ChainBleedv0.1 · open intel
← back to feed·REENTRANCY2021-08-30 · 4y ago
Incident · CHAINSEC

Cream Finance

Exploit
Estimated loss
$19.00M
VERDICT —UNRATED
Verdict pending. Auto-ingested incidents are reviewed before a public verdict is rendered.
▰ METHOD
REENTRANCY
REENTRANCYBYTECODE CATCHABLEAI SCANNABLE
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/2021-08/Cream_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

An unknown hacker has managed to gain $18.8 million in the latest flash loan exploit of the Cream Finance protocol through a reentrancy bug introduced by the Amp (AMP) token, according to an investigation by blockchain security firm Peckshield. Reported loss: $19,000,000.

Primary source
https://cointelegraph.com/news/cream-finance-defi-platform-loses-19m-in-a-flash-loan-hack
Sourced from
chainsec
Technical record
chain
protocol
Cream Finance
bug_class
reentrancy
date_occurred
2021-08-30
loss_usd
$19,000,000
source_id
cs:cream-finance::2021-08-30
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