Detect and mitigate msg.value reuse in Solidity loops.
npx skills add https://github.com/Apegurus/solidity-argus --skill msgvalue-loop
Please help me install this Agent Skill. Skill: msgvalue-loop Source: https://github.com/Apegurus/solidity-argus/tree/main/skills/vulnerability-patterns/msgvalue-loop Command: npx skills add https://github.com/Apegurus/solidity-argus --skill msgvalue-loop
This Skill identifies and helps prevent a critical vulnerability in Solidity smart contracts where msg.value is reused within loops or functions called multiple times in a single external transaction, potentially allowing attackers to exploit the contract by paying only once for multiple operations.
msg.value in iterative contract logic.msg.value inside for/while loops or multicall functions.Analyze the attached contract 'Vault.sol' for any instances where msg.value is referenced inside a loop.
High-intent search queries and answers about installing and using this skill.
The msg.value reuse vulnerability in Solidity occurs when `msg.value` is referenced inside loops or repeatedly called functions, allowing attackers to pay once for multiple operations. Remediation requires ensuring correct Ether handling per iterative operation.
To detect msg.value used inside a for or while loop in Solidity, analyze the contract code for patterns where `msg.value` is referenced within iterative constructs or functions invoked repeatedly in a single external call. This identifies unsafe Ether handling logic.
Prevent msg.value reuse vulnerabilities in DeFi batch operations by scanning smart contracts for anti-patterns where `msg.value` is passed through multicall functions. Implement remediation strategies to ensure correct Ether handling per operation before deployment.
Yes, this Skill can scan your smart contract for msg.value multicall anti-patterns by analyzing the attached Solidity code for instances where `msg.value` is referenced inside iterative constructs or functions called multiple times within a single external transaction.
The limitation of scanning for msg.value reuse in loops is that it strictly targets `msg.value` references within `for` and `while` loops or repeated function calls. It focuses on this specific anti-pattern and may not detect other unrelated smart contract security vulnerabilities.
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