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JERRY [SAFEJERRY] Token

About JERRY

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Token 7 months

Website

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Description

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Social

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Laser Scorebeta Last Audit: 30 November 2021

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Token seems to be anonymous. As long as we are unable to find website score is limited.


Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)

JERRY.addLiquidity(uint256,uint256) (#2209-2221) sends eth to arbitrary user
Dangerous calls:
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#2212-2219)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in DividendPayingToken._withdrawDividendOfUser(address) (#1412-1428):
External calls:
- (success) = user.call{gas: 3000,value: _withdrawableDividend}() (#1417)
State variables written after the call(s):
- withdrawnDividends[user] = withdrawnDividends[user].sub(_withdrawableDividend) (#1420)
Apply the check-effects-interactions pattern.

Additional information: link

SafeToken.withdraw(address,uint256) (#1730-1733) ignores return value by IERC20(_token).transfer(safeManager,_amount) (#1732)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

Additional information: link

JERRY.bots (#1803) is never initialized. It is used in:
- JERRY._transfer(address,address,uint256) (#2068-2139)
Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.

Additional information: link


Combination 1: Reentrancy vulnerabilities + Functions that send Ether to arbitraty destination. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.


Combination 2: Unchecked transfer + Functions that send Ether to arbitraty destination. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.


Combination 3: Reentrancy vulnerabilities + Unchecked transfer vulnerability. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.

JERRY.swapAndLiquify(uint256) (#2141-2179) performs a multiplication on the result of a division:
-BuyBackAmount = deltaBalance.sub(bnbToAddLiquidityWith).div(totalFees.sub(liquidityFee)).mul(BuyBackFee) (#2168)
Consider ordering multiplication before division.

Additional information: link

JERRY._transfer(address,address,uint256).lastProcessedIndex (#2130) is a local variable never initialized
Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.

Additional information: link

JERRY.addLiquidity(uint256,uint256) (#2209-2221) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#2212-2219)
Ensure that all the return values of the function calls are used.

Additional information: link

DividendPayingToken.constructor(string,string)._symbol (#1369) shadows:
- ERC20._symbol (#832) (state variable)
Rename the local variables that shadow another component.

Additional information: link

JERRY.setExcludeFromMaxTx(uint256) (#2064-2066) should emit an event for:
- swapTokensAtAmount = value (#2065)
Emit an event for critical parameter changes.

Additional information: link

JERRY.setMarWallet(address).newWall (#1866) lacks a zero-check on :
- marketingWallet = address(newWall) (#1867)
Check that the address is not zero.

Additional information: link

Variable 'JERRY._transfer(address,address,uint256).lastProcessedIndex (#2130)' in JERRY._transfer(address,address,uint256) (#2068-2139) potentially used before declaration: ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (#2131)
Move all variable declarations prior to any usage of the variable, and ensure that reaching a variable declaration does not depend on some conditional if it is used unconditionally.

Additional information: link

Reentrancy in JERRYDividendTracker.processAccount(address,bool) (#1706-1716):
External calls:
- amount = _withdrawDividendOfUser(account) (#1707)
- (success) = user.call{gas: 3000,value: _withdrawableDividend}() (#1417)
State variables written after the call(s):
- lastClaimTimes[account] = block.timestamp (#1710)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in JERRY.swapAndLiquify(uint256) (#2141-2179):
External calls:
- swapTokensForBnb(toSwap,address(this)) (#2154)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,_to,block.timestamp) (#2194-2200)
- addLiquidity(tokensToAddLiquidityWith,bnbToAddLiquidityWith) (#2163)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#2212-2219)
- (success) = address(dividendTracker).call{value: dividends}() (#2172)
External calls sending eth:
- addLiquidity(tokensToAddLiquidityWith,bnbToAddLiquidityWith) (#2163)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#2212-2219)
- marketingWallet.transfer(marketingAmount) (#2166)
- BuyBackWallet.transfer(BuyBackAmount) (#2169)
- (success) = address(dividendTracker).call{value: dividends}() (#2172)
Event emitted after the call(s):
- SendDividends(toSwap - tokensToAddLiquidityWith,dividends) (#2175)
- SwapAndLiquify(tokensToAddLiquidityWith,deltaBalance) (#2178)
Apply the check-effects-interactions pattern.

Additional information: link

JERRYDividendTracker.canAutoClaim(uint256) (#1634-1640) uses timestamp for comparisons
Dangerous comparisons:
- lastClaimTime > block.timestamp (#1635)
- block.timestamp.sub(lastClaimTime) >= claimWait (#1639)
Avoid relying on block.timestamp.

Additional information: link

SignedSafeMath.mul(int256,int256) (#173-175) is never used and should be removed
Remove unused functions.

Additional information: link

solc-0.8.0 is not recommended for deployment
Deploy with any of the following Solidity versions: 0.5.16 - 0.5.17, 0.6.11 - 0.6.12, 0.7.5 - 0.7.6 Use a simple pragma version that allows any of these versions. Consider using the latest version of Solidity for testing.

Additional information: link

Low level call in JERRY.swapAndLiquify(uint256) (#2141-2179):
- (success) = address(dividendTracker).call{value: dividends}() (#2172)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Variable JERRY.BuyBackWallet (#1794) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Reentrancy in JERRY.swapAndLiquify(uint256) (#2141-2179):
External calls:
- marketingWallet.transfer(marketingAmount) (#2166)
- BuyBackWallet.transfer(BuyBackAmount) (#2169)
External calls sending eth:
- addLiquidity(tokensToAddLiquidityWith,bnbToAddLiquidityWith) (#2163)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#2212-2219)
- marketingWallet.transfer(marketingAmount) (#2166)
- BuyBackWallet.transfer(BuyBackAmount) (#2169)
- (success) = address(dividendTracker).call{value: dividends}() (#2172)
Event emitted after the call(s):
- SendDividends(toSwap - tokensToAddLiquidityWith,dividends) (#2175)
- SwapAndLiquify(tokensToAddLiquidityWith,deltaBalance) (#2178)
Apply the check-effects-interactions pattern.

Additional information: link

Variable JERRY.BNBRewardssellFee (#1786) is too similar to JERRY.setExtraFeeOnSell(uint256,uint256,uint256)._bnbRewardsellFee (#1855)
Prevent variables from having similar names.

Additional information: link

JERRY.slitherConstructorVariables() (#1766-2224) uses literals with too many digits:
- gasForProcessing = 300000 (#1797)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

setExcludeFromMaxTx(uint256) should be declared external:
- JERRY.setExcludeFromMaxTx(uint256) (#2064-2066)
Use the external attribute for functions never called from the contract.

Additional information: link

Holders:


Number of Binance Smart Chain (BSC) token holders is less than 100. Token is either dead or inactive. Ignore for presale.


Average PancakeSwap trading volume, liqudity, number of swaps are extremely low. Token seems to be dead.


Token is deployed only at one blockchain


Token has only one trading pair


Unable to find PancakeSwap trading pair to compute liquidity.


Unable to find PancakeSwap trading pair to compute volume.


Unable to find PancakeSwap trading pair to compute number of swaps.


Unable to find Telegram and Twitter accounts


Unable to find website, listings and other project-related information


Young tokens have high risks of price dump / death


Token has no active CoinGecko listing / rank


Token has no active CoinMarketCap listing / rank

Price for JERRY