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/2021-12/Visor_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
The malicious contract attacked Visor's OHM-ETH 1% LP management contract. Funds in the targeted pool were recovered by Visor just hours after the attack. The funds deposited by users into Visor are not at risk. Attack method (per SlowMist): Flash Loan Attack. Reported loss: $ 975,720.
Sourced from
slowmist
Technical record
- chain
- —
- protocol
- Visor Finance
- bug_class
- flashloan
- date_occurred
- 2021-11-28
- loss_usd
- $975,720
- source_id
- sm:visor-finance::2021-11-28
Related — same bug class· flashloan