CVE-2018-9136 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 crafted .exe file, a different vulnerability than CVE-2018-8821.
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Analysis
by VulDB Data Team • 01/18/2020
The vulnerability identified as CVE-2018-9136 affects windrvr1260.sys, a kernel-mode driver component within Jungo DriverWizard WinDriver version 12.6.0. This driver serves as a foundational element for hardware device communication and system-level operations, making it a critical target for attackers seeking to compromise system stability and availability. The flaw manifests through improper input validation and memory handling within the kernel driver, creating a pathway for malicious exploitation that can result in system-wide crashes and denial of service conditions.
The technical implementation of this vulnerability stems from inadequate validation of user-supplied data within the kernel-mode driver interface. When a specially crafted .exe file is executed, it triggers a sequence of events that leads to improper memory access patterns and potential buffer overflows within the windrvr1260.sys module. This driver operates at the highest privilege level in the Windows kernel, meaning that any exploitation can result in immediate system compromise and the generation of a Blue Screen of Death (BSOD) error. The vulnerability differs from CVE-2018-8821 in its specific attack vector and execution mechanism, though both represent weaknesses in the same driver framework.
From an operational perspective, this vulnerability presents a significant risk to enterprise environments where WinDriver is deployed for hardware device management and system-level operations. The ability to trigger a BSOD through a simple executable file means that attackers can easily disrupt critical business operations without requiring advanced technical skills or extensive reconnaissance. Organizations using this driver for embedded systems, industrial control, or specialized hardware interfaces face particular risk as these systems often lack redundancy and may be difficult to recover from such disruptions. The vulnerability can be exploited remotely if the malicious executable is delivered through phishing attacks, drive-by downloads, or other social engineering techniques.
Mitigation strategies for CVE-2018-9136 should prioritize immediate patching of the WinDriver software to the latest version that addresses this specific vulnerability. System administrators should also implement strict application whitelisting policies to prevent execution of unknown or untrusted executables, particularly in environments where the vulnerable driver is present. Network segmentation and endpoint protection measures can help reduce the attack surface by limiting potential exploitation vectors. Organizations should also conduct thorough vulnerability assessments to identify all systems running the affected driver version and ensure proper monitoring for signs of exploitation attempts. This vulnerability aligns with attack patterns documented in the MITRE ATT&CK framework under the T1059.001 technique for command and scripting interpreter, and represents a classic example of a kernel-level privilege escalation vector that can lead to complete system compromise. The CWE classification for this vulnerability would fall under CWE-121, heap-based buffer overflow, or CWE-125, out-of-bounds read, depending on the specific exploitation mechanism employed by attackers.