The LHA.sys driver before 1.1.1811.2101 in LG Device Manager exposes functionality that allows low-privileged users to read and write arbitrary physical memory via specially crafted IOCTL requests and elevate system privileges. This occurs because the device object has an associated symbolic link and an open DACL.
This vulnerability allows local attackers to escalate privileges on vulnerable installations of VirIT eXplorer Anti-Virus. An attacker must first obtain the ability to execute non-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the processing of crafted IOCTL by the VIAGLT64.SYS kernel driver. The issue lies in the failure to properly validate user-supplied data which can result in an arbitrary write condition. An attacker can leverage this vulnerability to execute arbitrary code under the context of kernel. This module will elevate the privileges of the current agent instead of installing a new one.