CVE-2018-19322 in Gigabyte App Center
Summary
by MITRE
The GPCIDrv and GDrv low-level drivers 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 expose functionality to read/write data from/to IO ports. This could be leveraged in a number of ways to ultimately run code with elevated privileges.
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Analysis
by VulDB Data Team • 11/07/2025
The vulnerability identified as CVE-2018-19322 represents a critical security flaw in low-level hardware drivers distributed by GIGABYTE as part of their system management and overclocking software suites. This issue affects multiple GIGABYTE applications including GPCIDrv and GDrv drivers that are integral components of the GIGABYTE APP Center, AORUS GRAPHICS ENGINE, XTREME GAMING ENGINE, and OC GURU II products. These drivers operate at a privileged level within the Windows operating system, providing direct hardware access capabilities that are typically restricted to legitimate system functions.
The core technical flaw lies in the improper implementation of I/O port access controls within these drivers. The affected drivers expose functionality that allows arbitrary read and write operations to system I/O ports, which are normally protected hardware resources that require kernel-level privileges to access. This design flaw enables malicious actors to bypass normal operating system security boundaries and directly manipulate hardware components. The vulnerability stems from the drivers' failure to properly validate or restrict access to these privileged I/O operations, creating an attack surface that can be exploited by local users or attackers with limited privileges.
From an operational impact perspective, this vulnerability creates a severe privilege escalation vector that can be leveraged to execute arbitrary code with system-level privileges. Attackers can utilize the exposed I/O port functionality to manipulate hardware registers, inject malicious code into running processes, or even modify the system's boot process. The implications extend beyond simple code execution as the compromised drivers can potentially be used to establish persistent backdoors, disable security features, or gain complete system control. This vulnerability particularly affects gaming and enthusiast computing environments where users often run with elevated privileges, making exploitation more likely and potentially more damaging.
The attack surface for this vulnerability aligns with several ATT&CK framework techniques including privilege escalation through kernel exploits and persistence mechanisms. The vulnerability can be classified under CWE-264, which addresses permissions, privileges, and access control issues, specifically focusing on inadequate protection of I/O ports. Security researchers have noted that the affected drivers operate with excessive privileges, violating the principle of least privilege that should govern all system components. Organizations should immediately implement mitigations including driver signature enforcement, disabling unnecessary hardware access, and applying vendor-provided patches. The vulnerability demonstrates the critical importance of proper driver security implementation and the potential risks associated with exposing low-level hardware access to untrusted code execution environments.