Amazon Linux 2 : python3-tornado (ALAS-2025-2889)

high Nessus Plugin ID 238349

Language:

Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of python3-tornado installed on the remote host is prior to 5.0.2-4. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2025-2889 advisory.

Tornado is a Python web framework and asynchronous networking library. When Tornado's ``multipart/form- data`` parser encounters certain errors, it logs a warning but continues trying to parse the remainder of the data. This allows remote attackers to generate an extremely high volume of logs, constituting a DoS attack. This DoS is compounded by the fact that the logging subsystem is synchronous. All versions of Tornado prior to 6.5.0 are affected. The vulnerable parser is enabled by default. Upgrade to Tornado version 6.50 to receive a patch. As a workaround, risk can be mitigated by blocking `Content-Type:
multipart/form-data` in a proxy. (CVE-2025-47287)

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 'yum update python3-tornado' to update your system.

Plugin Details

Severity: High

ID: 238349

File Name: al2_ALAS-2025-2889.nasl

Version: 1.1

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 6/12/2025

Updated: 6/12/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, 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-2025-47287

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-tornado-doc, p-cpe:/a:amazon:linux:python3-tornado, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:python3-tornado-debuginfo

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/12/2025

Vulnerability Publication Date: 5/15/2025

Reference Information

CVE: CVE-2025-47287

Detections

Analytics