Detections
Analytics

Amazon Linux 2022 : python3-lxml (ALAS2022-2022-178)

high Nessus Plugin ID 167009

Language:

Synopsis

The remote Amazon Linux 2022 host is missing a security update.

Description

It is, therefore, affected by a vulnerability as referenced in the ALAS2022-2022-178 advisory.

 There's a flaw in python-lxml's HTML Cleaner component, which is responsible for sanitizing HTML and Javascript. An attacker who is able to submit a crafted payload to a web service using python-lxml's HTML Cleaner may be able to trigger script execution in clients such as web browsers. This can occur because the HTML Cleaner did not remove scripts within SVG images in data URLs such as <img src=>. XSS can result in impacts to the integrity and availability of the web page, as well as a potential impact to data confidentiality in some circumstances. (CVE-2021-43818)

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 'dnf update python-lxml --releasever=2022.0.20221102' to update your system.

See Also

https://alas.aws.amazon.com/AL2022/ALAS-2022-178.html

https://alas.aws.amazon.com/cve/html/CVE-2021-43818.html

Plugin Details

Severity: High

ID: 167009

File Name: al2022_ALAS2022-2022-178.nasl

Version: 1.3

Type: local

Agent: unix

Published: 11/4/2022

Updated: 12/11/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.0

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2021-43818

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

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

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

Vulnerability Information

CPE: cpe:/o:amazon:linux:2022, p-cpe:/a:amazon:linux:python3-lxml-debuginfo, p-cpe:/a:amazon:linux:python3-lxml, p-cpe:/a:amazon:linux:python-lxml-debugsource

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/1/2022

Vulnerability Publication Date: 12/13/2021

Reference Information

CVE: CVE-2021-43818