding description block directly from the Alibaba Cloud 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: Medium

ID: 297533

File Name: alinux3_sa_2026-0025.nasl

Version: 1.1

Type: local

Family: Alibaba Cloud Linux Local Security Checks

Published: 2/2/2026

Updated: 2/2/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2025-13836

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 1.7

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

CPE: p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3.11, cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3.11-idle, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3.11-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3.11-test, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3.11-rpm-macros, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3.11-libs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3.11-tkinter, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3.11-debug

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/30/2026

Vulnerability Publication Date: 12/1/2025

Reference Information

CVE: CVE-2025-12084, CVE-2025-13836

Detections

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