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ID:

stader-nearx-1055

Date:

Status:

Incident Count:

August 17, 2022

Verified

1

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REKT

Contributor:

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web3rekt.com

KYC By:

KYC:

None

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Audit By:

Audits:

Halborn

Loss Amount:

830,000

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Recovered:

-

Rewards:

Currency:

USD, NEARX

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Key Indicators

Platform:

Type:

Category:

Method:

Data Sources:

Near

Dapp

Staking

Contract Vulnerabilities

Extended Method:

Reentrancy attack

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Days in Operation:

105

(0.29 Years)

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Stader is a non-custodial smart contract-based staking platform that helps you conveniently discover and access staking solutions. We are building key staking middleware infra for multiple PoS networks for retail crypto users, exchanges and custodians. Staderlabs paused the NearX smart contract due to possible security incident.

Beosin reported that the attacker first deposited 82 $Near to get 79 $Nearx. Then he exploited a reentrancy vulnerability in the nearx.stader-labs.near contract's batch_transaction function.

By repeatedly transferring himself 79 Nearx, the attacker ended up with lots of Nearx. Those Nearx were swapped to get Near.

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