Arbitrum-based Rodeo Finance exploited for second time, $1.5M stolen

Arbitrum-based decentralized finance protocol Rodeo Finance was exploited for $1.53 million on July 11. The DeFi protocol was exploited using a code vulnerability in its Oracle, leading to a loss of over 810 Ether .

According to data shared by blockchain analytic firm PeckShield, the exploiter later bridged the stolen funds from Arbitrum to Ethereum and swapped 285 ETH for unshETH. The exploiter then deposited the ETH on Eth2 staking. Finally, the exploiter routed the stolen ETH using the popular mixer service Tornado Cash, which exploiters often use as an exit route to obscure the transaction’s footprint.

However, it offers a vulnerability for exploiters to manipulate these oracles by artificially skewing the calculated average price of an asset. This allows them to gain the upper hand and exploit the protocol during a transaction. An exploiter first borrows a large sum of an asset and then artificially manipulates the price to buy the same asset at a deflated price. Later, the exploiter returns the loan and makes a profit based on the low price managed by manipulations.

According to data shared by blockchain analytic firm peckshield, the exploiter later bridged the stolen funds from Arbitrum to Ethereum and swapped 285 ETH for unshETH. The exploiter then deposited the ETH on Eth2 staking.

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