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Bugs in commonly forked DeFi protocols

defi-fork-bugs's Introduction

Common fork bugs

Compound

Compound: price manipulation of DAI on Coinbase impacted Coinbase oracle price Postmortem
CREAM: flashloan attack & reentrancy with ERC777-like token (no checks-effects-interaction protection) Postmortem POC
CREAM: Price manipulation Postmortem POC
Lendf.me: Flashloan and reentrancy (no checks-effects-interaction protection) Postmortem
Compound: Double-entry point token issue Retrospective POC
Lodestar Finance: Exchange rate manipulation Thread POC
Hundred Finance: Flashloan and reentrancy on gnosis, where native token has callback hook (no checks-effects-interaction protection) Postmortem
Ola Finance: Flashloan and reentrancy (no checks-effects-interaction protection) Postmortem
Rari Capital: Flashloan and reentrancy (no checks-effects-interaction protection) POC
Venus: Chainlink LUNA oracle became inaccurate during the Terra collapse, which cause a similar result as oracle manipulation and led to draining of protocols writeup
Hundred Finance: Exploit of empty markets Postmortem POC
0VIX: price oracle vulnerability allowed donation-based price maniulation Thread POC
Midas Capital: Exploit of empty markets writeup
Onyx Finance: Exploit of empty markets Postmortem POC
Sonne Finance: Exploit of empty markets Postmortem

Uniswap v2

Uranium Finance: bad k-value Postmortem POC
DDC: bad k-value Thread
Swapos: bad k-value Thread POC

Balancer

Balancer: deflationary token can drain pools Postmortem
Sentiment: read-only reentrancy Postmortem forum POC
Balancer: Double entrypoint token DoS risk Forum
SturdyFinance: read-only reentrancy Thread1 Thread2

Curve

Curve: read-only reentrancy Postmortem

Aave

Aave V2: risk of price manipulation can lead to accumulating bad debt Governance proposed mitigation writeup
Blizz Finance: Chainlink LUNA oracle became inaccurate during the Terra collapse, which had a similar result as oracle manipulation and led to draining of protocols writeup
Agave Finance: Flashloan and reentrancy on gnosis, where native token has callback hook (no checks-effects-interaction protection) Postmortem
HopeLend: Empty market issue (same as the issue in Compound Finance) combined with rounding error writeup
Radiant Finance: Empty market issue (same as the issue in Compound Finance) combined with rounding error writeup

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