Oscar Karma Info
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TrustNet Score
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Summary and Final Words
No crucial issues found
The contract does not contain issues of high or medium criticality. This means that no known vulnerabilities were found in the source code.
Contract owner cannot mint
It is not possible to mint new tokens.
Contract owner cannot blacklist addresses.
It is not possible to lock user funds by blacklisting addresses.
Contract owner cannot set high fees
The fees, if applicable, can be a maximum of 25% or lower. The contract can therefore not be locked. Please take a look in the comment section for more details.
Contract cannot be locked
Owner cannot lock any user funds.
Token cannot be burned
There is no burning within the contract without any allowances
Ownership is renounced
The contract does not include owner functions that allow post-deployment modifications.
Contract is not upgradeable
The contract does not use proxy patterns or other mechanisms to allow future upgrades. Its behavior is locked in its current state.
Scope of Work
This audit encompasses the evaluation of the files listed below, each verified with a SHA-1 Hash. The team referenced above has provided the necessary files for assessment.
The auditing process consists of the following systematic steps:
- Specification Review: Analyze the provided specifications, source code, and instructions to fully understand the smart contract's size, scope, and functionality.
- Manual Code Examination: Conduct a thorough line-by-line review of the source code to identify potential vulnerabilities and areas for improvement.
- Specification Alignment: Ensure that the code accurately implements the provided specifications and intended functionalities.
- Test Coverage Assessment: Evaluate the extent and effectiveness of test cases in covering the codebase, identifying any gaps in testing.
- Symbolic Execution: Analyze the smart contract to determine how various inputs affect execution paths, identifying potential edge cases and vulnerabilities.
- Best Practices Evaluation: Assess the smart contracts against established industry and academic best practices to enhance efficiency, maintainability, and security.
- Actionable Recommendations: Provide detailed, specific, and actionable steps to secure and optimize the smart contracts.
A file with a different Hash has been intentionally or otherwise modified after the security review. A different Hash may indicate a changed condition or potential vulnerability that was not within the scope of this review.
Final Words
The following provides a concise summary of the audit report, accompanied by insightful comments from the auditor. This overview captures the key findings and observations, offering valuable context and clarity.
Ownership Privileges
- There are no ownership privileges in this contract.
Note - This Audit report consists of a security analysis of the Oscar Karma smart contract. This analysis did not include functional testing (or unit testing) of the contract’s logic. Moreover, we only audited one token contract for the Oscar Karma team. Other contracts associated with the project were not audited by our team. We recommend investors do their own research before investing.
Files and details
Functions
public
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State variables
public
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Total lines
of code
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Capabilities
Hover on items
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Findings and Audit result
low Issues | 2 findings
Resolved
#1 low Issue
Missing upper limit for amount
The donate function lacks upper limits on contribution amounts, creating vulnerability to economic manipulation, potential UI display overflows, and statistical skewing of donation metrics. Malicious actors could disproportionately influence donor rankings with abnormally large transactions, compromising system integrity. To mitigate, implement a reasonable maximum donation amount per transaction through a simple upper bound check (e.g., require(_amount <= maxDonationLimit, "Donation exceeds maximum limit");). Consider making this limit adjustable by governance to adapt to token value changes over time. For additional protection, implement tiered donation limits or time-based restrictions to prevent rapid successive large donations, ensuring fair representation in donation statistics while maintaining donor flexibility.
Resolved
#2 low Issue
Missing 'isContract' check.
The contract lacks a validation check to ensure that specific parameters are contract addresses. Without this check, there is a risk that non-contract addresses (such as externally owned accounts, or EOAs) could be mistakenly set for parameters intended to reference other contracts. This could lead to failures in executing critical interactions within the contract, as EOAs do not support contract-specific functions. To mitigate this, Implement a validation check to ensure that parameters designated as contract addresses are verified as such. This can be done using Solidity’s Address library function isContract, which checks if an address has associated contract code.