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[虚拟币交流]
Conic Finance二度被黑!损失超350万美元 代币CNC暴跌(转载)
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去中心化金融(DeFi)协议Curve生态的收益聚合器和流动性管理协议“Conic Finance”" M( [3 m$ E* z' c. S
21日晚间以来已爆出遭遇2次黑客攻击,该平台的ETH Omnipool资金池首先遭到漏洞利用。+ `) {' k, Y- B
据区块链安全公司Beosin的监测账号Beosin Alert周五晚间7点左右报告,Conic Finance遭黑客在一笔交易中被
6 b# e# r- w% Q" C8 o) v盗走326万美元资金,约1,727枚以太币,目前全部ETH赃款已被转移到新地址。2 C9 ~" @. G" u8 X6 N2 i
黑客重入攻击
& I8 T7 ]: d: T8 t& p" uConic Finance官方随后确认遭到攻击,并宣布于前端禁用ETH Omnipool存款,称没有没有其他Omnipools受( L) N3 x" S9 m3 M
到此漏洞的影响,并分析这次事件根本原因是重入攻击,由于对Curve V2池中ETH的Curve元注册表返回的地址
$ o0 _ ^7 T0 V# N存在错误假设,而能够执行攻击。
* i& F: ^/ p( r7 Q区块链安全公司派盾(Peckshield)初步分析称,漏洞来自Coinic编写的Curve LP Oracle V2合约,他们先前的审计+ z9 N! N* i t: Q
发现了类似的唯读型重入(read-onlyreentrancy)问题。然而,新推出的Curve LP Oracle V2合约中也出现了同样, e& V; n' F# v2 A
的问题,该合约不属于先前Coinic合约审计范围。5 o) f( U. J7 {3 ]
Curve则在下回应,由Coinic编写的Curve LP Oracle V2合约算法看似没有错误,可能是设定错误导致漏洞。
, w4 i2 @' F5 bBeosin解释,此次重入攻击,攻击者利用此漏洞来操纵steCRV、cbETH/ETH-f、rETH-f等代币的价格,使得攻击/ I/ O% S p: D* V2 B9 N. m; C4 d
者可以转移比他们存入要更多的流动性代币。
# U) T5 B; }6 _ TConic Finance遭二度攻击,全面关闭资金池+ C9 W$ k' T8 C- w) G( R6 E: I
今日凌晨,Conic官方公告关闭所有Omnipool存款,并在早上7点时暂时全面关闭Omnipool。* O0 B0 ]; [$ I, a( n" ?* G% S2 ~
“大约四个小时前,我们收到了影响$crvUSD Omnipool的漏洞利用警报。作为对此的回应,并考虑到今天的
+ E$ G' r' \+ I) L0 H( O7 DETH Omnipool漏洞,我们立即实施了最大程度的安全措施并暂时关闭了所有Omnipool。”
, m$ z" F+ N d+ ^3 y& O3 x1 B# N官方后续推文指出,第二次攻击与ETH Omnipool的重入漏洞无关。攻击者通过利用crvUSD Omnipool获利约
2 Y1 e7 ^9 m+ G d- o30万美元。随后官方发布通知,建议所有用户立即申请退款并撤销对Conic的应用程式批准,并承诺将全额退还
5 z* B$ Z) X+ H& J( }7 h" f+ b用户丢失的代币,还将为符合条件的账户发放1~10,000枚CNC代币作为补偿。
6 ^5 y5 @9 \( S+ L. z- CCNC币价失血77%
7 h# J2 W1 Y- h, Y; ^ V受黑客攻击事件影响,Defillama数据显示,Conic Finance的总锁仓量(TVL)从1.56亿美元暴跌近67%,目前仅剩
4 ]0 R. F* S" J+ c3 W5,193万美元;原生代币Conic(CNC)更一度跌超77%至1.34美元,截稿前报2.84美元,近24小时跌幅仍高达
# u, P/ [1 A+ m B% R# Q$ y52.8%。( m8 Y0 F; d. d5 n2 i
0 y' Y. H$ w( C
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