Vesper Finance Hack

TOTAL LOST $3.4M
Medium Oracle Manipulation & Price Manipulation ethereum

What happened

The attacker's address:

https://etherscan.io/address/0xa3f447fe…619264

The attacker:

- received ~100 ETH from Tornado Cash to ensure his privacy:

https://etherscan.io/tx/0x1423391a…5f8cba

- swapped 56.81 ETH to 254,783 USDC

-swapped 232,509 USDC to 222,403 VUSD on the Uniswap v3

- added liquidity into "infinity" price range using 0 VUSD and 0.1 USDC:

https://etherscan.io/tx/0x89d0ae4d…ecf4c5

- deposited VUSD as collateral into the Vesper Rari Fuse pool #23 and was able to borrow all available assets:

https://ethtx.info/mainnet/0x8527fea5…af8092/

- The Rari lending market received the VUSD price using Rari's price oracle:

https://etherscan.io/address/0xb3c8ee73…36d8fb

, and valued VUSD collateral at a price of “infinity”

- swapped stolen assets on ETH:

https://etherscan.io/tx/0x70d6ff9f…19bc7d

- deposited ETH into Tornado Cash mixer:

https://bloxy.info/txs/calls_from/0xa3f447fe…619264?signature_id=994162&smart_contract_address_bin=0x722122df…5b6967

Case & protocol details

Classification Protocol Logic / Yield Aggregator / Oracle Manipulation
Protocol Type Exploit/Other
Affected asset / contract VUSD
Smart Contract Language Solidity
Official Website vesper.finance/
Protocol Twitter/X @VesperFi

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