Check-Effect-Interact Violations and possible Reentrancy

Lines of code Vulnerability details Impact Some contracts functions make external calls and do not follow the CEI pattern thereby allowing the function to possibly be re-entered. Proof of Concept 1. ArtGobblers.mintFromGoo - , numMintedFromGoo and currentNonLegendaryId state variables updated aft...

External Calls inside loops of _multiRedeem & redeem function may cause Denial of Service

Lines of code Vulnerability details Impact Calls inside loops that may address DoS. Proof of Concept Calls to external contracts inside a loop are dangerous especially if the loop index can be user-controlled because it could lead to DoS if one of the calls reverts or execution runs out of gas...

Calls inside loops that may address DoS/Griefing

Lines of code Vulnerability details Calls inside loops that may address DoS/Griefing Description Calls to external contracts inside a loop are dangerous especially if the loop index can be user-controlled because it could lead to DoS if one of the calls reverts or execution runs out of gas...

DOS(Denial Of Service).External calls can fail accidentally or deliberately, which can cause a DoS condition in the contract.

Lines of code Vulnerability details Impact --Check: calls-loop --Severity: Medium --Confidence: Medium External calls can fail accidentally or deliberately, which can cause a DoS condition in the contract. There are two instances where this can occur. Proof of Concept -- --ConsenSys Smart...

Unchecked return value of transfer() and transferFrom()

Lines of code Vulnerability details Impact There are multiple external calls to IERC20.transfer and IERC20.transfer in contracts that suppose to transfer out tokens from/to the system. However, there are tokens like USDT that don't return any return value in their implementation of the transfer...

Reentrancy vulnerability due to _distributePayoutsOf

Lines of code Vulnerability details The function distributePayoutsOf has reentrancy vulnerability which is being called by the external function distributePayoutsOf There are external calls in this function along with calls sending ETH Impact The contract JBPayoutRedemptionPaymentTerminal inherit...

Upgraded Q -> H from 215 [1656255310294]

Judge has assessed an item in Issue 215 as High risk. The relevant finding follows: L-09 wfCashERC4626 contract does not conform to EIP4626 Description The wfCashERC4626 contract implements the EIP4626 standard EIP-4626: Tokenized Vault Standard. However, according to EIP4626, the below-mentioned...

Reentrancy vulnerabilities

Lines of code Vulnerability details Impact Reentrancy attacks can allow malicious actors to take over the control flow, and make...

DoS with block gas limit--External calls inside a loop might lead to a denial-of-service attack.

Lines of code Vulnerability details Impact --Check: calls-loop --Severity: Medium --Confidence: Medium External calls can fail accidentally or deliberately, which can cause a DoS condition in the contract. Proof of Concept -- --ConsenSys Smart Contract Best Practices -- -- Tools Used...

Autodesk Fusion360 代码问题漏洞

Autodesk Fusion360 is a 3D CAD drawing tool from Autodesk, Inc. A code issue vulnerability exists in Autodesk Fusion360 version 2.0.12887, which arises from an application that does not adequately validate user-supplied XML input during insertion of an SVG when parsing a specially crafted SVG fil...

reentrancy by _harvest() and _deposit() code in the middle of claimBribesFromHiddenHand() external calls to tokens and change balances of AURA token so claimBribesFromHiddenHand() make wrong transfers and fund would be lost

Lines of code Vulnerability details Impact Function claimBribesFromHiddenHand makes some external calls to token lists which fetches from hiddenHandDistributor.rewards if AURA was on of those tokens and also one of those tokens were malicious or made some external call then it's possible to reent...

PYSEC-2022-43053

Vyper is a Pythonic Smart Contract Language for the ethereum virtual machine. In versions prior to 0.3.4 when a calling an external contract with no return value, the contract address including side effects could be evaluated twice. This may result in incorrect outcomes for contracts. This issue...

PYSEC-2022-43053

Vyper is a Pythonic Smart Contract Language for the ethereum virtual machine. In versions prior to 0.3.4 when a calling an external contract with no return value, the contract address including side effects could be evaluated twice. This may result in incorrect outcomes for contracts. This issue...

Reentrancy attack

Lines of code Vulnerability details Impact High impact. Reentrancy Attack may lead in lost of funds. Proof of Concept Reentrancy in RubiconMarket.matchouint256,ERC20,uint256,ERC20,uint256,bool c ontracts/RubiconMarket.sol1049-1108: External calls: - buybestmakerid,minmpayamt,t...

Integer bounds error in Vyper

Impact in the following code, the return of .returnsint128 is not validated to fall within the bounds of int128. as of v0.3.0, .returnsint128 is validated in simple expressions, but not complex expressions. vyper interface iface: def returnsint128 - int128: view def returnsBytes33 - Bytes33: view...

Use of external calls without reentrancy modifers

Lines of code Vulnerability details Impact In TWAPDelegator.sol functions like updateDelegatee and createDelegation have external calls without the use of reentrancy modifiers. These modifiers can serve as a strong security tool to prevent attacks when using external calls. Proof of Concept Tools...

Privilege Escalation

pear/cryptgpg is vulnerable to privilege escalation. The vulnerability exists in GPG.php file because there are no end-of-option markers before operation arguments allowing remote attackers to parse additional options during external calls to the library...

Use of IERC20.transfer() instead of SafeERC20.safeTransfer()

Lines of code Vulnerability details Impact There are multiple external calls to IERC20.transfer that suppose to transfer out tokens from the system. However, there are tokens like USDT that don't return any return value in their implementation of the transfer function, so calling IERC20.transfer ...

OpenZeppelin 安全漏洞

OpenZeppelin is a software application. A standard for secure blockchain applications. A security vulnerability exists in OpenZeppelin =v4.4.0 that stems from initializer functions that are called separately from contract creation the most notable example being minimal proxies and can be re-enter...

Unsafe mint is a reentrancy door

Handle pedroais Vulnerability details Impact Dangerous external calls in the middle of various state changes could cause reentrancy issues since there is no reentrancy guard in any functions. Proof of Concept When users call the deposit or sponsor functions a deposit NFT is minted. The safeMint...