T05 · Unauthorized Access and Privilege Escalation
Error
- Location
src/payment_skill.py:220- Finding
Refund operations do not enforce the declared approval requirement
- Content
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Dict[str, Any]: try: logger.info(f"发起退款: {transaction_id}, 金额: {amount}") if not transaction_id: raise ValueError("交易 ID 不能为空") if amount is not None and amount <= 0: raise ValueError("退款金额必须大于 0") result = await self.api_client.refund_payment( transaction_id=transaction_id, amount=amount ) ``` ```python elif args.command == 'refund_payment': params = { 'transaction_id': args.transaction_id } if args.amount: params['amount'] = args.amount if args.reason: params['reason'] = args.reason ``` ### Technical Analysis The Skill manifest explicitly marks `refund_payment` as requiring approval, but this requirement is not enforced in the runtime implementation. The refund method validates only that a transaction identifier exists and that an optional amount is positive. It does not require an approval token, authenticated user confirmation, authorization context, or other proof that the refund was approved. The CLI also invokes the same runtime path directly. Therefore, the manifest attribute is only descriptive and does not create an effective security boundary. Authorization must be enforced at the point where the financial action is performed, rather than relying on metadata or an external caller to behave correctly. ### Attack Path 1. An attacker, compromised Agent, or unauthorized process gains permission to execute the Skill CLI ...[truncated 1013 chars]- Remediation
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