CVE-2024-38077 Scanner

The Windows Remote Desktop Licensing Service (RDL) is widely used by organizations running Remote Desktop Services to manage and validate licenses for remote desktop connections. It is commonly employed by system administrators to extend the capabilities of their infrastructure, allowing additional Remote Desktop sessions. RDL is critical in virtual desktop infrastructure (VDI) environments and bastion hosts where secure remote access is necessary. The service ensures that only authorized users can connect to remote systems. However, enabling RDL without up-to-date security patches can expose systems to remote threats.

This scanner identifies a critical remote code execution vulnerability (CVE-2024-38077) within the Windows Server Remote Desktop Licensing Service. If successfully exploited, an attacker can execute arbitrary code on the server, potentially gaining control over the entire system. The vulnerability stems from improper handling of specially crafted requests sent to the RDL service. Microsoft has released a patch, but unpatched systems remain vulnerable to remote attacks.

The Windows Remote Desktop Licensing Service contains a flaw in the way it processes certain network requests. This vulnerability is exploited by sending a specially crafted request to the RDL service, which fails to properly validate the input, leading to arbitrary code execution. The vulnerable endpoint is typically exposed on servers running Remote Desktop Services, and the attack requires no prior authentication. This makes it especially dangerous in environments where RDL is enabled without adequate patching. The issue affects both internal and external deployments where RDL is used to manage licensing for remote connections.

Successful exploitation of the CVE-2024-38077 vulnerability can result in complete remote takeover of the affected server. Attackers can execute arbitrary code, escalate privileges, and gain administrative control. This could lead to data breaches, unauthorized access to sensitive systems, and disruption of services, as well as the ability to pivot to other systems within the network. Given the high severity and the fact that the attack is remote, systems left unpatched are at significant risk of compromise.

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References:

• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2024-38077