When Tomcat is configured with the JMX Remote Lifecycle Listener, a local attacker without access to the Tomcat process or configuration files is able to manipulate the RMI registry to perform a man-in-the-middle attack to capture user names and passwords used to access the JMX interface. The attacker can then use these credentials to access the JMX interface and gain complete control over the Tomcat instance. Reference: https://tomcat.apache.org/security-7.html https://tomcat.apache.org/security-8.html http://tomcat.apache.org/security-9.html Upstream commits: https://github.com/apache/tomcat/commit/bef3f40 https://github.com/apache/tomcat/commit/a91d7db https://github.com/apache/tomcat/commit/1fc9f58
Created tomcat tracking bugs for this issue: Affects: epel-all [bug 1785700] Affects: fedora-all [bug 1785701]
This vulnerability is out of security support scope for the following products: * Red Hat JBoss BPM Suite 6 * Red Hat JBoss BRMS 6 Please refer to https://access.redhat.com/support/policy/updates/jboss_notes for more details.
Statement: This flaw did not affect the versions of tomcat as shipped with Red Hat Enterprise Linux 5, as they did not include JMX Remote Lifecycle Listener, which was introduced in a later version of the package.
External References: http://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.29 http://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.49 https://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.99 http://mail-archives.apache.org/mod_mbox/tomcat-users/201912.mbox/%3C3f42d82c-d9e9-8893-9820-df4e420e5c4e@apache.org%3E
Mitigation: Disable JMX Remote if monitoring is only needed locally and there is no need to monitor Tomcat remotely. If JMX Remote is required and cannot be disabled, then use the built-in remote JMX facilities provided by the JVM. Please note that JMX Remote Lifecycle Listener is now deprecated and may be removed from both Tomcat 7 [1] and Tomcat 9 [2] after 2020-12-31. [1] https://tomcat.apache.org/tomcat-7.0-doc/config/listeners.html#Deprecated_Implementations [2] https://tomcat.apache.org/tomcat-9.0-doc/config/listeners.html#Deprecated_Implementations
This issue has been addressed in the following products: Red Hat JBoss Web Server Via RHSA-2020:0860 https://access.redhat.com/errata/RHSA-2020:0860
This issue has been addressed in the following products: Red Hat JBoss Web Server 3 for RHEL 7 Red Hat JBoss Web Server 3 for RHEL 6 Via RHSA-2020:0861 https://access.redhat.com/errata/RHSA-2020:0861
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2019-12418
This issue has been addressed in the following products: Red Hat JBoss Web Server Via RHSA-2020:1521 https://access.redhat.com/errata/RHSA-2020:1521
This issue has been addressed in the following products: Red Hat JBoss Web Server 5.3 on RHEL 7 Red Hat JBoss Web Server 5.3 on RHEL 6 Red Hat JBoss Web Server 5.3 on RHEL 8 Via RHSA-2020:1520 https://access.redhat.com/errata/RHSA-2020:1520