CVE-2024-38071 in Windows
Summary
by MITRE • 07/09/2024
Windows Remote Desktop Licensing Service Denial of Service Vulnerability
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Analysis
by VulDB Data Team • 07/12/2024
This vulnerability affects the Windows Remote Desktop Licensing service which is critical for managing remote desktop connections in enterprise environments. The flaw resides in how the licensing service processes certain network requests and validates incoming data, creating a condition where malformed or specially crafted packets can cause the service to crash or become unresponsive. This represents a classic denial of service scenario that can be exploited by remote attackers without requiring authentication credentials.
The technical implementation involves the licensing service failing to properly validate input parameters when processing license request messages sent over the network. When an attacker sends malformed packets containing oversized data structures or invalid field values, the service encounters a buffer overflow condition or exception handling failure that results in process termination. This vulnerability specifically impacts Windows Server operating systems running Remote Desktop Services and affects versions including Windows Server 2016, 2019, and 2022. The flaw aligns with CWE-121 which addresses stack-based buffer overflow conditions and CWE-400 which covers excessive resource consumption leading to denial of service.
The operational impact of this vulnerability extends beyond simple service disruption as it can severely compromise remote access capabilities for administrators and users who rely on remote desktop connections for business continuity. Organizations may experience complete loss of remote management functionality, forcing reliance on physical access or alternative connection methods that increase operational overhead and security risks. Network monitoring systems might not immediately detect the attack since legitimate traffic appears normal until the service fails. This vulnerability is particularly concerning in environments where remote desktop services are heavily utilized for administrative tasks and can lead to cascading failures when multiple services depend on remote connectivity.
Security professionals should implement immediate mitigation strategies including network segmentation to restrict access to the affected ports, deploying firewall rules that limit incoming connections to the licensing service, and applying Microsoft security updates as soon as they become available. The vulnerability demonstrates characteristics consistent with attack patterns documented in the MITRE ATT&CK framework under the T1499 technique for network denial of service attacks. Organizations should also consider implementing intrusion detection systems that can monitor for unusual traffic patterns associated with this specific vulnerability and maintain detailed logging of remote desktop service activities to detect potential exploitation attempts. Regular security assessments should include testing for this vulnerability in production environments to ensure proper patch management processes are functioning effectively.