SlowMist (@SlowMist_Team) “🚨SlowMist TI Alert🚨 💸 @LienFinance Loss: ~542k USD 🔍 Root Cause: The `exchan” — TopicDigg

🚨SlowMist TI Alert🚨 💸 @LienFinance Loss: ~542k USD 🔍 Root Cause: The `exchangeEquivalentBonds` function in BondMakerCollateralizedEth lacks proper multiset integrity checks. It only counts total exception occurrences instead of verifying each bondID's appearance per group. By repeating a single exception bondID in the output group, attackers consumed the exception count twice, masking a missing input exception. This allowed minting new non-exception BondTokens without burning the corresponding input bonds, which were then sold for USDC from a pre-approved victim address. 📌 Attacker: 0x0d7d9023531ad1a88414e216ee2715f63561808a 📌 Victim: 0xa961684a3a654fb2cca8f8991226c0cefc514d80 📌 Vulnerable Contract: 0xda6fc5625e617bb92f5359921d43321cebc6bef0, 0x843225cf6e663e4454732d6b551a737ac7b47de0 Attackers exploited the flawed exception-counting logic to mint unbacked bond tokens, swapped them for USDC via three pre-authorized endpoints, and drained 542,144.628604 USDC from the victim. Powered by Tx: