Submitted by TomFrenchBlockchain
Potential DOS on swaps on VaderPool.
BasePool makes use of a validateGas modifier on swaps which checks that the users gas price is below the value returned by _FAST_GAS_ORACLE.
https://github.com/code-423n4/2021-12-vader/blob/fd2787013608438beae361ce1bb6d9ffba466c45/contracts/dex/pool/BasePool.sol#L292
https://github.com/code-423n4/2021-12-vader/blob/fd2787013608438beae361ce1bb6d9ffba466c45/contracts/dex/utils/GasThrottle.sol#L8-L22
Should  _FAST_GAS_ORACLE be compromised to always return zero then all swaps will fail. There is no way to recover from this scenario.
Either remove GasThrottle.sol entirely or allow governance to turn it off as is done in VaderPoolV2.sol
