CVE-2017-0184 in Hyper-V
Summary
by MITRE
A denial of service vulnerability exists when Microsoft Hyper-V running on a host server fails to properly validate input from a privileged user on a guest operating system, aka "Hyper-V Denial of Service Vulnerability." This CVE ID is unique from CVE-2017-0178, CVE-2017-0179, CVE-2017-0182, CVE-2017-0183, CVE-2017-0185, and CVE-2017-0186.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 12/23/2024
The vulnerability identified as CVE-2017-0184 represents a critical denial of service flaw within Microsoft Hyper-V virtualization platform that specifically affects systems running on host servers. This vulnerability stems from insufficient input validation mechanisms within the Hyper-V hypervisor when processing data from guest operating systems, creating a potential vector for malicious exploitation that could disrupt normal system operations. The flaw is particularly concerning because it allows a privileged user within a guest virtual machine to manipulate the host system's behavior through crafted input sequences, effectively undermining the isolation guarantees that virtualization environments are designed to provide.
The technical implementation of this vulnerability resides in the Hyper-V host server's validation processes that fail to adequately sanitize or verify input parameters received from guest operating systems. When a privileged user executes malicious code within their guest VM, the vulnerability can be exploited to cause the host system to become unresponsive or crash entirely, resulting in a denial of service condition that affects all virtual machines hosted on that system. This type of flaw falls under the CWE-20 category of "Improper Input Validation" and represents a classic example of how insufficient validation in virtualization layers can lead to privilege escalation and system instability. The vulnerability specifically impacts the hypervisor's handling of certain input sequences that should be properly filtered before being processed by the host system's core components.
The operational impact of CVE-2017-0184 extends beyond simple service disruption as it can potentially allow attackers with access to a guest VM to compromise the entire host infrastructure. This creates a significant risk for organizations that rely heavily on virtualization technologies, particularly in cloud computing environments where multiple tenants share the same physical hardware. The vulnerability can be exploited by malicious actors who have already gained access to a guest operating system, making it particularly dangerous in scenarios where security boundaries have been breached. According to ATT&CK framework, this vulnerability aligns with techniques involving privilege escalation and denial of service, where adversaries leverage existing access to expand their control over the target environment.
Mitigation strategies for this vulnerability primarily focus on applying Microsoft's security updates and patches that address the specific input validation flaws within Hyper-V components. Organizations should prioritize immediate deployment of the relevant security patches provided by Microsoft, as the vulnerability can be exploited remotely by authenticated users with access to guest VMs. Additionally, implementing network segmentation and access controls can help limit the potential impact of exploitation by reducing the attack surface available to malicious actors. System administrators should also consider implementing monitoring solutions that can detect unusual patterns of resource consumption or system behavior that might indicate exploitation attempts. The vulnerability demonstrates the critical importance of maintaining up-to-date virtualization platforms and underscores the need for comprehensive security testing of hypervisor components to prevent similar issues from emerging in production environments.