high
8.1
CWE
502 20
Advisory Published
CVE Published
Advisory Published
Updated

CVE-2021-4104: Deserialization of untrusted data in JMSAppender in Apache Log4j 1.2

First published: Fri Dec 10 2021(Updated: )

JMSAppender in Log4j 1.2 is vulnerable to deserialization of untrusted data when the attacker has write access to the Log4j configuration. The attacker can provide TopicBindingName and TopicConnectionFactoryBindingName configurations causing JMSAppender to perform JNDI requests that result in remote code execution in a similar fashion to CVE-2021-44228. Note this issue only affects Log4j 1.2 when specifically configured to use JMSAppender, which is not the default. Apache Log4j 1.2 reached end of life in August 2015. Users should upgrade to Log4j 2 as it addresses numerous other issues from the previous versions.

Credit: security@apache.org secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/log4j<0:1.2.14-6.5.el6_10
0:1.2.14-6.5.el6_10
redhat/log4j<0:1.2.17-17.el7_4
0:1.2.17-17.el7_4
redhat/log4j<0:1.2.17-16.el7_3
0:1.2.17-16.el7_3
redhat/log4j-eap6<0:1.2.17-3.redhat_00008.1.ep6.el6
0:1.2.17-3.redhat_00008.1.ep6.el6
redhat/log4j-jboss-logmanager<0:1.1.4-3.Final_redhat_00002.1.ep6.el6
0:1.1.4-3.Final_redhat_00002.1.ep6.el6
redhat/jboss-as-appclient<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jbossas-appclient<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jbossas-bundles<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-cli<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-client-all<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-clustering<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-cmp<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-configadmin<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-connector<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-controller<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-controller-client<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jbossas-core<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-core-security<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-deployment-repository<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-deployment-scanner<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jbossas-domain<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-domain-http<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-domain-management<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-ee<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-ee-deployment<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-ejb3<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-embedded<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-jacorb<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jbossas-javadocs<0:7.5.24-1.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-jaxr<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-jaxrs<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-jdr<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-jmx<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-jpa<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-jsf<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-jsr77<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-logging<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-mail<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-management-client-content<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-messaging<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-modcluster<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jbossas-modules-eap<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-naming<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-network<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-osgi<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-osgi-configadmin<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-osgi-service<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-picketlink<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-platform-mbean<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-pojo<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-process-controller<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jbossas-product-eap<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-protocol<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-remoting<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-sar<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jboss-as-security<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-server<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jbossas-standalone<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-system-jmx<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-threads<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-transactions<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-version<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-web<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-webservices<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jbossas-welcome-content-eap<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-weld<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
0:7.5.24-2.Final_redhat_00001.1.ep6.el6
redhat/jboss-as-xts<0:7.5.24-2.Final_redhat_00001.1.ep6.el6
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redhat/jbossts<1:4.17.45-2.Final_redhat_2.1.ep6.el6
1:4.17.45-2.Final_redhat_2.1.ep6.el6
redhat/jbossweb<0:7.5.32-2.Final_redhat_1.2.ep6.el6
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redhat/log4j-eap6<0:1.2.17-3.redhat_00008.1.ep6.el7
0:1.2.17-3.redhat_00008.1.ep6.el7
redhat/log4j-jboss-logmanager<0:1.1.4-3.Final_redhat_00002.1.ep6.el7
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redhat/jboss-as-appclient<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jbossas-appclient<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jbossas-bundles<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-cli<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-client-all<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-clustering<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-cmp<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-configadmin<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-connector<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-controller<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-controller-client<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jbossas-core<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-core-security<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-deployment-repository<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-deployment-scanner<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jbossas-domain<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-domain-http<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-domain-management<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-ee<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-ee-deployment<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-ejb3<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-jacorb<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jbossas-javadocs<0:7.5.24-1.