CVE-2018-10071 in DriverWizard WinDriver
Summary
by MITRE
windrvr1260.sys in Jungo DriverWizard WinDriver 12.6.0 allows attackers to cause a denial of service (BSOD) via a 0x953826DB DeviceIoControl call.
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Analysis
by VulDB Data Team • 01/24/2020
The vulnerability identified as CVE-2018-10071 resides within the windrvr1260.sys kernel driver component of Jungo DriverWizard WinDriver version 12.6.0. This device driver serves as a critical interface between user-mode applications and hardware devices, facilitating direct hardware access through Windows Device I/O control mechanisms. The flaw manifests when the driver processes a specific DeviceIoControl call with the control code 0x953826DB, which represents an improperly validated input parameter that can trigger unexpected behavior within the kernel space execution environment.
The technical implementation of this vulnerability demonstrates a classic buffer over-read or improper input validation issue within the kernel-mode driver code. When an attacker crafts a malicious DeviceIoControl request with the specified control code, the driver fails to properly validate the input parameters before processing them, leading to a situation where the kernel execution context becomes unstable. This type of vulnerability falls under the Common Weakness Enumeration category CWE-125, which describes out-of-bounds read conditions that can result in system crashes or potential privilege escalation. The driver's failure to implement proper bounds checking on the input data structure allows the kernel to access memory locations beyond the intended buffer boundaries, ultimately causing the system to encounter an unrecoverable exception.
The operational impact of this vulnerability extends beyond simple denial of service, as it can result in system instability and complete system crashes manifesting as blue screen of death (BSOD) errors. This type of kernel-level vulnerability is particularly dangerous because it operates at the highest privilege level within the Windows operating system, meaning that successful exploitation can lead to system compromise or complete system shutdown. The attack vector requires minimal privileges since the vulnerability exists within a device driver that is typically accessible to standard users or applications that have been granted access to the device through legitimate means. The vulnerability also represents a potential entry point for more sophisticated attacks as it demonstrates the presence of other potential flaws within the driver's codebase that may not have been properly validated.
From an adversarial perspective, this vulnerability aligns with ATT&CK technique T1068, which involves the exploitation of local system privileges to gain elevated access. Attackers can leverage this vulnerability to perform persistent denial of service attacks against target systems, potentially disrupting critical operations in industrial control systems or embedded environments where WinDriver is commonly deployed. The vulnerability's impact is particularly concerning in environments where system uptime is critical, such as manufacturing facilities or network infrastructure devices where the driver may be actively managing hardware components. Organizations should consider implementing immediate mitigations including driver updates, access control restrictions, and monitoring for suspicious DeviceIoControl activity patterns that may indicate exploitation attempts.
Mitigation strategies should include immediate deployment of patched versions of Jungo DriverWizard WinDriver, as well as implementing process monitoring and device access controls to limit potential exploitation vectors. System administrators should also consider disabling unnecessary device driver functionality and implementing runtime application control measures to prevent unauthorized execution of vulnerable driver components. The vulnerability highlights the critical importance of proper input validation in kernel-mode drivers and underscores the necessity for comprehensive security testing of device drivers before deployment in production environments. Organizations should also establish procedures for monitoring system stability and implementing rapid response protocols when system crashes or BSOD events occur, as these may indicate exploitation of similar kernel-level vulnerabilities within their infrastructure.