critical
9.8
CWE
502
Advisory Published
CVE Published
Advisory Published
Updated

CVE-2019-17571

First published: Fri Dec 20 2019(Updated: )

A flaw was discovered in Log4j, where a vulnerable SocketServer class may lead to the deserialization of untrusted data. This flaw allows an attacker to remotely execute arbitrary code when combined with a deserialization gadget.

Credit: security@apache.org security@apache.org

Affected SoftwareAffected VersionHow to fix
maven/org.zenframework.z8.dependencies.commons:log4j-1.2.17=2.0
maven/log4j:log4j>=1.2<=1.2.17
debian/apache-log4j1.2<=1.2.17-5<=1.2.17-7<=1.2.17-8
1.2.17-9
1.2.17-8+deb10u1
1.2.17-7+deb9u1
redhat/log4j<0:1.2.14-6.7.el6_10
0:1.2.14-6.7.el6_10
redhat/log4j<0:1.2.17-16.el7_4
0:1.2.17-16.el7_4
redhat/log4j<0:1.2.14-19.patch_01.ep5.el5
0:1.2.14-19.patch_01.ep5.el5
redhat/log4j<0:1.2.14-19.patch_01.ep5.el6
0:1.2.14-19.patch_01.ep5.el6
redhat/jboss-ec2-eap<0:7.5.17-1.Final_redhat_4.ep6.el6
0:7.5.17-1.Final_redhat_4.ep6.el6
redhat/eap7-jboss-ec2-eap<0:7.0.8-1.GA_redhat_1.ep7.el6
0:7.0.8-1.GA_redhat_1.ep7.el6
redhat/eap7-jboss-ec2-eap<0:7.0.8-1.GA_redhat_1.ep7.el7
0:7.0.8-1.GA_redhat_1.ep7.el7
redhat/log4j-eap6<0:1.2.16-12.redhat_3.1.ep6.el6
0:1.2.16-12.redhat_3.1.ep6.el6
redhat/tomcat7<0:7.0.70-22.ep7.el6
0:7.0.70-22.ep7.el6
redhat/tomcat8<0:8.0.36-24.ep7.el6
0:8.0.36-24.ep7.el6
redhat/tomcat-native<0:1.2.8-10.redhat_10.ep7.el6
0:1.2.8-10.redhat_10.ep7.el6
redhat/log4j-eap6<0:1.2.16-12.redhat_3.1.ep6.el7
0:1.2.16-12.redhat_3.1.ep6.el7
redhat/tomcat7<0:7.0.70-22.ep7.el7
0:7.0.70-22.ep7.el7
redhat/tomcat8<0:8.0.36-24.ep7.el7
0:8.0.36-24.ep7.el7
redhat/tomcat-native<0:1.2.8-10.redhat_10.ep7.el7
0:1.2.8-10.redhat_10.ep7.el7
redhat/log4j<2.8.2
2.8.2
Apache Log4j<=1.2.17
Debian Debian Linux=8.0
Debian Debian Linux=9.0
Debian Debian Linux=10.0
Canonical Ubuntu Linux=18.04
openSUSE Leap=15.1
NetApp OnCommand System Manager>=3.0<=3.1.3
NetApp OnCommand Workflow Automation
Oracle Application Testing Suite=13.3.0.1
Oracle Communications Network Integrity>=7.3.2<=7.3.6
Oracle Endeca Information Discovery Studio=3.2.0
Oracle Financial Services Lending And Leasing>=14.1.0<=14.8.0
Oracle Financial Services Lending And Leasing=12.5.0
Oracle Mysql Enterprise Monitor<=8.0.29
Oracle Primavera Gateway>=16.2<=16.2.11
Oracle Primavera Gateway>=17.12.0<=17.12.7
Oracle Rapid Planning=12.1
Oracle Rapid Planning=12.2
Oracle Retail Extract Transform And Load=19.0
Oracle Retail Service Backbone=14.1
Oracle Retail Service Backbone=15.0
Oracle Retail Service Backbone=16.0
Oracle WebLogic Server=10.3.6.0.0
Oracle WebLogic Server=12.1.3.0.0
Oracle WebLogic Server=12.2.1.3.0
Oracle WebLogic Server=12.2.1.4.0
Oracle WebLogic Server=14.1.1.0.0
Apache Bookkeeper<4.14.3
debian/apache-log4j1.2
1.2.17-10+deb11u1
1.2.17-11
IBM QRadar SIEM<=7.5 - 7.5.0 UP7

Remedy

https://www.oracle.com/security-alerts/cpuApr2021.html

Remedy

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

Remedy

https://www.oracle.com/security-alerts/cpujul2022.html

Remedy

https://lists.apache.org/thread.html/r48d5019bd42e0770f7e5351e420a63a41ff1f16924942442c6aff6a8@%3Ccommits.zookeeper.apache.org%3E

Remedy

https://lists.apache.org/thread.html/r48efc7cb5aeb4e1f67aaa06fb4b5479a5635d12f07d0b93fc2d08809@%3Ccommits.zookeeper.apache.org%3E

Remedy

https://lists.apache.org/thread.html/r8e3f7da12bf5750b0a02e69a78a61073a2ac950eed7451ce70a65177@%3Ccommits.zookeeper.apache.org%3E

Remedy

https://lists.apache.org/thread.html/rb3c94619728c8f8c176d8e175e0a1086ca737ecdfcd5a2214bb768bc@%3Ccommits.bookkeeper.apache.org%3E

Remedy

https://lists.apache.org/thread.html/rbc45eb0f53fd6242af3e666c2189464f848a851d408289840cecc6e3@%3Ccommits.zookeeper.apache.org%3E

Remedy

https://lists.apache.org/thread.html/rdf2a0d94c3b5b523aeff7741ae71347415276062811b687f30ea6573@%3Ccommits.zookeeper.apache.org%3E

Remedy

https://lists.apache.org/thread.html/reaf6b996f74f12b4557bc221abe88f58270ac583942fa41293c61f94@%3Cpluto-scm.portals.apache.org%3E

Remedy

https://lists.apache.org/thread.html/rec34b1cccf907898e7cb36051ffac3ccf1ea89d0b261a2a3b3fb267f@%3Ccommits.zookeeper.apache.org%3E

Remedy

Please note that the Log4j upstream strongly recommends against using the SerializedLayout with the SocketAppenders. Customers may mitigate this issue by removing the SocketServer class outright; or if they must continue to use SocketAppenders, they can modify their SocketAppender configuration from SerializedLayout to use JsonLayout instead. An example of this in log4j-server.properties might look like this: log4j.appender.file.layout=org.apache.log4j.JsonLayout

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2019-17571?

    CVE-2019-17571 is a vulnerability in Log4j where a vulnerable SocketServer class may lead to the deserialization of untrusted data, allowing remote code execution.

  • What is the severity of CVE-2019-17571?

    CVE-2019-17571 has a severity value of 9, which is considered critical.

  • How does CVE-2019-17571 affect Log4j?

    CVE-2019-17571 affects Log4j versions up to 1.2, allowing for remote code execution.

  • What is the recommended remedy for CVE-2019-17571?

    The recommended remedy for CVE-2019-17571 is to update Log4j to version 1.2.14-6.7.el6_10 or higher.

  • Where can I find more information about CVE-2019-17571?

    You can find more information about CVE-2019-17571 at the following sources: [CVE](https://www.cve.org/CVERecord?id=CVE-2019-17571), [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-17571), [Red Hat Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=1785616), [Red Hat Advisory](https://access.redhat.com/errata/RHSA-2022:5053).

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