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[虚拟币交流]
Gains Network分支漏洞使交易者每笔交易可获900%利润(转)
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根据区块链安全专家的说法,Gains Network的一个分支—一个在Polygon和Arbitrum上的DeFi产品生态系统——允许交易者在每一笔交易中声称获得10倍收益,无论他们交易的代币价格如何。
6 V; y" o, `1 Q' a2 K; d Gains Network 漏洞
! `" B0 R! a# E7 s; f根据DeFi Llama的数据,Gains Network的锁定总价值(TVL)为2029万美元。自2023年5月成立以来,其已处理250亿美元的衍生品交易量。 ! L" N5 V/ F. Z! A0 _
一份来自Zellic的4月19日报告突出了一个影响该协议分支的错误,该错误允许攻击者设置任意高的买入限价订单,并自动赢得每一笔交易。 1 t) t' ^" Z" x- P& `5 z3 L5 }
工作原理如下:当订单被开启时,止损价格会被存储在协议的“currentPrice”变量中,该变量用来计算盈亏。因此,如果用户将其止损/亏损价格设置在开盘价格之上,他们可以无风险地从交易中获利。 0 m% F! E8 t3 b/ r7 e) m
例如,假设比特币的价格为60,000美元,交易者输入的开盘价为59,000美元,止损/亏损价为61,000美元。如果价格跌至59,000美元,交易将被开启,但价格会立即低于交易者的止损价,触发立即退出。 & t( r- K( S* `9 u+ K
在正常情况下,这应该使交易者的利润恰好为0美元。然而,由于止损价格61,000美元被设置为协议的“当前价格”,系统因此为用户记录了2000美元的利润。
9 X9 G/ z, M" N9 i5 N 修复漏洞
6 B4 q% a& r% L: S8 J$ N* z; T如果攻击者进行足够多的交易,并且设定足够高的止损/亏损值,他可能完全耗尽协议的资金。虽然协议中包含了一个检查,以阻止那些试图将止损价格设定在买单开盘价之上的人,但还是发现了其他漏洞,允许攻击者绕过这一检查。 ( N# _1 k% f& a/ l: G4 Y* @
Zellic表示,使用特定数字,交易者可以保证获得900%的利润。
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这个特定的漏洞只在Gains Network的一个分支中被发现,而不是Gains本身。然而,Zellic还发现了一个影响Gains实际协议早期版本的漏洞,让交易者在卖单上获得900%的利润。
" _. c) s9 p! C3 \9 n) m
Zellic通知了管理Gains分支的多个团队,包括Gambit Trade、Holdstation Exchange和Krav Trade等关于这些漏洞,所有这些团队都确保了他们的协议不再存在漏洞。不过,Zellic警告说,其他分支仍可能面临损失的风险。 ! @& R# D5 Y0 f9 M6 W9 K
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