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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”
5 u1 ~3 q( L! z21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。8 L& D' W, \5 Y/ Z% j) Y \, J
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* I% S' {. m0 `! x) w" a
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。
$ n- [$ y& F# M" C黑客重入攻击
1 a/ j9 ?3 o, |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
: H& U# F/ C# E5 L0 q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 o9 p- J' k o1 s" L G
存在错误假设,而能够执行攻击。
2 `0 J" j6 ` B; T* |5 g5 e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( s4 l. F/ d* ~6 \ W! R& w
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
. Q) C1 m0 A$ f! z0 a/ R" x% W; T的问题,该合约不属于先前Coinic合约审计范围。
4 m/ [) r4 p# l9 YCurve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。+ `' m, L0 P- a
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
8 \- w! N! R& A f6 k者可以转移比他们存入要更多的流动性代币。' s; B( m8 I W3 n7 D: D! q
Conic Finance遭二度攻击,全面关闭资金池
. N! }$ x4 v$ C+ f: f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。# y6 n! K! w/ q+ ]+ R
“大约四个小时前,我们收到了影响$crvUSD Omnipool的漏洞利用警报。作为对此的回应,并考虑到今天的
& s4 w1 e6 z' `% v' |ETH Omnipool漏洞,我们立即实施了最大程度的安全措施并暂时关闭了所有Omnipool。”
. u, V+ |4 d* i( M官方后续推文指出,第二次攻击与ETH Omnipool的重入漏洞无关。攻击者通过利用crvUSD Omnipool获利约4 f Y/ A- H# N/ y" M/ s b2 G
30万美元。随后官方发布通知,建议所有用户立即申请退款并撤销对Conic的应用程式批准,并承诺将全额退还" z' ]6 ^: O' t5 V2 P
用户丢失的代币,还将为符合条件的账户发放1~10,000枚CNC代币作为补偿。
3 O: ?& r3 i) rCNC币价失血77%3 ]6 T) V2 m. L3 d
受黑客攻击事件影响,Defillama数据显示,Conic Finance的总锁仓量(TVL)从1.56亿美元暴跌近67%,目前仅剩5 O" F* ~; W5 O t
5,193万美元;原生代币Conic(CNC)更一度跌超77%至1.34美元,截稿前报2.84美元,近24小时跌幅仍高达* Z0 s0 R* x: B$ H$ r% n8 T4 M
52.8%。
+ l3 ^/ z9 K( s. b* T' Y0 A
* e) n y' {2 O/ Z2 k: s |
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