# CVE-2020-13920: activemq: Apache ActiveMQ uses LocateRegistry.createRegistry() to create the JMX RMI registry and binds the server to the "jmxr...

CVE-2020-13920 is fixed in 2 products on 1 platform, first by activemq 5.15.8-2~18.04.1~esm1, released November 28, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-13920
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0454
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 10, 2020

## Description

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. Upgrade to Apache ActiveMQ 5.15.12.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | activemq Ubuntu 18.04.6 LTS (bionic) | 5.15.8-2~18.04.1~esm1 | [activemq 5.15.8-2~18.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-activemq-5.15.8-2-18.04.1-esm1.md) | Nov 28, 2023 |
| Linux | activemq Ubuntu 20.04 LTS (focal) | 5.15.11-1ubuntu0.1~esm1 | [activemq 5.15.11-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-activemq-5.15.11-1ubuntu0.1-esm1.md) | Nov 28, 2023 |
| Linux | libactivemq-java Ubuntu 18.04.6 LTS (bionic) | 5.15.8-2~18.04.1~esm1 | [libactivemq-java 5.15.8-2~18.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libactivemq-java-5.15.8-2-18.04.1-esm1.md) | Nov 28, 2023 |
| Linux | libactivemq-java Ubuntu 20.04 LTS (focal) | 5.15.11-1ubuntu0.1~esm1 | [libactivemq-java 5.15.11-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libactivemq-java-5.15.11-1ubuntu0.1-esm1.md) | Nov 28, 2023 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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