CVE-2024-43500 in Windows
Summary
by MITRE • 10/08/2024
Windows Resilient File System (ReFS) Information Disclosure Vulnerability
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Analysis
by VulDB Data Team • 10/18/2024
The Windows Resilient File System (ReFS) information disclosure vulnerability represents a critical security flaw that affects the storage subsystem of Microsoft Windows operating systems. This vulnerability resides within the ReFS file system implementation and allows for unauthorized information disclosure through specific manipulation of file system structures. The issue specifically impacts systems running Windows 10 and Windows 11 versions where ReFS is utilized, particularly in scenarios involving file system metadata handling and memory management operations.
The technical flaw manifests when ReFS processes certain file operations that involve metadata structures and memory allocation patterns. The vulnerability occurs due to improper validation of file system structures during read operations, allowing attackers to potentially access sensitive information from memory locations that should remain protected. This weakness enables an attacker to extract data that was not intended for disclosure through standard file system access controls. The flaw is particularly concerning because it operates at the file system level, bypassing traditional application-level security measures and potentially exposing system internals.
From an operational perspective, this vulnerability creates significant risks for organizations relying on ReFS for data storage and management. Attackers could exploit this weakness to gain insights into file system structures, potentially leading to further exploitation opportunities or information gathering for advanced attacks. The impact extends beyond simple data exposure, as the vulnerability may enable attackers to understand system configurations, file access patterns, and potentially identify other weaknesses within the storage subsystem. This information disclosure could facilitate more sophisticated attacks targeting the underlying operating system or applications that depend on ReFS for storage operations.
The vulnerability aligns with CWE-200, which addresses information exposure, and relates to ATT&CK technique T1005, which covers data from local system. Organizations should implement immediate mitigations including applying Microsoft security updates, monitoring for suspicious file system access patterns, and implementing network segmentation to limit potential attack vectors. Additionally, system administrators should review ReFS configuration settings and consider disabling unnecessary ReFS functionality until comprehensive patches are deployed. The threat landscape surrounding this vulnerability highlights the importance of maintaining current security patches and implementing robust monitoring procedures for file system activities that could indicate exploitation attempts.