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.
History

Fri, 09 May 2025 02:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N'}

threat_severity

Moderate


Wed, 07 May 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 07 May 2025 09:30:00 +0000

Type Values Removed Values Added
References

Wed, 07 May 2025 09:15:00 +0000

Type Values Removed Values Added
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.
Title Apache ActiveMQ: Unchecked buffer length can cause excessive memory allocation
Weaknesses CWE-789
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/AU:Y/R:A/V:D/RE:M/U:Red'}


cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published: 2025-05-07T08:59:00.249Z

Updated: 2025-05-07T14:00:17.963Z

Reserved: 2025-02-28T12:57:16.780Z

Link: CVE-2025-27533

cve-icon Vulnrichment

Updated: 2025-05-07T09:04:12.173Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-05-07T09:15:18.820

Modified: 2025-05-07T14:13:20.483

Link: CVE-2025-27533

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-05-07T08:59:00Z

Links: CVE-2025-27533 - Bugzilla