Circumvention of soft staking restrictions in StakedUSDeV2 through indirect ERC20 token transfers

Lines of code Vulnerability details Summary The StakedUSDeV2 in the Ethena protocol is designed to allow users to stake USDe tokens and earn rewards. The protocol includes roles and restrictions to manage the staking process, such as SOFTRESTRICTEDSTAKERROLE and FULLRESTRICTEDSTAKERROLE. However,...

A user with SOFT_RESTRICTED_STAKER_ROLE can earn yield.

Lines of code Vulnerability details Impact Any user blacklisted with SOFTRESTRICTEDSTAKERROLE role can earn yield by buying stUSDe token from open market and unstake stUSDe for USDe token on the StakedUSDeV2.sol contract. Proof of Concept The unstake function calls the internal withdraw function...