Sui DEX Cetus 表示,智能合约使用的开源库中存在被忽视的漏洞,导致 2.23 亿美元的损失

tokeninsight_newsPubblicato 2025-05-27Pubblicato ultima volta 2025-05-27

Cetus Protocol 确认其 CLMM 智能合约使用的开源库存在漏洞,导致 2.23 亿美元被盗

Sui 公链上的去中心化交易所 Cetus Protocol 近日确认,其 Concentrated Liquidity Market Maker(CLMM,集中流动性做市商)智能合约所使用的一个开源库存在缺陷,攻击者正是利用这一漏洞实施了价值 2.23 亿美元的攻击。

Cetus 表示,漏洞源于其 CLMM 合约依赖的 inter_mate 开源库中一个名为 checked_shlw 的方法,该方法在执行整数溢出保护时,错误地以 256 位进行校验,而非应有的 192 位。这一错误使攻击者能够注入异常高的虚假流动性,仅用极少的代币就可以反复操作提取池中资金。

据完整事件报告称,攻击手法包括使用闪电兑换操控池中价格,绕过溢出检查机制注入巨额虚假流动性,然后多次移除流动性以套现资产。

Cetus 指出,社交媒体上有传言将这次攻击与之前审计报告中提到的 MAX_U64 数学错误关联起来,实际上这是误导,“此次漏洞与该错误无关。”

攻击影响及初步响应

根据 Cetus 公布的时间线,攻击发生后 30 分钟内,其核心 CLMM 流动性池就被紧急关闭以防止进一步损失,但此时资金已被盗约 2.23 亿美元,导致多个 Sui 生态代币价格大幅波动。

攻击发生后约 1 小时 20 分钟,Sui 验证者开始对攻击者地址进行链上投票,超过 33% 的质押权重投票后,攻击者控制的地址(共持有约 1.62 亿美元)被“冻结”,即无法再在 Sui 网络进行交易。

此举引发部分社区质疑,认为此举暴露了 Sui 的中心化风险。但链上分析显示,攻击者早已将约 6000 万美元兑换为 USDC,跨链至以太坊,并进一步换成 ETH。

合约修复与追讨措施

Cetus 表示,漏洞合约已经修复并升级,但尚未重新上线。团队正与 Sui 安全团队及审计合作伙伴重新验证所有升级后的合约,确保其安全后再重启 CLMM 流动性池。

同时,Cetus 与区块链数据公司 Inca Digital 向攻击者发出请求,希望其归还被转移至以太坊的 20,920 枚 ETH 及 Sui 钱包中被冻结的资金,并承诺若攻击者归还资金,将不采取进一步法律或公开行动。

截至目前,Cetus 尚未收到任何来自攻击者的回复。团队随后悬赏 500 万美元,征集能成功识别并协助抓捕攻击者的有效线索,奖金由 Sui 基金会自行决定发放。

社区治理与资金追回提案

Cetus 也提议通过链上投票的方式决定是否应通过协议升级,解冻并返还这 1.62 亿美元资金。Cetus 表示:

“我们无法单方面决定这一升级是否应执行。我们建议发起一次链上投票,由包括验证者和 SUI 质押者在内的网络核心参与者共同决定是否应恢复并归还用户资产。”

下一步计划:更强的安全体系

Cetus 承认,尽管上线以来在智能合约审计和系统安全上投入巨大,但此次攻击表明以往的“安全感”是虚假的,“我们必须做得更多”。

接下来,Cetus 将采取以下加强措施:

实施更严密的实时安全监控

引入更强的风险管理配置

扩大测试覆盖范围

增加审计频次,并以里程碑为单位进行评估

推行公开透明的代码覆盖率报告机制

此外,Cetus 正与生态合作伙伴制定流动性恢复计划,协助受影响的 LP 用户,并协调社区共同决定是否通过升级返还资金。

与此同时,法律程序正在进行中,但团队依然希望通过白帽途径和平解决,并表示即将向攻击者发送最后一封通知函。

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