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Dev finds major governance bug in SushiSwap, but no threat to the project yet

Dev finds major governance bug in SushiSwap, but no threat to the project yet

SushiSwap seems to be weak from a sneaky bug that might multiply somebody’s governance energy with out having to amass new tokens.

Reported by developer Jong Seok Park on Sept. 7, the bug will be described as a governance double-spend.

In essence, SushiSwap governance lets tokenholders delegate their voting energy to a different entity. Nonetheless, if that token holder then transfers the tokens to another person, the delegatee nonetheless maintains their governance energy. The second tokenholder can now delegate tokens as soon as once more, multiplying the delegatee’s energy by as a lot as vital. The bug is that the token switch doesn’t reset delegation parameters, and that is possible the results of aggregating codebases from totally different initiatives.

SushiSwap’s governance contracts are largely a fork of Yam governance, themselves a fork of Compound. Trying on the Github supply code of SushiSwap, nonetheless, it seems that the token’s sensible contract solely modified the “mint” perform from the usual implementation of ERC-20 contracts by OpenZeppelin. Yam, then again, used a particular implementation of the usual that has a “moveDelegates” perform referred to as upon transferring.

In a dialog with Cointelegraph, FTX CEO and now lead for SushiSwap Sam Bankman-Fried confirmed the existence of the bug. He famous that “It doesn’t pose a direct drawback for Sushi” as governance hasn’t but been activated.

Catching the bug earlier than dwell launch signifies that the staff can now work on options to repair it. Bankman-Fried believes that the difficulty must be fixable with out having emigrate the mission to new contracts, however the staff is “nonetheless wanting into it.”

It’s attention-grabbing to notice that SushiSwap was rapidly reviewed and audited by a number of corporations because the mission blew up in reputation. Whereas one of many points entails the identical “moveDelegates” perform at play right here, it seems to be a unique kind of bug. It wouldn’t be the primary time that audits fail to catch some points, highlighting the necessity for all the improvement group to pitch in to maintain DeFi sensible contracts safe.

SushiSwap itself is at present reeling from the aftermath of its nameless founder leaping ship with a “devfund” in SUSHI tokens price $27 million in some unspecified time in the future.

The meant liquidity migration from Uniswap remains to be set to proceed with new migration contracts, however the prior choice from Chef Nomi was canceled.

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