How to find Microsoft Message Queuing (MSMQ) servers on your network

Rob King

Updated June 13, 2024, 3:30pm EDT

Microsoft has disclosed a pre-auth use-after-free vulnerability in the Microsoft Message Queuing (MSMQ) service running on Windows. MSMQ is a message queuing mechanism that allows different systems and processes to communicate reliably.

CVE-2024-30080 is rated critical, with a CVSS score of 9.8, and allows attackers to execute arbitrary code with the privileges of the server process. This issue was reported by k0shl with Kunlun Lab.

What is the impact? #

Successful exploitation of this vulnerability would allow an attacker to execute arbitrary code on the server.

Are updates or workarounds available? #

Microsoft has released an update addressing this vulnerability. Users are encouraged to apply this patch immediately.

How do I find potentially vulnerable systems with runZero? #

From the Asset Inventory, use the following query to locate systems running potentially vulnerable software:

os:Windows AND tcp_port:1801

Written by Rob King

Rob King is the Director of Security Research at runZero. Over his career Rob has served as a senior researcher with KoreLogic, the architect for TippingPoint DVLabs, and helped get several startups off the ground. Rob helped design SC Magazine's Data Leakage Prevention Product of the Year for 2010, and was awarded the 3Com Innovator of the Year Award in 2009. He has been invited to speak at BlackHat, Shmoocon, SANS Network Security, and USENIX.

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