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DPC 代币合约遭受黑客攻击,损失逾10万美元

2022-09-10 10:53:27

链捕手消息,据 Beosin EagleEye 平台监测显示,DPC 代币合约遭受黑客攻击,损失约 103755 美元。

Beosin 安全团队分析发现攻击者首先利用 DPC 代币合约中的 tokenAirdop 函数为满足领取奖励条件做准备,然后攻击者使用 USDT 兑换 DPC 代币再添加流动性获得 LP 代币,再抵押 LP 代币在代币合约中。前面的准备,是为了满足领奖条件。然后攻击者反复调用 DPC 代币中的claimStakeLp函数反复领取奖励。因为在getClaimQuota函数中的” ClaimQuota = ClaimQuota.add(oldClaimQuota[addr]);”,导致奖励可以一直累积。最后攻击者调用 DPC 合约中 claimDpcAirdrop 函数提取出奖励(DPC代币),换成 USDT 离场。目前被盗资金还存放在攻击者地址,Beosin 安全团队将持续跟踪。

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