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-jaxr<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-jaxrs<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-jdr<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-jmx<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-jpa<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-jsf<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-logging<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-messaging<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-modcluster<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-pojo<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-process-controller<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jbossas-product-eap<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-protocol<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-remoting<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-sar<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-security<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jboss-as-server<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
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redhat/jbossas-standalone<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
0:7.5.24-2.Final_redhat_00001.1.ep6.el7
redhat/jboss-as-system-jmx<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
0:7.5.24-2.Final_redhat_00001.1.ep6.el7
redhat/jboss-as-threads<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
0:7.5.24-2.Final_redhat_00001.1.ep6.el7
redhat/jboss-as-transactions<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
0:7.5.24-2.Final_redhat_00001.1.ep6.el7
redhat/jboss-as-version<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
0:7.5.24-2.Final_redhat_00001.1.ep6.el7
redhat/jboss-as-web<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
0:7.5.24-2.Final_redhat_00001.1.ep6.el7
redhat/jboss-as-webservices<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
0:7.5.24-2.Final_redhat_00001.1.ep6.el7
redhat/jbossas-welcome-content-eap<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
0:7.5.24-2.Final_redhat_00001.1.ep6.el7
redhat/jboss-as-weld<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
0:7.5.24-2.Final_redhat_00001.1.ep6.el7
redhat/jboss-as-xts<0:7.5.24-2.Final_redhat_00001.1.ep6.el7
0:7.5.24-2.Final_redhat_00001.1.ep6.el7
redhat/jbossts<1:4.17.45-2.Final_redhat_2.1.ep6.el7
1:4.17.45-2.Final_redhat_2.1.ep6.el7
redhat/jbossweb<0:7.5.32-2.Final_redhat_1.2.ep6.el7
0:7.5.32-2.Final_redhat_1.2.ep6.el7
redhat/eap7-log4j-jboss-logmanager<0:1.2.2-1.Final_redhat_00002.1.el8ea
0:1.2.2-1.Final_redhat_00002.1.el8ea
redhat/eap7-log4j<0:2.17.1-1.redhat_00001.1.el8ea
0:2.17.1-1.redhat_00001.1.el8ea
redhat/eap7-log4j-jboss-logmanager<0:1.2.2-1.Final_redhat_00002.1.el7ea
0:1.2.2-1.Final_redhat_00002.1.el7ea
redhat/eap7-log4j<0:2.17.1-1.redhat_00001.1.el7ea
0:2.17.1-1.redhat_00001.1.el7ea
redhat/tomcat7<0:7.0.70-46.ep7.el7
0:7.0.70-46.ep7.el7
redhat/tomcat8<0:8.0.36-49.ep7.el7
0:8.0.36-49.ep7.el7
redhat/tomcat-native<0:1.2.23-26.redhat_26.ep7.el7
0:1.2.23-26.redhat_26.ep7.el7
redhat/rh-sso7-keycloak<0:15.0.4-1.redhat_00003.1.el7
0:15.0.4-1.redhat_00003.1.el7
redhat/rh-sso7-keycloak<0:15.0.4-1.redhat_00003.1.el8
0:15.0.4-1.redhat_00003.1.el8
redhat/rh-maven36-log4j12<0:1.2.17-23.3.el7
0:1.2.17-23.3.el7
redhat/snmp4j<0:3.6.4-0.1.el8e
0:3.6.4-0.1.el8e
redhat/redhat-sso<7-sso75-openshift-rhel8
7-sso75-openshift-rhel8
maven/org.zenframework.z8.dependencies.commons:log4j-1.2.17<=2.0
maven/log4j:log4j>=1.2.0<=1.2.17
redhat/log4j<2.15.0
2.15.0
IBM Security QRadar<=7.5 - 7.5.0 UP7
Apache Log4j=1.2
Red Hat Fedora=35
Red Hat CodeReady Studio=12.0
Red Hat Integration - Camel K
Red Hat Quarkus
Red Hat JBoss A-MQ=6.0.0
Red Hat JBoss A-MQ=7
Red Hat JBoss A-MQ
Red Hat JBoss Data Grid=7.0.0
Red Hat JBoss Data Virtualization=6.0.0
JBoss Enterprise Application Platform=6.0.0
JBoss Enterprise Application Platform=7.0
Red Hat JBoss Fuse=6.0.0
Red Hat JBoss Fuse=7.0.0
Red Hat JBoss Fuse Service Works=6.0
Red Hat JBoss Operations Network=3.0
Red Hat JBoss Web=3.0
Red Hat OpenShift Application Runtimes
Red Hat OpenShift Container Platform=4.6
Red Hat OpenShift Container Platform=4.7
Red Hat OpenShift Container Platform=4.8
Red Hat Process Automation Manager=7.0
Red Hat Single Sign-On=7.0
Red Hat Software Collections
Red Hat Enterprise Linux=6.0
Red Hat Enterprise Linux=7.0
Red Hat Enterprise Linux=8.0
Oracle Advanced Supply Chain Planning=12.1
Oracle Advanced Supply Chain Planning=12.2
Oracle Business Intelligence Enterprise Edition=5.9.0.0.0
Oracle Business Intelligence Enterprise Edition=12.2.1.3.0
Oracle Business Intelligence Enterprise Edition=12.2.1.4.0
Oracle Business Process Management Suite=12.2.1.3.0
Oracle Business Process Management Suite=12.2.1.4.0
Oracle Communications Eagle FTP Table Base Retrieval=4.5
Sun iPlanet Messaging Server=8.1
Oracle Communications Network Integrity=7.3.6
Oracle Communications Offline Mediation Controller<12.0.0.4.0
Oracle Communications Offline Mediation Controller=12.0.0.5.0
Oracle Communications Unified Inventory Management=7.3.4
Oracle Communications Unified Inventory Management=7.3.5
Oracle Communications Unified Inventory Management=7.4.1
Oracle Communications Unified Inventory Management=7.4.2
Oracle E-Business Suite=2.2.1.1.1
Oracle Enterprise Manager=13.4.0.0
Oracle Enterprise Manager=13.5.0.0
Oracle Financial Services Revenue Management and Billing Analytics=2.7.0.0
Oracle Financial Services Revenue Management and Billing Analytics=2.7.0.1
Oracle Financial Services Revenue Management and Billing Analytics=2.8.0.0
Oracle Fusion Middleware=12.2.1.4.0
Oracle GoldenGate
Oracle Healthcare Data Repository=8.1.0
Oracle Hyperion Data Relationship Management<11.2.8.0
Oracle Hyperion Infrastructure Technology<11.2.8.0
Oracle Identity Management Suite=12.2.1.3.0
Oracle Identity Management Suite=12.2.1.4.0
Oracle JDeveloper=12.2.1.3.0
MySQL Enterprise Monitor<=8.0.29
Oracle Pytalloc=14.1.3.2
Oracle Pytalloc=15.0.3.1
Oracle Pytalloc=16.0.3
Oracle Pytalloc=19.0.1
Oracle Retail Extract Transform And Load=13.2.5
Oracle Stream Analytics
Oracle TimesTen In-Memory Database
Oracle Tuxedo=12.2.2.0.0
Oracle Utilities=6.0.0.1.1
Oracle Utilities=6.0.0.2.2
Oracle Utilities=6.0.0.3.1
Oracle WebLogic Server=12.2.1.3.0
Oracle WebLogic Server=12.2.1.4.0
Oracle WebLogic Server=14.1.1.0.0

