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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”" O- l" X. u1 ~: E1 Y
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。5 @ E( W c) ~& e2 n
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/ P! V% C# \1 A5 t4 _4 r3 _2 M
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。
' G! @9 X) `- j6 h; B/ l黑客重入攻击( W* x4 d3 v& e1 `' R4 Y2 a& C
Conic 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
q4 j& Q F4 @6 U( A) 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3 \6 {9 m4 {# Y: e$ ^
存在错误假设,而能够执行攻击。/ z3 J N7 Z' a9 v. y: N* D
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
# ~6 e# b# F' X9 n) u2 P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$ j$ N0 j5 M9 W2 F$ I9 a
的问题,该合约不属于先前Coinic合约审计范围。
3 Y- U% D, X& K6 I6 h& }- KCurve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。$ e! X/ B& t( d5 H' Q8 F
Beosin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
6 j1 q' O( }$ Y) o- u0 L/ l者可以转移比他们存入要更多的流动性代币。% d% o' w* _+ g
Conic Finance遭二度攻击,全面关闭资金池
2 h; w6 v$ w' C- G( P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。2 x- I/ [, R3 D! ^7 Q' V0 g0 \8 s! W
“大约四个小时前,我们收到了影响$crvUSD Omnipool的漏洞利用警报。作为对此的回应,并考虑到今天的
_+ _! I2 p* g( cETH Omnipool漏洞,我们立即实施了最大程度的安全措施并暂时关闭了所有Omnipool。”
6 x7 d& v6 w0 ~$ d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, V6 f% C+ ^ Y' J# ^
30万美元。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
) H. F! ^# }) Y, z: D* ]# y4 h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。
% ?& |9 o$ N, v; s4 }CNC币价失血77%( ?7 U; y4 O) @1 f, m6 s9 j: o
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 D5 n4 v$ S! I6 M
5,193万美元;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
0 f( @4 C* N: {52.8%。
3 H* d( ~3 J# D2 G8 J3 b% z, X/ p: v, W9 K
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