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                            CERT-Renater

                Note d'Information No. 2025/VULN704
_____________________________________________________________________

DATE                : 16/10/2025

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running Apache ActiveMQ NMS AMQP
                               versions prior to 2.4.0.

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https://lists.apache.org/thread/9k684j07ljrshy3hxwhj5m0xjmkz1g2n
_____________________________________________________________________

CVE-2025-54539: Apache ActiveMQ NMS AMQP Client: Deserialization of
Untrusted Data

Severity: important 

Affected versions:

- Apache ActiveMQ NMS AMQP Client through 2.3.0


Description:

A Deserialization of Untrusted Data vulnerability exists in the
Apache ActiveMQ NMS AMQP Client.

This issue affects all versions of Apache ActiveMQ NMS AMQP up to
and including 2.3.0, when establishing connections to untrusted
AMQP servers. Malicious servers could exploit unbounded
deserialization logic present in the client to craft responses
that may lead to arbitrary code execution on the client side.

Although version 2.1.0 introduced a mechanism to restrict
deserialization via allow/deny lists, the protection was found to
be bypassable under certain conditions.

In line with Microsoft’s deprecation of binary serialization in
.NET 9, the project is evaluating the removal of .NET binary
serialization support from the NMS API entirely in future
releases.

Mitigation and Recommendations:
Users are strongly encouraged to upgrade to version 2.4.0 or
later, which resolves the issue. Additionally, projects depending
on NMS-AMQP should migrate away from .NET binary serialization
as part of a long-term hardening strategy.


Credit:

Security Research Team @ Endor Labs (finder)


References:

https://activemq.apache.org/
https://www.cve.org/CVERecord?id=CVE-2025-54539


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