CVE-2018-8990 in Windows Master
Summary
by MITRE
In Windows Master (aka Windows Optimization Master) 7.99.13.604, the driver file (WoptiHWDetect.SYS) allows local users to cause a denial of service (BSOD) or possibly have unspecified other impact because of not validating input values from IOCtl 0xf1002010.
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Analysis
by VulDB Data Team • 01/16/2020
The vulnerability identified as CVE-2018-8990 resides within Windows Master version 7.99.13.604, specifically targeting the WoptiHWDetect.SYS driver component. This driver serves as a hardware detection utility within the optimization software suite, designed to identify and manage system hardware components. The flaw manifests through inadequate input validation mechanisms within the driver's implementation of IOCTL 0xf1002010, a specific control code used for communication between user-mode applications and kernel-mode drivers. This particular IOCTL handler fails to properly validate data received from user-space applications, creating a potential attack surface that could be exploited by malicious actors.
The technical nature of this vulnerability places it squarely within the realm of kernel-mode exploitation, where improper input validation can lead to system instability and potential privilege escalation. When a local user executes a crafted application that sends malformed input to the vulnerable IOCTL handler, the driver processes these unvalidated parameters without proper bounds checking or sanitization. This lack of input validation creates conditions where memory corruption can occur, leading to system crashes manifesting as Blue Screen of Death (BSOD) errors. The vulnerability's classification as a denial of service issue indicates that while the primary impact is system instability, there exists potential for more severe consequences including arbitrary code execution or privilege escalation depending on exploitation circumstances.
From an operational perspective, this vulnerability represents a significant security risk for systems running the affected Windows Master software. Local users who gain access to the system can leverage this flaw to either disrupt normal operations through system crashes or potentially escalate privileges to gain unauthorized access to system resources. The vulnerability's impact extends beyond simple service interruption as it affects the underlying driver architecture that interfaces with critical system hardware components. Security analysts should note that this vulnerability aligns with CWE-129, Input Validation, and CWE-787, Out-of-bounds Write, which are fundamental weaknesses in software security design. The ATT&CK framework categorizes this vulnerability under privilege escalation techniques, specifically targeting driver-level exploitation methods that can be used to bypass system security controls.
Mitigation strategies for CVE-2018-8990 should prioritize immediate software updates from the vendor, as the affected Windows Master version contains this known vulnerability. System administrators should implement strict access controls to limit local user privileges and monitor for unauthorized software installations that might introduce similar vulnerabilities. The recommended approach includes disabling or removing the vulnerable driver component until a patched version is available, implementing application whitelisting policies to prevent execution of untrusted code, and conducting thorough security audits of installed software to identify other potentially vulnerable components. Organizations should also consider deploying intrusion detection systems that can monitor for suspicious IOCTL activity patterns and establish incident response procedures specifically addressing kernel-mode exploit scenarios. Additionally, regular security assessments should verify that all system drivers maintain proper input validation mechanisms and that the overall software supply chain does not introduce similar vulnerabilities through third-party components.