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Amazon Linux 2 : python38 (ALASPYTHON3.8-2023-006)

medium Nessus Plugin ID 182022

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Synopsis

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

Description

The version of python38 installed on the remote host is prior to 3.8.3-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2PYTHON3.8-2023-006 advisory.

 - Python 2.7 through 2.7.17, 3.5 through 3.5.9, 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1 allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking. (CVE-2020-8492)

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 python38' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALASPYTHON3.8-2023-006.html

https://alas.aws.amazon.com/cve/html/CVE-2020-8492.html

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

Plugin Details

Severity: Medium

ID: 182022

File Name: al2_ALASPYTHON3_8-2023-006.nasl

Version: 1.1

Type: local

Agent: unix

Published: 9/27/2023

Updated: 9/28/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.6

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

CVSS Score Source: CVE-2020-8492

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:python38-tools, p-cpe:/a:amazon:linux:python38-tkinter, p-cpe:/a:amazon:linux:python38-devel, p-cpe:/a:amazon:linux:python38-debug, p-cpe:/a:amazon:linux:python38-test, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:python38, p-cpe:/a:amazon:linux:python38-libs, p-cpe:/a:amazon:linux:python38-debuginfo

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/21/2023

Vulnerability Publication Date: 1/30/2020

Reference Information

CVE: CVE-2020-8492

IAVA: 2020-A-0103-S