kdhacker64_ev.sys is a kernel driver from Beijing Kingsoft Security software bundled with Kingsoft AntiVirus and Liebao Browser. The driver exposes a kernel heap buffer overflow via IOCTL 0x120140 with approximately 512 bytes of overflow into adjacent kernel pool allocations. The root cause is a size validation mismatch -- input is validated at 0x488 bytes per element but only 0x248 bytes are allocated per element. RtlInitUnicodeString is called on user-controlled buffers without null termina...
sc.exe create KDHacker binPath=C:\windows\temp\kdhacker64_ev.sys type=kernel && sc.exe start KDHackersc.exe create KDHacker binPath=C:\windows\temp\kdhacker64_ev.sys type=kernel && sc.exe start KDHackerSandbox: execFile · Timeout: 30s
security.privilegeescalation.kernel-exploit examples:
kdhacker64_ev.sys is a kernel driver from Beijing Kingsoft Security software bundled with Kingsoft AntiVirus and Liebao Browser. The driver exposes a kernel heap buffer overflow via IOCTL 0x120140 with approximately 512 bytes of overflow into adjacent kernel pool allocations. The root cause is a size validation mismatch -- input is validated at 0x488 bytes per element but only 0x248 bytes are allocated per element. RtlInitUnicodeString is called on user-controlled buffers without null terminator bounds checking, producing oversized ANSI strings that overflow 64-byte destination buffers. No authentication is required to access the device. The driver also includes TDI hooks for TCP/UDP/RawIP interception, process creation notification callbacks, filesystem filter attachments to NTFS/FAT/CDFS, camera device monitoring, and HTTP header parsing. Other Kingsoft drivers (ksapi.sys, mydrivers.sys) are already tracked in LOLDrivers.
Use Case: Elevate privileges
Required Privileges: kernel
MITRE ATT&CK: T1068