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CASE FILE #10
ExploitBase

Clober Liquidity Vault

December 10, 2024

CAUSE OF DEATH

Reentrancy vulnerability allowed attacker to drain liquidity vault repeatedly.

TOTAL LOST
$500K
CHAIN
Base
TYPE
Exploit
📄

FORENSIC REPORT

TIME OF DEATH

Time of Death: December 10, 2024. The specimen—Clober Liquidity Vault operating on the Base network—was discovered in critical condition following a calculated exploitation of its withdrawal mechanisms. Initial assessment indicates the attack occurred with surgical precision, suggesting the perpetrator had intimate knowledge of the contract's architectural weaknesses. The victim was fully operational up until the moment of compromise.

CAUSE OF DEATH ANALYSIS

Cause of Death Analysis: The pathology reveals a textbook reentrancy vulnerability. The contract's withdrawal function performs external calls before updating internal state variables—a cardinal sin in smart contract engineering. During the withdrawal process, the attacker's malicious contract intercepted control flow, re-entering the vulnerable function repeatedly before the original transaction could update its balance tracking. Each recursive call drained additional liquidity, creating a cascading hemorrhage of $500,000 in total value extraction. The specimen exhibits the classic hallmark of reentrancy death: state inconsistency between external transfers and internal bookkeeping.

CONTRIBUTING FACTORS

Contributing Factors: The vault showed no evidence of reentrancy guards—specifically absent checks-effects-interactions pattern or mutex locks that would have prevented recursive entry. Code analysis suggests the developers were familiar with best practices but chose not to implement them, a decision that proved fatal. There were no observable warning signs in previous transactions; the exploit appeared spontaneous, like a sudden cardiac event in an otherwise stable subject.

VICTIM IMPACT

Victim Impact: Liquidity providers and protocol users experienced total losses of $500,000. The vault's TVL collapsed instantly. Trust metrics flatlined. The Base ecosystem absorbed moderate reputational damage—nothing permanent, but enough to make investors nervous. The attacker walked away with the entire contents of one vault in a single transaction.

PATHOLOGIST'S NOTE

Pathologist's Note: We're staring at the skeleton of a vulnerability so fundamental it might as well have been written into the Genesis block. This wasn't a sophisticated attack—it was an exploit of such basic negligence that it almost feels cruel to document. The specimen had everything needed to survive: the technical knowledge existed, the libraries were available, the pattern was documented across a thousand successful projects. But Clober's engineers looked at the standard playbook and decided to write their own. Now the vault rests in the crypt alongside thousands of other projects that learned the hard way: in crypto, the basics aren't basic. They're survival.

"Clober's liquidity vault on Base suffered catastrophic reentrancy exploit on December 10th, 2024. Half a million dollars extracted through recursive function calls. The smart contract never saw it coming."

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