Debian Security Advisory

DLA-3657-1 activemq -- LTS security update

Date Reported:
20 Nov 2023
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 1054909, Bug 982590.
In Mitre's CVE dictionary: CVE-2020-13920, CVE-2021-26117, CVE-2023-46604.
More information:

Several security vulnerabilities have been discovered in ActiveMQ, a Java message broker.

  • CVE-2020-13920

    Apache ActiveMQ uses LocateRegistry.createRegistry() to create the JMX RMI registry and binds the server to the jmxrmi entry. It is possible to connect to the registry without authentication and call the rebind method to rebind jmxrmi to something else. If an attacker creates another server to proxy the original, and bound that, he effectively becomes a man in the middle and is able to intercept the credentials when an user connects.

  • CVE-2021-26117

    The optional ActiveMQ LDAP login module can be configured to use anonymous access to the LDAP server.

  • CVE-2023-46604

    The Java OpenWire protocol marshaller is vulnerable to Remote Code Execution. This vulnerability may allow a remote attacker with network access to either a Java-based OpenWire broker or client to run arbitrary shell commands by manipulating serialized class types in the OpenWire protocol to cause either the client or the broker (respectively) to instantiate any class on the classpath.

For Debian 10 buster, these problems have been fixed in version 5.15.16-0+deb10u1.

We recommend that you upgrade your activemq packages.

For the detailed security status of activemq please refer to its security tracker page at:

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: