Don'T Hash Me like That: Exposing and Mitigating Hash-Induced Unfairness in Local Differential Privacy

Local differential privacy LDP has become a widely accepted framework for privacy-preserving data collection. In LDP, many protocols rely on hash functions to implement user-side encoding and perturbation. However, the security and privacy implications of hash function selection have not been...

Unwrap Fee Rounding Down: Revenue Loss, User Unfairness, and Reduced Confidence

Lines of code Vulnerability details Impact The issue with the unwrap fee rounding down can have several detrimental impacts on the Ocean protocol: 1. Revenue Loss: Due to rounding down, the contract loses out on potential unwrap fees, particularly for smaller unwrap amounts. This can significantl...

Upgraded Q -> 2 from #491 [1701115520323]

Judge has assessed an item in Issue 491 as 2 risk. The relevant finding follows: L-03 While StakedUSDeV2.cooldownDuration is changed from non-zero to zero, stakers should be able to call StakedUSDeV2.unstake to withdraw assets regardless of userCooldown.cooldownEnd File: While...

The 'Nouns Fork' is considered unfair towards contributors, given they are not awarded any new tokens.

Lines of code Vulnerability details Impact The 'Nouns Fork' is considered unfair towards contributors, given they are not awarded any new tokens. Proof of Concept The Nouns Fork mechanism allows members of the minority in the Nouns DAO to exit to a new forked Nouns DAO, but the current approach m...

The design flaws have resulted in unfairness in the protocol.

Lines of code Vulnerability details Impact Ordinary traders are not aware that the contract does not have sufficient ajna tokens when receiving rewards, resulting in partial loss of ajna. Smart traders will check the contract token balance before claiming rewards, which leads to unfairness. Proof...

The raffle could be slightly unfair as the owner of NFT ID which is closer to drawingTokenStartId could have more chance to win

Lines of code Vulnerability details Impact The raffle could be slightly unfair as the owner of NFT ID which is closer to drawingTokenStartId could have more chance to win. Proof of Concept As written in , "We want to raffle away a single NFT token based off of another NFT collection or drawingTok...

Vaults are in liquidation forever instead of just for auction length

Handle cmichel Vulnerability details The witch can Witch.grab vaults and the vaultOwnersvaultId field is set to the original owner. The original vault owner is only restored if all debt balances.art is repaid by the liquidation engine. if balances.art - art == 0 // If there is no debt left, retur...