An ERC-4626 inflation attack is a significant security vulnerability in many DeFi tokenized vaults, where an attacker can exploit the mechanics of vault share calculations, donations, and reward synchronization to steal value. This exploit happens when a malicious actor deposits a small amount initially and then manipulates the vault's total asset calculation to receive undue shares, leading to unjust fund withdrawals. To prevent such attacks, mitigation steps such as adjusting share minting logic, initializing vaults securely, and tracking total assets internally are recommended.

13m read timeFrom coinsbench.com
Post cover image
Table of contents
ERC-4626 Inflation Attack and How to Mitigate It.(How a 1 wei Deposit Can Drain Your Vault: Analyzing a Subtle Yet Devastating Smart Contract Exploit)What is ERC4626?Understanding how the ERC-4626 inflation attack worksThe Inflation Attack Step-by-StepHow can the attacker get plenty of shares for almost nothing?Why This WorksAnalyzing the submission for prePO contest on code4renaSummary of the Attack in the SubmissionRelating This to Our Discussion on ERC-4626 Inflation AttacksProposed Mitigation Steps in the SubmissionAnalyzing the submission for GoGoPool contest on code4renaCore VulnerabilityImpactProof of ConceptTechnical DetailsMitigationHow to defend against this attack
1 Comment

Sort: