Here are three specific DeFi smart contract vulnerabilities suitable for inclusion in a professional security audit report. Each entry includes the vulnerability name, technical description, impact, and remediation advice.
1. Reentrancy Attack (CWE-693)
Description:
A reentrancy vulnerability occurs when a smart contract calls an external contract (e.g., a user-controlled wallet or another DeFi protocol) before updating its internal state (such as balances or allowances). If the external contract contains malicious logic, it can recursively call back into the vulnerable function before the state update is complete, allowing the attacker to drain funds multiple times using the same initial balance check.
Typical Scenario:
In a withdraw() function:
- The contract checks if the user’s balance is sufficient.
- It sends ETH to the user via
address.transfer()orcall{value: amount}(""). - Vulnerability: The
Top comments (0)