CVE-2018-18537 in Aura Sync
Summary
by MITRE
The GLCKIo low-level driver in ASUS Aura Sync v1.07.22 and earlier exposes a path to write an arbitrary DWORD to an arbitrary address.
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Analysis
by VulDB Data Team • 06/22/2023
The vulnerability identified as CVE-2018-18537 resides within the GLCKIo low-level driver component of ASUS Aura Sync software version 1.07.22 and earlier. This driver serves as a critical interface between the hardware components of ASUS motherboards and the software ecosystem, enabling users to customize lighting effects and system parameters through the Aura Sync application. The flaw represents a severe privilege escalation vulnerability that fundamentally undermines the security boundaries of the system. The exposed driver interface lacks proper input validation and access control mechanisms, creating a pathway for malicious actors to execute arbitrary write operations with elevated privileges.
The technical nature of this vulnerability stems from improper kernel-mode driver implementation where the GLCKIo driver fails to validate memory addresses and data values before performing write operations. This flaw allows an attacker to specify any memory address and write a 32-bit DWORD value to that location, effectively bypassing normal operating system security restrictions. The vulnerability operates at the kernel level, meaning that successful exploitation can result in complete system compromise without requiring user interaction or elevated privileges. The lack of proper bounds checking and address validation creates an arbitrary write primitive that can be leveraged to modify critical system data structures, overwrite function pointers, or inject malicious code into protected memory regions.
The operational impact of this vulnerability is extensive and potentially catastrophic for affected systems. An attacker with local access to a machine running the vulnerable ASUS Aura Sync software can achieve privilege escalation from standard user level to kernel-level execution. This capability enables full system compromise including but not limited to data exfiltration, persistent backdoor installation, and complete control over system hardware components. The vulnerability affects a wide range of ASUS motherboards and systems that utilize the Aura Sync lighting control software, creating a significant attack surface across multiple hardware platforms and user environments. The arbitrary write capability can be exploited to modify system boot processes, alter security-related kernel parameters, or corrupt critical system files.
Mitigation strategies for CVE-2018-18537 should focus on immediate software updates and system hardening measures. The most effective approach involves updating to ASUS Aura Sync version 1.07.23 or later, which includes proper input validation and access control mechanisms within the GLCKIo driver. System administrators should also implement application whitelisting policies to restrict execution of unauthorized software and disable unnecessary hardware control features when not required. The vulnerability aligns with CWE-787: "Out-of-bounds Write" and represents a classic example of kernel-mode privilege escalation through improper input validation. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and persistence, specifically T1068: "Local Privilege Escalation" and T1543: "Create or Modify System Process." Organizations should also consider implementing memory protection mechanisms such as kernel address space layout randomization and exploit protection features to further reduce the attack surface. Regular security assessments and vulnerability scanning should be conducted to identify and remediate similar issues in other system components and third-party drivers.