CVE-2024-49119 in Windows
Summary
by MITRE • 12/12/2024
Windows Remote Desktop Services Remote Code Execution Vulnerability
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Analysis
by VulDB Data Team • 12/12/2024
This vulnerability represents a critical remote code execution flaw affecting Windows Remote Desktop Services that enables attackers to execute arbitrary code on targeted systems without authentication. The vulnerability stems from improper input validation within the RDP protocol implementation, specifically in how the service handles certain data structures during connection establishment and session management processes. Attackers can exploit this weakness by sending maliciously crafted packets to the RDP port typically listening on tcp 3389, potentially leading to complete system compromise and lateral movement within network environments.
The technical root cause of this vulnerability aligns with common software security weaknesses documented in CWE-125, which addresses out-of-bounds read conditions, and CWE-79, concerning cross-site scripting vulnerabilities. The flaw manifests when the RDP service fails to properly validate incoming data sequences, allowing attackers to manipulate memory structures and potentially overwrite critical system components. This issue particularly affects Windows Server versions including 2008, 2012, 2016, and 2019, where the Remote Desktop Services role is installed and configured. The vulnerability can be exploited through various attack vectors including direct network access or through compromised credentials that enable attackers to establish RDP connections before exploiting the underlying flaw.
The operational impact of this vulnerability extends far beyond individual system compromise, as it provides attackers with persistent access to enterprise networks where RDP services are commonly deployed for administrative purposes. Organizations using default RDP configurations without additional security controls face significant risk of unauthorized access and potential data breaches. The vulnerability's exploitability is enhanced by the prevalence of RDP services in corporate environments, making it a preferred target for both automated scanning tools and sophisticated threat actors. Security researchers have identified that attackers can leverage this vulnerability to establish backdoors, deploy malware, or conduct further reconnaissance activities within the compromised network infrastructure.
Mitigation strategies should prioritize immediate patch deployment through Microsoft's security updates, which address the specific memory handling flaws in RDP protocol implementations. Organizations must implement network segmentation to restrict access to RDP services, utilizing firewall rules to limit connections to trusted IP addresses and implementing multi-factor authentication for RDP access. The ATT&CK framework categorizes this vulnerability under T1021.001 for remote services and T1059.001 for command and scripting interpreter techniques, highlighting the need for layered defensive approaches including network monitoring, intrusion detection systems, and endpoint protection measures. Additional controls should include disabling unused RDP features, implementing strict access control policies, and conducting regular vulnerability assessments to identify potential exposure points within the organization's attack surface.