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慢雾:Optimism 最大 NFT 平台 Quixotic 出现漏洞,大量用户资产被盗

2022-07-01 16:24:25

链捕手消息,据慢雾安全团队情报,2022年 7 月 1 号,Optimism 生态最大 NFT 平台 Quixotic 出现严重漏洞,大量用户资产被盗,提醒在该市场上进行过交易的用户尽快取消授权。

据悉,平台在市场合约的 fillSellOrder 函数中仅对卖单进行了检查,并未对买家的买单做检查。故攻击者首先创建了任意的 NFT 合约,调用 fillSellOrder 函数生成卖单,将 buyer 参数传为受害者地址、paymentERC20 参数传为需要盗取的代币地址,即可将对该市场合约有授权的用户的代币转走获利。

用户可利用 Optimism 官方浏览器的授权管理功能 https://optimistic.etherscan.io/tokenapprovalchecker 查看或者取消授权。

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