Winner of auction status is not set to false after claim so eligible for refund

Lines of code Vulnerability details Impact Bidders funds will get stuck Proof of Concept After Auction winner claims token, his/her status is not set to false so he is eligible for a refund because the refund logic checks for all indexes with status set to true, which not supposed to be so. So th...

In some cases the crowdfund cant be finalized because the minContribution amount check is after the amount is reduced

Lines of code Vulnerability details Because of a finding in the previous contest, the minContribution check is done after the amount is potentially reduced if refunding excess contribution. However this can be a problem if the maxTotalContributions - minTotalContributions is smaller than the...

LPDA refund logic is broken, meaning buyers always get lowest price sale

Lines of code Vulnerability details Impact The protocol intends the LPDA to refunds buyers with the difference between the price they paid and the last sale price Once the sale has ended, the users must call refund to get their Ether refunds based on their purchase price and lowest sale price 99:...

Potential scenario where an attacker can steal a user's gas refund

Lines of code Vulnerability details Impact Anybody is allowed to add gas for a specific tx. I was trying to figure out whether the following scenarios are possible: 1. Alice sends a public tx where she deposits some gas and calls the gateway contract after 2. Bob, the attacker, catches that...