Business Logic Vulnerability in dropTopVotedPiece Function

[c4-bot-1]

Lines of code

https://github.com/code-423n4/2023-12-revolutionprotocol/blob/d42cc62b873a1b2b44f57310f9d4bbfdd875e8d6/packages/revolution/src/CultureIndex.sol#L519

Vulnerability details

Potential Risk: The dropTopVotedPiece function in the CultureIndex contract allows the dropperAdmin to drop the top-voted piece. While the function checks if the caller is the dropperAdmin, there is a potential business logic vulnerability. The function only requires that the total vote weight of the top-voted piece meets or exceeds its quorumVotes to be dropped.

Proof of Concept (PoC): Consider a scenario where an attacker gains control of the dropperAdmin account or convinces the dropperAdmin to perform a malicious action. The attacker could manipulate the voting system to inflate the total vote weight of a specific piece, making it meet the quorumVotes requirement even if it should not be dropped. This could lead to the unintended or premature dropping of art pieces.

Recommended Mitigation Steps: To mitigate the business logic vulnerability in the dropTopVotedPiece function, you should consider implementing additional checks and safeguards to ensure that art pieces are dropped based on genuine and valid criteria. Here are some recommendations:

1. Review the criteria for dropping art pieces, such as quorumVotes, and ensure that it aligns with the intended logic and security requirements of your contract.

2. Consider adding a time-based requirement or cooldown period before a piece can be dropped. This can prevent premature drops and allow for more fair and secure voting.

3. Implement a multi-signature or multi-factor authentication mechanism for the dropperAdmin role to enhance security and prevent unauthorized drops.

4. Regularly monitor and audit the contract to detect any unusual voting patterns or anomalies that may indicate malicious activity.

5. Consider involving a third-party audit or security expert to review and assess the contract's functionality, especially in critical areas like voting and dropping pieces.

By implementing these mitigation steps, you can reduce the risk associated with the dropTopVotedPiece function and enhance the security and fairness of your contract. Additionally, it's crucial to keep the contract up-to-date with the latest security best practices and conduct thorough testing to identify and address potential vulnerabilities.

Assessed type

Other

[c4-pre-sort]

raymondfam marked the issue as insufficient quality report

[c4-pre-sort]

raymondfam marked the issue as duplicate of #688

[c4-judge]

MarioPoneder marked the issue as unsatisfactory: Insufficient proof