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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”
* h8 B5 d( O" L A1 O) l9 i21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。
' @( N3 t$ S( ~, 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
! a# t2 H6 c! F" U+ Y a! L" D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。
# P5 g' X* S1 p# i& I! y黑客重入攻击
: K9 C: j ]( m. L. cConic 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
% j* Z5 j# Z# M' G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1 C- X0 y, D. o2 _, g+ Q2 u
存在错误假设,而能够执行攻击。
9 I) f& R% Y4 p$ J- T, m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; h# X# \* C, `. W! U0 G, 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
# B' i& z/ r! W' o# Q的问题,该合约不属于先前Coinic合约审计范围。
3 [" f5 B+ f9 y5 q2 JCurve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。
; g E2 M. c) X% V" HBeosin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% {4 _( ?# L7 n3 G
者可以转移比他们存入要更多的流动性代币。
+ ~; q# H- X, Z) D# R+ j- eConic Finance遭二度攻击,全面关闭资金池
5 J) q m* u8 A/ V; Q3 D3 g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。$ L3 Q4 k1 F2 v$ x
“大约四个小时前,我们收到了影响$crvUSD Omnipool的漏洞利用警报。作为对此的回应,并考虑到今天的% a4 _" \" J- \8 q- a s# I# r
ETH Omnipool漏洞,我们立即实施了最大程度的安全措施并暂时关闭了所有Omnipool。”
' J1 r! J, ^$ H! U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
# h! Q+ [* q0 ~4 ^) w0 v* ^! U30万美元。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 ?2 n1 }$ C/ t0 |
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/ T/ @' ?( z
CNC币价失血77%( W: L. R% o m9 W5 j+ {- Q0 G
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" w) q' F: L2 R
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# J6 _; P4 j. `) J% J" _+ L/ C
52.8%。$ ]1 v$ @6 e( w! O, n/ M
|" |8 [+ o9 v) o |
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