Sun .
22 Dec . 2024
OKX DEX Suffers Loss of $424k In a Security Exploit
The attack supposedly occurred after a Proxy Admin private key leak that upgraded the DEX contract to steal funds.
OKX DEX has experienced a loss of $424,000 due to a security breach. The breach occurred when the Proxy Admin's private key was leaked, allowing the attacker to upgrade the DEX contract and steal funds.
According to SlowMist, a blockchain security firm, the issue arose with the claimTokens function in the OKX DEX smart contract. This function enables a trusted DEX Proxy to transfer funds authorized by users through the TokenApprove contract.
On December 12, the Proxy Admin Owner of OKX DEX upgraded the DEX Proxy contract with a new implementation.
This implementation directly called the claimTokens function from the DEX contract. As a result of the compromise of the Admin Proxy, the OKX team deactivated the DEX.
The attacker managed to steal approximately $424,000 from 18 addresses that had approved asset approval.
PeckShield, another blockchain security researcher, has estimated the total loss from this exploit to be over $2.76 million.
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