safeConcurTransfer can cause loss of funds

Lines of code Vulnerability details Impact All calculations are rounded down, since a lack of tokens in the contracts cannot be rounding errors' fault. So the function is redundant. On the other hand, if the contract is undersupplied with Concur tokens, this will cause depositors to be sent less...

Security Bulletin: Apache Log4j vulnerability impacts IBM Sterling Global Mailbox (CVE-2021-45046)

Summary IBM Sterling Global Mailbox is vulnerable to arbitrary code execution due to Apache Log4j CVE-2021-45046 and is used for logging. Mitigation steps detailed below. Vulnerability Details CVEID: CVE-2021-45046 DESCRIPTION: Apache Log4j could result in remote code execution, caused by an...

Owner can steal input tokens

Lines of code Vulnerability details Impact Owner is in full control over the saleRecipient address. When a buy transaction enters the mempool, an owner can frontrun the buy with a transaction that calls setTokenOutPrice and sets the price to a very high value, effectively making bought tokens clo...

Possible rug #3

Lines of code Vulnerability details Impact Tokens can be consumed by the contract and sent to the saleRecipient address without any guarantee that sale tokens will ever be deposited in the sale contract. The sold tokens are only required in the finalize function, which clearly does not provide an...

tokenOut is only required on finalize

Lines of code Vulnerability details Impact I thought of a potential rug pull from the owner: when users buy tokenOut, it is not required that the contract has already escrowed enough tokenOut. It is only required when finalizing the sale: require tokenOut.balanceOfaddressthis = totalTokenOutBough...

Users should be allowed to control accepted tokenOutPrice

Lines of code Vulnerability details Impact Users should be able to control the accepted price. The owner can anytime invoke function setTokenOutPrice and thus change the ratio of token in/out. Users have to trust the owner not to front-run them and make the tokens more expensive. Recommended...

Option to have setTokenOutPrice, will impact Token sale and user behavior

Lines of code Vulnerability details There is no loss of funds, but there is a possibility that the current code will dictate user behavior which is not intended. Hence setting the risk rating as medium. Impact There is an option to setTokenOutPrice by the owner. There can be two cases. case-1. th...

No guarantee sale organizer will fulfil their end of the deal

Lines of code Vulnerability details Impact Sale participants will only be able to claim their CTDL tokens once the sale is finalized. However, there is no guarantee that it ever will be, because: Sale finalisation can only be performed by the owner The owner is able to change the sale parameters...

Sale operator may frontrun purchases in order to modify the price arbitrarily

Lines of code Vulnerability details Impact Buyer's cannot set a minimum amount of CTDL that they will expect so BadgerDAO can force them to receive a smaller amount than expected. Proof of Concept The buy function only allows the buyer to specify an amount of tokenIn to send to the contract and...

Drain of funds by reentrancy in OpenLevV1.addMarket

Handle 0x1f8b Vulnerability details Impact It's possible to create a market, create trades, create a new market with different values, and preserve the previous trades pointing to the new tokens. Proof of Concept The method addMarket inside the contract OpenLevV1Lib increase the marketId numPairs...

Checks missing while adding rewards

Handle csanuragjain Vulnerability details Impact Reward amount higher than contract reward balance can bring instability in the contract Proof of Concept 1. In FarmingPools.sol contract check notifyRewardAmounts function 2. Observe there is no check to see if added reward is higher than contract...

MAX_SHORTFALL_WITHDRAW limit on BTP extraction is not enforced

Handle gellej Vulnerability details Impact The function extractTokensForCollateralShortfall allows the owner of the sNote contract to withdraw up to 50% of the total amount of BPT. Presumably, this 50% limit is in place to prevent the owner from "rug-pulling" the sNote holders or at least to give...

_mintFromAssets: no slippage check

Handle cmichel Vulnerability details The sNOTE.mintFromAssets function uses tokens to provide single-sided liquidity. In Balancer this is basically a combination of a swap to balanced amounts followed by providing balanced liquidity. Note that no slippage checks are used as mintOutputAmount is se...

Lack of access control in the parameterize function of proposal contracts

Handle shw Vulnerability details Impact Most of the proposal contracts have a parameterize function for setting the proposal parameters, and these functions are protected only by the notCurrent modifier. When the proposal is proposed through a lodgeProposal transaction, an attacker can front-run...

makeProposal can be front run with an arbitrary proposal modifications, enabling griefing attack

Handle hyh Vulnerability details Impact Griefing attack is possible for makeProposal as proposal details can be modified by anyone. Proposal setters have no access controls, requiring only that proposal be not current, so when makeProposal is executed after the preparation phase an attacker can...

All the scxMinted is at risk of being burnt.(Limbo.sol)

Handle Hawkeye Vulnerability details Impact If one of the variables that calculate adjustedRectangle is a zero value,it will impair the calculation of excessSCX which would equal to all of the scxMinted on line 219.Nothing will be deducted from scxMinted on line 229 since adjustedRectangle =0...

Use of deprecated Chainlink API

Handle defsec Vulnerability details Impact The contract uses Chainlink’s deprecated API latestAnswer. Such functions might suddenly stop working if Chainlink stopped supporting deprecated APIs. Impact: Deprecated API stops working. Prices cannot be obtained. Protocol stops and contracts have to b...

Burning a User's Tokens for a Flash Proposal will not Deduct Their Balance

Handle kirk-baird Vulnerability details Impact The proposal to burn a user's tokens for a flash governance proposal does not result in the user losing any funds and may in fact unlock their funds sooner. Proof of Concept The function burnFlashGovernanceAsset will simply overwrite the user's state...

You can flip governance decisions without extending vote duration

Handle camden Vulnerability details Impact The impact here is that a user can, right at the end of the voting period, flip the decision without triggering the logic to extend the vote duration. The user doesn't even have to be very sophisticated: they can just send one vote in one transaction to ...

Use of deprecated Chainlink latestAnswer()

Handle sirhashalot Vulnerability details Impact Chainlink's documentation listed the latestAnswer function as deprecated. This function doesn't revert if no answer is available but returns 0, and the return value of latestanswer is not checked in the Notional code. In fact, Chainlink removed thei...