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.
Forensic narrative
On December 13, the DeFi platform Definer oracle was attacked. This incident was caused by the problem of Definer’s implementation of the oracle in OEC. It used the token balance of a single liquidity pool at a point in time as the price source, which led to the accident. The implementation of Ethereum used ChainLink’s The oracle does not have this problem. Attack method (per SlowMist): Oracle Attack. Reported loss: 30,765 CHE.
Primary source
https://mp.weixin.qq.com/s/YokbbrGD-G_cbMKoMWyJtw ↗Sourced from
slowmist
Technical record
- chain
- ethereum
- protocol
- Definer
- bug_class
- oracle
- date_occurred
- 2021-12-13
- loss_usd
- —
- source_id
- sm:definer::2021-12-13
Related — same bug class· oracle