VERDICT —UNRATED
Verdict pending. Auto-ingested incidents are reviewed before a public verdict is rendered.
Root cause
Root-cause analysis not yet published. The incident description below contains all currently available signal — review the attack transaction directly for definitive forensics.
▰ PROOF OF CONCEPT
DEFIHACKLABS
src/test/2020-06/Balancer_20200628_exp.sol
view forked test on github ↗Reproducible Foundry test fork from SunWeb3Sec/DeFiHackLabs. Clone the repo, run forge test against the file path above, and replay the exploit against a mainnet fork at the historical block. Use for reproduction only — not for live targets.
Forensic narrative
According to DeBank Twitter, hackers once again used dYdX's lightning loan to attack the COMP trading pair in Balancer's part of the liquidity pool, and took away the unreceived COMP rewards from the pool to make a profit of 10.8 ETH, which is about $2408. Attack method (per SlowMist): Flash loan attack. Reported loss: $ 2,408.
Sourced from
slowmist
Technical record
- chain
- —
- protocol
- Balancer
- bug_class
- flashloan
- date_occurred
- 2020-06-30
- loss_usd
- $2,408
- source_id
- sm:balancer::2020-06-30
Related — same bug class· flashloan