BlockSec发布闭源合约重大漏洞分析:SwapNet与Aperture Finance因输入验证不足遭攻击损失1700万美元

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Odaily星球日报讯 BlockSec 发布闭源合约重大漏洞分析,其检测到一系列针对 SwapNet 和 Aperture Finance 部署在以太坊、Arbitrum、Base 和 BSC 上的受害合约的可疑交易,总损失超过 1700 万美元。从根本上看,这两起事件的根源都很简单,受害合约由于输入验证不足而存在任意调用漏洞,攻击者可以利用该漏洞滥用现有的代币授权,从而 transferFrom 窃取资产。

尽管 SwapNet 和 Aperture Finance 事件影响了不同的协议和区块链,但两者的根本问题并不复杂:用户控制的底层调用,以及持有代币授权的合约中输入验证不足。

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