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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”
" J8 Y) v2 b' _. Y21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。
" ?; v k% ], {$ m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
5 x# Y- x% G: [- q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。
6 l0 @+ f) t+ {' L% s7 F黑客重入攻击
3 P5 L0 u. S2 e( r0 n9 c: f0 VConic 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
/ b% h4 t3 b$ b5 ~9 _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
( E7 H, e# U! j4 q/ }, G存在错误假设,而能够执行攻击。
+ S; |8 J* x7 |: V* w8 ?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5 }; L' T2 y6 p0 k( V
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( @, m% p1 {( q. R0 Z- c5 K
的问题,该合约不属于先前Coinic合约审计范围。9 h8 S4 v1 M, X
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。; Y$ E& ]5 h0 T5 C; W
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* j' E$ Y, D9 R
者可以转移比他们存入要更多的流动性代币。, E. f* C# x. \4 p0 o
Conic Finance遭二度攻击,全面关闭资金池; N' C0 Z9 O* m) C6 S4 t/ {
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。
: X d+ R# J# |; p“大约四个小时前,我们收到了影响$crvUSD Omnipool的漏洞利用警报。作为对此的回应,并考虑到今天的3 u& T: k! O+ {& O* N6 ^
ETH Omnipool漏洞,我们立即实施了最大程度的安全措施并暂时关闭了所有Omnipool。”; ~1 X6 f' P0 h6 u3 a8 M& j
官方后续推文指出,第二次攻击与ETH Omnipool的重入漏洞无关。攻击者通过利用crvUSD Omnipool获利约
7 r/ w1 }1 D8 x" L( ~- v; |30万美元。随后官方发布通知,建议所有用户立即申请退款并撤销对Conic的应用程式批准,并承诺将全额退还
# f% U, _! [7 k L+ ?+ R8 p9 q- U0 G用户丢失的代币,还将为符合条件的账户发放1~10,000枚CNC代币作为补偿。; u& p$ r9 V% {- N) S
CNC币价失血77%
' o3 _3 p& w _& q1 P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
- K; A9 T8 L5 ^2 p% G4 }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
9 |& Q+ Q* R/ \) T" j2 D G, p52.8%。
; }. x. ?5 g( c, @4 [
9 w- O: \# X, S6 ]* ^ |
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