Contract Owner Can Arbitrarily Change Minting Fees and Interest Rates.md

69 - Contract Owner Can Arbitrarily Change Minting Fees and Interest Rates

The issueFeeRate and interestRate variables can both be changed by the EtherCollateral contract owner after loans have been opened.

As a result, the owner can control fees such as they equal/exceed the collateral for any given loan.

Recommendation:

While "dynamic" interest rates are common, we recommend considering the minting fee ( issueFeeRate ) to be a constant that cannot be changed by the owner.

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Slide Text

• Sigma Prime EtherCollateral Finding 3
• Configuration
• Medium Severity
• Contract Owner
• Change Fees & Interest
• Prevent Changes

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References

• Youtube Reference
• Medium Risk severity finding from Sigma Prime's Audit of Synthetix EtherCollateral

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