CVE-2016-0133 in Windows
Summary
by MITRE
The USB Mass Storage Class driver in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 allows physically proximate attackers to execute arbitrary code by inserting a crafted USB device, aka "USB Mass Storage Elevation of Privilege Vulnerability."
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Analysis
by VulDB Data Team • 11/03/2024
The vulnerability identified as CVE-2016-0133 represents a critical elevation of privilege flaw within Microsoft Windows operating systems that affects a broad range of versions including Vista SP2 through Windows 10 1511. This vulnerability specifically targets the USB Mass Storage Class driver component that handles USB device connections and data transfer operations. The flaw enables attackers to execute arbitrary code with elevated privileges by simply inserting a specially crafted USB device into a vulnerable system, making it particularly dangerous due to its low attack vector requirements and high impact potential. The vulnerability operates under the principle of physical proximity attacks, where an attacker needs only to be near the target system to potentially compromise it, eliminating the need for network-based exploitation methods.
The technical root cause of this vulnerability stems from improper validation of USB device descriptors and mass storage class commands within the Windows kernel. When a USB mass storage device is connected, the system's USB Mass Storage Class driver processes device identification and communication protocols without adequate input sanitization. This allows a maliciously crafted USB device to send specially constructed commands that trigger buffer overflows or other memory corruption conditions within the driver's memory management routines. The vulnerability is classified under CWE-121 as a stack-based buffer overflow, where the driver fails to properly validate the length of incoming data from USB devices before copying it into fixed-size buffers. This type of flaw enables attackers to overwrite adjacent memory locations and potentially redirect code execution flow to malicious payloads.
The operational impact of CVE-2016-0133 is severe and multifaceted, as it allows attackers to gain system-level privileges without requiring user interaction or authentication. Once executed, the malicious code can perform any action available to the system, including installing malware, modifying system files, accessing sensitive data, and establishing persistence mechanisms. The vulnerability is particularly concerning in enterprise environments where physical security controls may be insufficient, as it can be exploited through simple USB device insertion attacks that bypass traditional network-based security measures. The attack can be executed silently in the background without any visible user prompts, making detection and prevention particularly challenging for security administrators. This vulnerability directly maps to several ATT&CK techniques including T1059 for command and scripting interpreter, T1068 for exploit for privilege escalation, and T1021.002 for proxy execution through USB devices.
Mitigation strategies for this vulnerability require multiple layers of defense to protect against exploitation attempts. Microsoft addressed this vulnerability through security updates that implemented proper input validation and memory boundary checking within the USB Mass Storage Class driver. Organizations should immediately deploy the relevant security patches and updates from Microsoft's security bulletin MS16-001. Additionally, system administrators should implement USB device policy controls that restrict or disable mass storage device access, particularly in high-security environments. The implementation of device whitelisting policies and USB event monitoring can provide additional detection capabilities for suspicious USB device connections. Network-based intrusion detection systems should be configured to monitor for unusual USB device enumeration patterns and potential exploitation attempts. Physical security controls including restricted USB port access and device access logging should complement technical mitigations. The vulnerability also highlights the importance of keeping systems up-to-date with security patches and implementing comprehensive endpoint protection solutions that can detect and block malicious USB device behavior.