CVE-2023-21554

CVE-2023-21554, also known as QueueJumper, is a critical vulnerability that affects Microsoft Message Queuing (MSMQ). This flaw in software design or implementation could allow unauthenticated attackers to remotely execute arbitrary code within the context of the Windows service process mqsvc.exe. As a Remote Code Execution (RCE) vulnerability, it poses a significant risk, given its potential to provide unauthorized access and control over affected systems. This vulnerability was identified and dubbed QueueJumper by Check Point Research (CPR). The severity of this vulnerability lies in its capacity to enable remote attackers to manipulate system processes without requiring authentication, thereby potentially compromising the integrity, confidentiality, and availability of the targeted system. The details about this vulnerability are available on the Microsoft Security Response Center's website. In response to this threat, Check Point Intrusion Prevention System (IPS) has developed and deployed a signature named "Microsoft Message Queuing Remote Code Execution (CVE-2023-21554)." This measure aims to detect and protect Check Point customers against the QueueJumper vulnerability. Consequently, users of Check Point IPS can be assured of protection against this specific threat, reinforcing their security posture against potential cyber attacks.