Vulnerability/
CVE-2021-20220

5.8

CWE

444 79

1/2/2021

4/2/2021

23/2/2021

3/8/2024

CVE-2021-20220: XSS

First published: Mon Feb 01 2021(Updated: )

A flaw was found in Undertow. A regression in the fix for CVE-2020-10687 was found. HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS attack, or obtain sensitive information from request other than their own. The highest threat from this vulnerability is to data confidentiality and integrity.

Credit: secalert@redhat.com

Affected Software	Affected Version	How to fix
redhat/eap7-activemq-artemis	<0:2.9.0-9.redhat_00019.1.el6ea	0:2.9.0-9.redhat_00019.1.el6ea
redhat/eap7-bouncycastle	<0:1.68.0-1.redhat_00001.1.el6ea	0:1.68.0-1.redhat_00001.1.el6ea
redhat/eap7-guava-failureaccess	<0:1.0.1-1.redhat_00002.1.el6ea	0:1.0.1-1.redhat_00002.1.el6ea
redhat/eap7-guava-libraries	<0:30.1.0-1.redhat_00001.1.el6ea	0:30.1.0-1.redhat_00001.1.el6ea
redhat/eap7-hal-console	<0:3.2.13-1.Final_redhat_00001.1.el6ea	0:3.2.13-1.Final_redhat_00001.1.el6ea
redhat/eap7-ironjacamar	<0:1.4.27-1.Final_redhat_00001.1.el6ea	0:1.4.27-1.Final_redhat_00001.1.el6ea
redhat/eap7-jboss-ejb-client	<0:4.0.39-1.SP1_redhat_00001.1.el6ea	0:4.0.39-1.SP1_redhat_00001.1.el6ea
redhat/eap7-jboss-logmanager	<0:2.1.18-1.Final_redhat_00001.1.el6ea	0:2.1.18-1.Final_redhat_00001.1.el6ea
redhat/eap7-jboss-remoting	<0:5.0.20-2.SP1_redhat_00001.1.el6ea	0:5.0.20-2.SP1_redhat_00001.1.el6ea
redhat/eap7-jboss-server-migration	<0:1.7.2-5.Final_redhat_00006.1.el6ea	0:1.7.2-5.Final_redhat_00006.1.el6ea
redhat/eap7-narayana	<0:5.9.11-1.Final_redhat_00001.1.el6ea	0:5.9.11-1.Final_redhat_00001.1.el6ea
redhat/eap7-undertow	<0:2.0.34-1.SP1_redhat_00001.1.el6ea	0:2.0.34-1.SP1_redhat_00001.1.el6ea
redhat/eap7-wildfly	<0:7.3.6-1.GA_redhat_00002.1.el6ea	0:7.3.6-1.GA_redhat_00002.1.el6ea
redhat/eap7-wildfly-elytron	<0:1.10.11-1.Final_redhat_00001.1.el6ea	0:1.10.11-1.Final_redhat_00001.1.el6ea
redhat/eap7-wildfly-http-client	<0:1.0.25-1.Final_redhat_00001.1.el6ea	0:1.0.25-1.Final_redhat_00001.1.el6ea
redhat/eap7-wildfly-naming-client	<0:1.0.14-1.Final_redhat_00001.1.el6ea	0:1.0.14-1.Final_redhat_00001.1.el6ea
redhat/eap7-activemq-artemis	<0:2.9.0-9.redhat_00019.1.el7ea	0:2.9.0-9.redhat_00019.1.el7ea
redhat/eap7-bouncycastle	<0:1.68.0-1.redhat_00001.1.el7ea	0:1.68.0-1.redhat_00001.1.el7ea
redhat/eap7-guava-failureaccess	<0:1.0.1-1.redhat_00002.1.el7ea	0:1.0.1-1.redhat_00002.1.el7ea
redhat/eap7-guava-libraries	<0:30.1.0-1.redhat_00001.1.el7ea	0:30.1.0-1.redhat_00001.1.el7ea
redhat/eap7-hal-console	<0:3.2.13-1.Final_redhat_00001.1.el7ea	0:3.2.13-1.Final_redhat_00001.1.el7ea
redhat/eap7-ironjacamar	<0:1.4.27-1.Final_redhat_00001.1.el7ea	0:1.4.27-1.Final_redhat_00001.1.el7ea
redhat/eap7-jboss-ejb-client	<0:4.0.39-1.SP1_redhat_00001.1.el7ea	0:4.0.39-1.SP1_redhat_00001.1.el7ea
redhat/eap7-jboss-logmanager	<0:2.1.18-1.Final_redhat_00001.1.el7ea	0:2.1.18-1.Final_redhat_00001.1.el7ea
redhat/eap7-jboss-remoting	<0:5.0.20-2.SP1_redhat_00001.1.el7ea	0:5.0.20-2.SP1_redhat_00001.1.el7ea
redhat/eap7-jboss-server-migration	<0:1.7.2-5.Final_redhat_00006.1.el7ea	0:1.7.2-5.Final_redhat_00006.1.el7ea
redhat/eap7-narayana	<0:5.9.11-1.Final_redhat_00001.1.el7ea	0:5.9.11-1.Final_redhat_00001.1.el7ea
redhat/eap7-undertow	<0:2.0.34-1.SP1_redhat_00001.1.el7ea	0:2.0.34-1.SP1_redhat_00001.1.el7ea
redhat/eap7-wildfly	<0:7.3.6-1.GA_redhat_00002.1.el7ea	0:7.3.6-1.GA_redhat_00002.1.el7ea
redhat/eap7-wildfly-elytron	<0:1.10.11-1.Final_redhat_00001.1.el7ea	0:1.10.11-1.Final_redhat_00001.1.el7ea
redhat/eap7-wildfly-http-client	<0:1.0.25-1.Final_redhat_00001.1.el7ea	0:1.0.25-1.Final_redhat_00001.1.el7ea
redhat/eap7-wildfly-naming-client	<0:1.0.14-1.Final_redhat_00001.1.el7ea	0:1.0.14-1.Final_redhat_00001.1.el7ea
redhat/eap7-activemq-artemis	<0:2.9.0-9.redhat_00019.1.el8ea	0:2.9.0-9.redhat_00019.1.el8ea
redhat/eap7-bouncycastle	<0:1.68.0-1.redhat_00001.1.el8ea	0:1.68.0-1.redhat_00001.1.el8ea
redhat/eap7-guava-failureaccess	<0:1.0.1-1.redhat_00002.1.el8ea	0:1.0.1-1.redhat_00002.1.el8ea
redhat/eap7-guava-libraries	<0:30.1.0-1.redhat_00001.1.el8ea	0:30.1.0-1.redhat_00001.1.el8ea
redhat/eap7-hal-console	<0:3.2.13-1.Final_redhat_00001.1.el8ea	0:3.2.13-1.Final_redhat_00001.1.el8ea
redhat/eap7-ironjacamar	<0:1.4.27-1.Final_redhat_00001.1.el8ea	0:1.4.27-1.Final_redhat_00001.1.el8ea
redhat/eap7-jboss-ejb-client	<0:4.0.39-1.SP1_redhat_00001.1.el8ea	0:4.0.39-1.SP1_redhat_00001.1.el8ea
redhat/eap7-jboss-logmanager	<0:2.1.18-1.Final_redhat_00001.1.el8ea	0:2.1.18-1.Final_redhat_00001.1.el8ea
redhat/eap7-jboss-remoting	<0:5.0.20-2.SP1_redhat_00001.1.el8ea	0:5.0.20-2.SP1_redhat_00001.1.el8ea
redhat/eap7-jboss-server-migration	<0:1.7.2-5.Final_redhat_00006.1.el8ea	0:1.7.2-5.Final_redhat_00006.1.el8ea
redhat/eap7-narayana	<0:5.9.11-1.Final_redhat_00001.1.el8ea	0:5.9.11-1.Final_redhat_00001.1.el8ea
redhat/eap7-undertow	<0:2.0.34-1.SP1_redhat_00001.1.el8ea	0:2.0.34-1.SP1_redhat_00001.1.el8ea
redhat/eap7-wildfly	<0:7.3.6-1.GA_redhat_00002.1.el8ea	0:7.3.6-1.GA_redhat_00002.1.el8ea
redhat/eap7-wildfly-elytron	<0:1.10.11-1.Final_redhat_00001.1.el8ea	0:1.10.11-1.Final_redhat_00001.1.el8ea
redhat/eap7-wildfly-http-client	<0:1.0.25-1.Final_redhat_00001.1.el8ea	0:1.0.25-1.Final_redhat_00001.1.el8ea
redhat/eap7-wildfly-naming-client	<0:1.0.14-1.Final_redhat_00001.1.el8ea	0:1.0.14-1.Final_redhat_00001.1.el8ea
redhat/Undertow	<2.2.0.	2.2.0.
redhat/Undertow	<2.1.6.	2.1.6.
redhat/Undertow	<2.0.34.	2.0.34.
Red Hat Undertow	<2.0.34
Red Hat Undertow	>=2.1.0<2.1.6
NetApp Active IQ Unified Manager
NetApp Active IQ Unified Manager for VMware vSphere
NetApp Active IQ Unified Manager
NetApp OnCommand Workflow Automation

