Description
Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ.
During unmarshalling of OpenWire commands the size value of buffers was not properly validated which could lead to excessive memory allocation and be exploited to cause a denial of service (DoS) by depleting process memory, thereby affecting applications and services that rely on the availability of the ActiveMQ broker when not using mutual TLS connections. This issue affects Apache ActiveMQ: from 6.0.0 before 6.1.6, from 5.18.0 before 5.18.7, from 5.17.0 before 5.17.7, before 5.16.8. ActiveMQ 5.19.0 is not affected.
Users are recommended to upgrade to version 6.1.6+, 5.19.0+, 5.18.7+, 5.17.7, or 5.16.8 or which fixes the issue.
Existing users may implement mutual TLS to mitigate the risk on affected brokers.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache ActiveMQ | >= 6.0.0, < 6.1.6; >= 5.18.0, < 5.18.7; >= 5.17.0, < 5.17.7; >= 5.16.0, < 5.16.8 |
References
- https://lists.apache.org/thread/8hcm25vf7mchg4zbbhnlx2lc5bs705hgMailing List, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2025/05/06/1Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/06/msg00020.html
Timeline
- Published
- May 7, 2025
- Last modified
- Jun 17, 2026
- NVD status
- Modified