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Amazon Linux AMI : python-twisted-conch (ALAS-2022-1592)

high Nessus Plugin ID 161994

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Synopsis

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

Description

It is, therefore, affected by a vulnerability as referenced in the ALAS-2022-1592 advisory.

 - Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0, Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH version identifier. This ends up with a buffer using all the available memory. The attach is a simple as `nc -rv localhost 22 < /dev/zero`. A patch is available in version 22.2.0. There are currently no known workarounds. (CVE-2022-21716)

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 python-twisted-conch' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2022-1592.html

https://alas.aws.amazon.com/cve/html/CVE-2022-21716.html

Plugin Details

Severity: High

ID: 161994

File Name: ala_ALAS-2022-1592.nasl

Version: 1.3

Type: local

Agent: unix

Published: 6/10/2022

Updated: 10/25/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2022-21716

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:python26-twisted-conch, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:python27-twisted-conch

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: 5/31/2022

Vulnerability Publication Date: 3/3/2022

Reference Information

CVE: CVE-2022-21716