CVE-2021-43818

2021-12-1300:00:00

ubuntu.com

7.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.005 Low

EPSS

Percentile

75.4%

JSON

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.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlxml< 4.2.1-1ubuntu0.6UNKNOWN
ubuntu20.04noarchlxml< 4.5.0-1ubuntu0.5UNKNOWN
ubuntu21.04noarchlxml< 4.6.3-1ubuntu0.2UNKNOWN
ubuntu21.10noarchlxml< 4.6.3+dfsg-0.1ubuntu0.2UNKNOWN
ubuntu22.04noarchlxml< 4.7.1-1UNKNOWN
ubuntu14.04noarchlxml< 3.3.3-1ubuntu0.2+esm5) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu16.04noarchlxml< 3.5.0-1ubuntu0.4+esm2) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	lxml	< 4.2.1-1ubuntu0.6	UNKNOWN
ubuntu	20.04	noarch	lxml	< 4.5.0-1ubuntu0.5	UNKNOWN
ubuntu	21.04	noarch	lxml	< 4.6.3-1ubuntu0.2	UNKNOWN
ubuntu	21.10	noarch	lxml	< 4.6.3+dfsg-0.1ubuntu0.2	UNKNOWN
ubuntu	22.04	noarch	lxml	< 4.7.1-1	UNKNOWN
ubuntu	14.04	noarch	lxml	< 3.3.3-1ubuntu0.2+esm5) Available with Ubuntu Pro or Ubuntu Pro (Infra-only	UNKNOWN
ubuntu	16.04	noarch	lxml	< 3.5.0-1ubuntu0.4+esm2) Available with Ubuntu Pro or Ubuntu Pro (Infra-only	UNKNOWN