There is no Support For The Trading of Cryptopunks

[code423n4]

Lines of code

https://github.com/PartyDAO/party-contracts-c4/blob/3896577b8f0fa16cba129dc2867aba786b730c1b/contracts/crowdfund/BuyCrowdfundBase.sol#L137

Vulnerability details

Impact

Cryptopunks are at the core of the NFT ecosystem. As one of the first NFTs, it embodies the culture of NFT marketplaces. By not supporting the trading of cryptopunks, Foundation is at a severe disadvantage when compared to other marketplaces. Cryptopunks have their own internal marketplace which allows users to trade their NFTs to other users. As such, cryptopunks does not adhere to the ERC721 standard, it will always fail when the protocol attempts to trade them.

Proof of concept

Here is an example implementation of what it might look like to integrate cryptopunks into the Foundation protocol.

Tools Used

Manual review

Recommended Mitigation Steps

Consider designing a wrapper contract for cryptopunks to facilitate standard ERC721 transfers. The logic should be abstracted away from the user such that their user experience is not impacted.

[merklejerk]

Don't consider this a vulnerability. The protocol is only designed to work with ERC721s. The FE will only suggest ERC721s to crowdfund on.

[HardlyDifficult]

At least change the name of the protocol when copy pasting another report 🙏

This is a NC feature suggestion, converting into a QA report for the warden.

[HardlyDifficult]

Merging with #249