The Standard

Summary

The increasePosition function in the LiquidationPool contract lacks checks to prevent potential integer overflow when adding values to positions[msg.sender].TST and positions[msg.sender].EUROs. This vulnerability may pose a risk of unintended behavior and compromise the integrity of user balances.

Vulnerability Details

Code Snippet:

Impact

The absence of checks for integer overflow in the increasePosition function could lead to unexpected behavior and compromise the accuracy of user balances, potentially resulting in integer overflow vulnerabilities.

Tools Used

Manual Code Review

Recommendations

To address the potential integer overflow vulnerability in the increasePosition function of the LiquidationPool contract, the following recommendations are provided:

1. Implement Checks to Prevent Integer Overflow:

   • Include proper checks to ensure that adding values to positions[msg.sender].TST and positions[msg.sender].EUROs does not result in integer overflow.

   require(positions[msg.sender].TST + _tstVal >= positions[msg.sender].TST, "integer overflow");

   require(positions[msg.sender].EUROs + _eurosVal >= positions[msg.sender].EUROs, "integer overflow");

2. Conduct Comprehensive Testing:

   • Conduct thorough testing, including unit tests and scenario-based testing, to verify the effectiveness of the implemented checks in preventing integer overflow.

3. Leverage SafeMath Library:

   • Consider using the SafeMath library or similar mechanisms to perform arithmetic operations with additional safety checks, further enhancing the security of the contract.