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Frequently Asked Questions

What is the severity of CVE-2021-20220?
CVE-2021-20220 has been classified as a moderate severity vulnerability.
How do I fix CVE-2021-20220?
To remediate CVE-2021-20220, you should update the affected packages to the specified versions or later released by Red Hat.
Which versions of Undertow are affected by CVE-2021-20220?
Versions of Undertow prior to 2.2.0, 2.1.6, and 2.0.34 are affected by CVE-2021-20220.
Can CVE-2021-20220 lead to an XSS attack?
Yes, CVE-2021-20220 could allow an attacker to perform cross-site scripting (XSS) through HTTP request smuggling.
What types of software are impacted by CVE-2021-20220?
CVE-2021-20220 affects various Red Hat products including eap7-activemq-artemis, eap7-bouncycastle, and Undertow.

collector/redhat-cve
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agent/first-publish-date
agent/author
agent/weakness
agent/severity
agent/references
agent/description
collector/redhat-bugzilla
source/Red Hat
alias/CVE-2021-20220
agent/software-canonical-lookup
collector/mitre-cve
source/MITRE
agent/last-modified-date
agent/event
agent/trending
agent/source
agent/softwarecombine
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
package-manager/redhat
vendor/redhat
canonical/red hat undertow
version/red hat undertow/2.1.0
vendor/netapp
canonical/netapp active iq unified manager
canonical/netapp active iq unified manager for vmware vsphere
canonical/netapp oncommand workflow automation

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