Registering non-emoji domains doesn't work

Lines of code Vulnerability details Impact When registering a name containing a non-emoji tile, all the tiles are mapped to emoji tiles before registering a name, so the registered name is invalid. This ruins the protocol, the users can't use it to register the desired names unless they are purel...

KangarooVault.removeCollateral doesn't remove collateral from the EXCHANGE

Lines of code Vulnerability details Impact The owner of the KangarooVault can't receive collateral from EXCHANGE when he wants to remove collateral from the vault. Proof of Concept KangarooVault.removeCollateral doesn't remove collateral from the EXCHANGE. KangarooVault interacts with EXCHANGE, a...

A POSITION WILL BE FULLY LIQUIDATABLE AS SOON AS IT BECOMES LIQUIDATABLE

Lines of code Vulnerability details Impact A specific position can be liquidated if canLiquidate returns true. However, the function logic of maxLiquidatableDebt is going to make it fully liquidatable even if safetyRatio == 1e18. Proof of Concept Let's assume the following setup: collRatio = 1.5e...

No access control in mint function

Lines of code Vulnerability details Impact Canto Bio Protocol: Should allow the association of a single biography to an identity address The mint function does not have any access control mechanism in place, allowing anyone to mint multiple Bio NFTs. This could lead unwanted minting of bios. Tool...

set critical parameters like fee recipient in constrctor.

Lines of code Vulnerability details Impact Loss of fee at certain condition. This can happen, when user call deposit function immediately contracts are deployed. Or when admin forget to update the feeReceient address. There are lot of address that admin has to set once the contract is deployed. S...

CBL Mariner 2.0 Security Update: moby-containerd (CVE-2021-41103)

The version of moby-containerd installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2021-41103 advisory. - containerd is an open source container runtime with an emphasis on simplicity, robustness and...

Division by zero error causes KangarooVault to be DoS with funds locked inside

Lines of code Vulnerability details KangarooVault can be DoS with funds locked in the contract due to a division by zero error in getTokenPrice as it does not handle the scenario where getTotalSupply is zero. Impact Funds will be locked within the KangarooVault as shown in the PoC below and it is...

Multiple Mint of PFP with same NFTID

Lines of code Vulnerability details Impact Malicious user having only one NFT can mint PFP severally. Hence one user with only one NFT but multiple PFP. This isn't the intended implementation. Proof of Concept Is self-understandable. POC not required Recommended Mitigation Steps storing used NFT'...

LiquidityPool.sol#L657 : setFees() could be abused to steal the funds when there is huge transacion is happening.

Lines of code Vulnerability details Impact Set fee functions can be set to any arbitrary value when the transaction is happening. There are more possibility that user could lose most of all of their hard earned funds. Proof of Concept Below functions can be called by autheraised person to fix the...

Fuse function only allows creation of emoji typed characters, and does not allow creation of other font classes like text.

Lines of code Vulnerability details Impact The fuse function only allows creation of emoji typed characters due to this line in the fuse function: bytes memory charAsBytes = Utils.characterToUnicodeBytes0, tileData.characterIndex, characterModifier;, which only accepts a fontClass of 0 as the fir...

Bio Protocol - Cross-Site Scripting via tokenURI SVG image

Lines of code Vulnerability details Impact It is possible to inject bio that is a valid javascript code into generated on-chain SVG image. Attacker might pass following payload as bio: alert1234 which will result in generation of SVG image with the code: text font-family: sans-serif; font-size:...

(Pseudo) Random Number Generator can be gamed, allowing a user to target desirable NFT traits

Lines of code Vulnerability details Impact Detailed description of the impact of this finding. The iteratePRNG function in the Utils.sol library is used in Tray.sol:drawing, which is used to determine the tile data that a user gets when they purchase an NFT in Tray.sol:buy. An attacker can exploi...

Bio Protocol - tokenURI JSON injection

Lines of code Vulnerability details Impact The Bio Protocol allows users to mint Bio NFTs that represent user's bio. Once NFT is minted anyone can trigger tokenURI to retrieve JSON data with the bio and generated svg image. Example JSON content decoded from Base64: "name": "Bio 1", "description":...

Need to check with quantity also in _beforeTokenTransfers

Lines of code Vulnerability details Impact In Tray.sol, we can see tokenId checking in beforTokenTransfers. In the current code, it assumes that quantity is 1. But we need to take care with bunch transfer. Proof of Concept function beforeTokenTransfers address, / from/ address to, uint256...

KangarooVault.sol : anyone can call the processWithdrawalQueue. This would hurt the user when the token price is low

Lines of code Vulnerability details Impact When the price is low, user would get less amount. Proof of Concept processWithdrawalQueue can be called by any one. function processWithdrawalQueueuint256 idCount external nonReentrant for uint256 i = 0; i availableFunds current.returnedAmount =...

sybil attack vulnerability (via Shitcoin)

Lines of code Vulnerability details Impact Attacker can create worthless shitcoin/NFT to mint PFP and as much as possible. Thereby acquiring outrageous and undeserved amount of PFP . Hence attacker is well positioned for further sybil attack/ farming. This is unhealthy to the contract and its...

Incorrect use of the && Operator will allow anyone to fuse a new Namespace NFT

Lines of code Vulnerability details Impact Any caller can easily mint NFT if they provide a valid list of characters with the appropriate trays, the problem with this code is in this check if trayOwner != msg.sender && tray.getApprovedtrayID != msg.sender && !tray.isApprovedForAlltrayOwner,...

Unlimited minting of Canto Bio NFT

Lines of code Vulnerability details Impact There is no max limit on the number of Bio NFT that can be minted by a user. This allows an attacker to mint himself any amount of Bio NFT he want. Proof of Concept function testMint public string memory bio = "TEST BIO"; vm.prankalice; for uint i = 0; i...

Hedging during liquidation is incorrect

Lines of code Vulnerability details Impact Hedging will not work as expected, and LiquidityPool will lose funds without expectation. Proof of concept 1. When a short position is liquidated in contract Exchange, function liquidate will be triggered. It will burn the power perp tokens and reduce th...

Implementation error in Namespace.fuse() leads to a wrong unicode representation

Lines of code Vulnerability details Impact The font class of a tile will be always considered as 0 emoji when a user registers a name. Proof of Concept To register a name, fuse is used taking as input the data of the characters. The name to register is a string created by converting the character...