ChainBleedv0.1 · open intel
← back to feed·BSCLOGIC2021-11-15 · 4y ago
Incident · SLOWMIST

Nerve

Logic Vulnerability
Estimated loss
VERDICT —UNRATED
Verdict pending. Auto-ingested incidents are reviewed before a public verdict is rendered.
▰ METHOD
LOGIC
LOGICBYTECODE 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/2021-12/NerveBridge_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 Nerve cross-chain bridge MetaPool was attacked. This attack was an exploit of the logical vulnerabilities of fUSDT and UST MetaPool on the Nerve cross-chain bridge BSC, causing the fUSDT and UST liquidity in the Nerve staking pool to be exhausted, and the attacker made a profit of about 900 BNB . The attacked contract code Fork is from Saddle.Finance. Attack method (per SlowMist): Logic Vulnerability. Reported loss: 900 BNB.

Primary source
https://mp.weixin.qq.com/s/bqSAwKQn9ZN79r6cELIi9w
Sourced from
slowmist
Technical record
chain
bsc
protocol
Nerve
bug_class
logic
date_occurred
2021-11-15
loss_usd
source_id
sm:nerve::2021-11-15
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