Incident Overview
Crypto Burgers suffered a flash loan attack.
The attack was caused by a smart contract vulnerability that allows the token to burn in any account.
According to the official announcement, whitehat hacker did a front-run the hacker's transaction and recovered part of the stolen funds:
https://medium.com/@cryptoburgernft/it-has-been-6-days-since-the-attack-17fc253a57b5
Stolen funds were transferred to the contract deployer:
https://bscscan.com/tx/0xeaad36bd…a46fce
Incident Report
Protocol Information
Market Context at Time of Hack
What the Attacker Needed to Succeed
Understanding the prerequisites for this type of attack helps auditors identify protocols that are most at risk and helps developers build better defenses.
What Auditors Should Check
If you're auditing a protocol with similar architecture to Cryptoburgers, these are the critical security checks that could have prevented this incident (January 2022).
- Verify all logic paths related to Other / Flash Loan Attack are guarded by proper access controls and input validation - see the Flash Loans Attacks attack class for patterns
- Review privileged functions (owner, admin, governance) for potential abuse vectors - centralization risks should be documented and bounded with timelocks or multi-sigs
Master these auditing techniques with hands-on labs and real exploit scenarios in the Smart Contract Hacking course.
Free TrialFunds Recovery
Recovered
$450K
Net Loss
319550
Related Attack Classes
The technique used in this hack maps to these vulnerability classes in our security curriculum:
Sources & References
Learn to Prevent the Next Cryptoburgers
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