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ID:

definer-171

Date:

Status:

Incident Count:

December 13, 2021

Unverified

1

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REKT

Contributor:

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zerofriction.io

KYC By:

KYC:

None

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Audit By:

Audits:

Taka Security, Trail of Bits, Consensys Diligence

Loss Amount:

10,000

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Recovered:

-

Rewards:

Currency:

USD, USDT, CHE

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Key Indicators

Platform:

Type:

Category:

Method:

Data Sources:

Multi-Chain

Protocol

Lending

Contract Vulnerabilities

Extended Method:

Oracle manipulation

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Days in Operation:

0

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On December 13, the DeFi platform Definer oracle was attacked. This incident was caused by the problem of Definer’s implementation of the oracle in OEC. It used the token balance of a single liquidity pool at a point in time as the price source, which led to the accident. The implementation of Ethereum used ChainLink’s The oracle does not have this problem. The attacker exchanged 10,000 USDT for 30,765 CHE (loan interest & pledge position) through CherrySwap's CHE/USDT pool

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