Summary

Transactions might be temporarily doxxed cause of method used to calculate the expected execution fee for a trasaction.

Vulnerability Details

In GMX contracts, the execution fee is expected to be a floating variable calculated on the fly when a transaction is processed, while on the vault contract, execution fee is a fixed unchangeable value. The Vault should rather call the gmx contract cause the chian itself might become more expensive than envisaged by the vaults and thus the price for fees get higher than the minimum value in the vault, this will lead to an increase in expected fees on the gmx contract, but not on the vault, which will lead to a dos.

Impact

Dox transactions on the vault contract.

Tools Used

Manual.

Recommendations

Use the same mechanism to calculate fees as used in the gmx contract or call the gmx contract directly for fees.