CVE-2021-43818

Publication date 13 December 2021

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.1 · High

Score breakdown

lxml is a library for processing XML and HTML in the Python language. Prior to version 4.6.5, the HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs. Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5 to receive a patch. There are no known workarounds available.

Status

Package Ubuntu Release Status
lxml 22.04 LTS jammy
Fixed 4.7.1-1
21.10 impish
Fixed 4.6.3+dfsg-0.1ubuntu0.2
21.04 hirsute
Fixed 4.6.3-1ubuntu0.2
20.04 LTS focal
Fixed 4.5.0-1ubuntu0.5
18.04 LTS bionic
Fixed 4.2.1-1ubuntu0.6
16.04 LTS xenial
14.04 LTS trusty

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Severity score breakdown

Parameter Value
Base score 7.1 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Changed
Confidentiality Low
Integrity impact Low
Availability impact Low
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L