CVE-2018-19323 in Gigabyte App Center
Summary
by MITRE
The GDrv low-level driver in GIGABYTE APP Center v1.05.21 and earlier, AORUS GRAPHICS ENGINE before 1.57, XTREME GAMING ENGINE before 1.26, and OC GURU II v2.08 exposes functionality to read and write Machine Specific Registers (MSRs).
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Analysis
by VulDB Data Team • 08/13/2026
The vulnerability identified as CVE-2018-19323 represents a critical security flaw within the low-level driver components of GIGABYTE's system management software ecosystem. This issue affects multiple GIGABYTE applications including APP Center, AORUS GRAPHICS ENGINE, XTREME GAMING ENGINE, and OC GURU II across various versions where the GDrv driver component fails to properly restrict access to sensitive hardware registers. The exposure occurs through the GDrv low-level driver which is responsible for direct hardware interaction and system-level operations, creating an unauthorized access vector that bypasses normal operating system security controls.
Machine Specific Registers represent a class of hardware registers that provide direct control over processor features including performance monitoring, power management, and security-related configurations. These registers are typically accessible only through privileged system operations and are protected by the operating system to prevent unauthorized modification that could compromise system integrity or enable malicious activities. The vulnerability allows unprivileged user-mode applications to directly read and write these MSRs through the exposed driver interface, fundamentally undermining the processor's security model and creating potential attack surfaces for privilege escalation exploits.
The operational impact of this vulnerability extends beyond simple information disclosure to encompass potential system compromise and unauthorized hardware manipulation. Attackers who can leverage this vulnerability gain the ability to modify processor behavior, potentially disabling security features like Intel's SMEP (Supervisor Mode Execution Protection) or SMAP (Supervisor Mode Access Prevention), which are designed to prevent user-mode code from accessing kernel memory. This capability enables sophisticated attacks such as kernel exploitation, rootkit deployment, and bypass of modern security mitigations that rely on proper MSR configuration. The vulnerability particularly affects systems running Windows operating systems where the driver interface is exposed to user applications without proper access controls.
From a threat modeling perspective, this vulnerability aligns with CWE-284 (Improper Access Control) and represents a classic case of insufficient privilege separation in system-level drivers. The ATT&CK framework categorizes this as a privilege escalation technique through driver manipulation, specifically targeting the 'Exploitation for Privilege Escalation' tactic. The vulnerability's exploitation requires minimal prerequisites since it involves direct driver interface access, making it particularly dangerous in environments where user applications have elevated privileges or where privilege escalation attacks are already underway. Organizations should consider this vulnerability as a potential entry point for advanced persistent threats that seek to establish persistent control over systems by manipulating core processor security features.
Mitigation strategies should focus on immediate driver updates from GIGABYTE to address the exposed functionality and proper access control implementation. System administrators should disable unnecessary driver interfaces and implement strict application whitelisting policies to prevent unauthorized access to the vulnerable GDrv components. The vulnerability also necessitates monitoring for suspicious driver activity and implementation of endpoint detection and response measures to identify potential exploitation attempts. Additionally, organizations should consider disabling MSR access for non-privileged applications and implementing proper driver signing requirements to ensure only trusted components can interact with system-level hardware registers. Regular security assessments of system management software and driver components should be conducted to identify similar exposure vulnerabilities that could compromise system integrity and security posture.