Remedy

https://github.com/apache/logging-log4j2/pull/608#issuecomment-990494126

Remedy

https://www.kb.cert.org/vuls/id/930724

Remedy

https://www.oracle.com/security-alerts/cpuapr2022.html

Remedy

https://www.oracle.com/security-alerts/cpujan2022.html

Remedy

These are the possible mitigations for this flaw for releases version 1.x: - Comment out or remove JMSAppender in the Log4j configuration if it is used - Remove the JMSAppender class from the classpath. For example: ``` zip -q -d log4j-*.jar org/apache/log4j/net/JMSAppender.class ``` - Restrict access for the OS user on the platform running the application to prevent modifying the Log4j configuration by the attacker.

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2021-4104?

    The severity of CVE-2021-4104 is classified as low, but it still poses a risk due to potential remote code execution via JNDI lookups.

  • How do I fix CVE-2021-4104?

    To fix CVE-2021-4104, update your Log4j to versions 1.2.17-3.redhat_00008.1.ep6 or later, or to any version above 2.15.0.

  • Who is affected by CVE-2021-4104?

    CVE-2021-4104 affects applications using Apache Log4j version 1.2.0 to 1.2.17, particularly those with write access to the Log4j configuration.

  • What types of attacks can CVE-2021-4104 enable?

    CVE-2021-4104 can potentially enable remote code execution attacks by allowing an attacker to manipulate JMSAppender configuration.

  • Is there a workaround for CVE-2021-4104?

    A possible workaround for CVE-2021-4104 is to disable the JMSAppender or restrict modification rights on the Log4j configuration.

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