CVE-2024-49117 in Windows
Summary
by MITRE • 12/12/2024
Windows Hyper-V 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 within Microsoft Windows Hyper-V virtualization platform that allows attackers to execute arbitrary code on affected systems without authentication. The vulnerability stems from improper validation of input parameters within the Hyper-V hypervisor component, specifically in how it processes certain network packets and memory operations during virtual machine management tasks. According to CWE-125, this corresponds to an out-of-bounds read condition that can be exploited through carefully crafted malicious payloads delivered over network protocols. The flaw exists in the Hyper-V Virtual Machine Management Service which handles inter-VM communications and system resource allocation, making it a prime target for exploitation in cloud environments where multiple virtual machines share underlying hardware resources.
The technical implementation of this vulnerability involves attackers leveraging specially crafted packets that trigger memory corruption within the hypervisor's network stack processing routines. When legitimate management operations are performed through Hyper-V's remote administration interfaces, malformed input data can cause the system to access invalid memory locations or execute unintended code paths. This creates a privilege escalation vector where unauthenticated attackers can potentially gain SYSTEM level privileges on the host system. The vulnerability is particularly dangerous because it operates at the hypervisor layer, meaning successful exploitation affects all virtual machines running on the compromised host. The flaw manifests through various attack vectors including but not limited to remote network-based attacks via SMB protocol, HTTP interfaces used for Hyper-V management, and direct network communication between virtual machines.
The operational impact of this vulnerability extends beyond individual system compromise to affect entire virtualized infrastructures, particularly in enterprise environments relying heavily on Hyper-V for data center operations. Security professionals have identified that the attack surface is significantly expanded when considering the potential for lateral movement within virtualized networks, as compromised hosts can serve as launching points for attacks against other VMs and underlying infrastructure components. The vulnerability's exploitation can result in complete system compromise, data exfiltration, and persistent backdoor installation. Organizations using Hyper-V in cloud computing environments face additional risks as attackers may exploit this to gain control over multiple tenant virtual machines within the same physical host, violating isolation principles fundamental to cloud security models. According to ATT&CK framework tactic T1059, successful exploitation enables adversaries to execute malicious code through legitimate system interfaces.
Mitigation strategies for this vulnerability require immediate patch deployment from Microsoft as part of the regular security update cycle, with particular attention to Hyper-V management services and network interface configurations. Organizations should implement network segmentation controls to limit direct access to Hyper-V management interfaces and establish strict firewall rules that restrict communication between virtual machines and external networks. The principle of least privilege must be enforced by limiting administrative access to Hyper-V management tools and ensuring that only authorized personnel can perform VM configuration changes. Network monitoring solutions should be configured to detect anomalous traffic patterns consistent with exploitation attempts, including unusual packet sizes, malformed network communications, and unexpected system resource utilization spikes. Additionally, virtual machine isolation should be reinforced through proper configuration of Hyper-V security features such as Secure Boot, Virtual Trusted Platform Module, and enhanced protection against memory-based attacks. Organizations should also consider implementing micro-segmentation strategies that further isolate critical virtual environments from general network traffic, reducing the attack surface for potential exploitation attempts.