Some tokens may revert when zero value transfers are made

Lines of code 356, 371, 145, 272, 252, 116, 445, 374, 506, 488https://github.com/Tapioca-DAO/tap-token-audit/blob/59749be5bc2286f0bdbf59d7ddc258ddafd49a9f/contracts/options/TapiocaOptionBroker...

Disruptions at 70% of Iran’s Gas Stations Blamed on Cyberattack

By Deeba Ahmed Cyberwar against critical Iranian infrastructure continues. This is a post from HackRead.com Read the original post: Disruptions at 70% of Irans Gas Stations Blamed on Cyberattack...

Some tokens may revert when zero value transfers are made

Lines of code 356, 371, 145, 272, 252, 116, 445, 374, 506, 488https://github.com/Tapioca-DAO/tap-token-audit/blob/59749be5bc2286f0bdbf59d7ddc258ddafd49a9f/contracts/options/TapiocaOptionBroker...

Potential Gas Inefficiency due to Unnecessary abi.encode Usage

Lines of code Vulnerability details Impact The function unnecessarily uses abi.encode to convert a uint256 to bytes32, incurring additional gas costs. This doesn't affect correctness but may lead to suboptimal gas usage. Proof of Concept By modifying the fetchInteractionId function to directly ca...

Potential Gas and Overflow Issues with Decimal Shift Left in _convertDecimals Function

Lines of code Vulnerability details Impact The exponentiation operation in the decimal shift left scenario can lead to high gas consumption and potential integer overflow. The gas cost and risk of overflow increase with the value of the exponent, which could make the function expensive or even...

Some tokens may revert when zero value transfers are made

Lines of code 356, 371, 145, 272, 252, 116, 445, 374, 506, 488https://github.com/Tapioca-DAO/tap-token-audit/blob/59749be5bc2286f0bdbf59d7ddc258ddafd49a9f/contracts/options/TapiocaOptionBroker...

devcooilandgas.com Improper Access Control vulnerability OBB-3797245

Following the coordinated and responsible vulnerability disclosure guidelines of the ISO 29147 standard, Open Bug Bounty has: a. verified the vulnerability and confirmed its existence; b. notified the website operator about its existence. Technical details of the vulnerability are currently hidde...

AuctionDemo opens itself several DoS attack vectors

Lines of code Vulnerability details Impact Detailed description of the impact of this finding. Proof of Concept The auctionDemo.auctionInfoData map holds important info on auctions, and hold this info per tokenId. Needless to say, for many auctions that may become popular and/or long running, the...

No Chainlink error handling in case of ethereums gas prices increasing or subscription running out of Link.

Lines of code Vulnerability details Impact Any collections making use of the ChainLink VRF2 randomizer could potentially get 0x0 hashes for their nfts. Due to uint32 public callbackGasLimit = 40000; being hardcoded, any gas fluctuations on Ethereum main net, could potentially not be enough for th...

Bid's array can be overloaded with dust bids to break AuctionDemo funcionality.

Lines of code Vulnerability details Description Bids to the auction can be created using any msg.value via participateToAuction method and are stored in an array within the mapping auctionInfoData. However, all important methods claimAuction, returnHighestBid, returnHighestBidder,...

Missing gas fee limit

Lines of code Vulnerability details The use of .callvalue: balance"" does not limit the gas sent along with the Ether, potentially allowing all gas in the transaction to be used by the receiver. // Set a specific gas limit for the call if applicable uint256 gasLimit = someGasLimit; // Define...

High possibility of DOS

Lines of code Vulnerability details Impact In the claimAuction function there is a high possibility of DOS where the auction winner is unable to claim the NFT due to high gas cost or not enough gas, this is due to the functions having three loops on same array of all bids, they are in the...

claimAuction can be reverted by any bidder, locking all funds and the prize.

Lines of code Vulnerability details Description claimAuction is used to redeem the auction's ERC-721 and refund all bidders that didn't win the auction. In this process, callbacks are sent to every single bidder via low-level calls that triggers fallbacks/receives and ERC721.safeTransferFrom. So,...

cancelBid() and cancelAllBids() functions are incorrectly implemented, resulting in partial/complete DoS-ing of bid cancelling functionality.

Lines of code Vulnerability details Impact cancelBid and cancelAllBids functions are incorrectly implemented, resulting in partial/complete DoS-ing of bid cancelling functionality. bidder could lose funds when they change their mind and want to cancel their bid, imagine they were the top bidder a...

Missing deadline checks

Lines of code Vulnerability details Consider addings implementation to handle the expiration of the transaction for additional security. To implement a transaction expiration mechanism in the emergencyWithdraw add a timestamp check to ensure that the transaction is executed only within a certain...

payable.transfer() call will result in loss of unused Ether

Lines of code Vulnerability details Impact batchContribute function carries out funding and transfer in batches by using the payable.transfer call. This is unsafe as transfer has hard coded gas budget and can fail when the user is a smart contract. This way programmatical usage of batchContribute...

Send Ether will call instead of transfer

Lines of code Vulnerability details Impact transfer automatically forwards exactly 2300 gas to the receiving contract. This limitation can restrict smart contract's ability to interact with other contracts that require more gas for their operations like receiving eth, leading to failed transactio...

Unbounded iteration over all index

Lines of code Vulnerability details Impact The transactions could fail if the array get too big and the transaction would consume more gas than the block limit. This will then result in a denial of service for the desired functionality and break core functionality. Proof of Concept Functions like...

wrong check in batchContributeFor always leads to revert and loose of ETH

Lines of code Vulnerability details Bug Description The batchContributeFor function allows a caller to contribute to a number of recipients or tokenIds on behalf of the owner of tokenIds. This can happen by having a for loop which calls contribute each time for a specific address. However, in the...

Upgraded Q -> 2 from #203 [1699029806392]

Judge has assessed an item in Issue 203 as 2 risk. The relevant finding follows: L-1 Function updateScores spends all gas and reverts if a user has score updated Summary Function updateScores incorrectly handles case when a user’s score is already updated. Vulnerability Details There is a for loo...