lowLogic errorEVM-Solidity
Oracle-free AMM invariant rounding allows slow drain
- Payout
- $9k
- Protocol
- Stableswap Pool
- Disclosed
- Apr 9, 2024
- Source
- hats
A directional rounding flaw in the Newton-Raphson solver for a StableSwap invariant enabled subtle value extraction during token exchanges. When computing invariant values and target balances, both routines rounded down, yielding an extra wei of token output t …
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References
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