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Security Audit Report for SoSoValue Index

DESCRIPTION

The SoSoValue Index Protocol is a cutting-edge spot index solution designed to make crypto investments simple and secured. SSI Protocol leverages on-chain smart contracts to repackage multi-chain, multi-asset portfolios into Wrapped Tokens (SSI). These tokens represent a basket of underlying assets, enabling Wrapped Tokens to track the value fluctuations of the spots basket, effectively achieving the effects of passive index investing.

The core contracts covered in this audit include SSI Protocol. The iterative audit covers the code in the initial version, as well as subsequent versions to fix discovered issues, as detailed in our audit report. Please note that external dependencies are assumed reliable and are therefore excluded from the audit scope.

Our audit methodology employs automated vulnerability scans, manual verification, and business logic analysis to uncover potential security issues coupled with gas and code quality optimization recommendations.

In summary, we have found that the codebase contains several high-risk issues that require prompt attention. In addition, we have identified other non-critical issues as well as security suggestions that should be considered. The SoSoValue team has addressed these issues promptly. It is important to note that our audit covers only the final reported versions of the codebase. Any subsequent updates would require a re-evaluation.

KEY FINDINGS

In total, we find 5 potential issues in the smart contract. We also have 5 recommendations and 5 notes, as follows:

High Risk: 2
Medium Risk: 3
Low Risk: 0
Recommendation: 5
Note: 5
ID Severity Description Category Status
1 High Incorrect check on amount in function withdraw() DeFi Security Fixed
2 High Insufficient status check in function rejectRedeemRequest() DeFi Security Fixed
3 Medium Lack of implementation of pause() and unpause() in contract USSI DeFi Security Fixed
4 Medium Potential replay attack in HedgeOrder and OrderInfo DeFi Security Fixed
5 Medium Potential out-of-gas when processing loops DeFi Security Fixed
6 - Fix the typos Recommendation Fixed
7 - Lack of invoking function _disableInitializers() Recommendation Fixed
8 - Remove unnecessary checks Recommendation Confirmed
9 - Check parameters in the constructors and initializers Recommendation Fixed
10 - Use safe ERC-20 operations Recommendation Fixed
11 - Potential centralization risk Note -
12 - Withdrawal may not occur within the expected timeframe Note -
13 - Limited support tokens in the protocol Note -
14 - Inconsistency of participant permissions in contracts AssetIssuer and USSI Note -
15 - Additional checks for rescuing funds Note -

More details are provided in the audit report.

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