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ID:

meter-io-96

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Date:

Status:

Incident Count:

February 5, 2022

Verified

1

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REKT

Contributor:

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zerofriction.io

KYC By:

KYC:

No

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50 pts

Audit By:

Audits:

Consensys Diligence

Loss Amount:

7,700,000

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Recovered:

-

Rewards:

Ticker:

USD, meterBNB

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100 pts
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Platform:

Type:

Category:

Method:

Data Sources:

Binance Smart Chain, Ethereum, Moonriver

Protocol

Bridge

Contract Vulnerabilities

Extended Method:

incorrect token wrap and unwrapping validation

Days in Operation:

1536

(4.21 Years)

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100 pts each

Meter Passport bridge has been hacked. Passport has a feature to automatically wrap and unwrap gas tokens like ETH and BNB for user convenience. The contract did not block direct interaction of the wrapped ERC20 tokens for the native gas token and did not properly transfer and verify the correct number of WETH transferred from the callers' address. A loss of $4.3M including 1391 ETH and 2.7 BTC has been recorded.

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