Q2 2026 Security & Compliance Report67 incidents, $764M in losses, 88% from operational failures.
Get the report →
UACatsDivision logo

UACatsDivision

Audit name:

[SCA] UACatsDivision | NFT | Feb2023

Date:

Feb 17, 2023

Table of Content

→Introduction
→Audit Summary
→Document Information
→System Overview
→Executive Summary
→Findings
→Appendix 1. Severity Definitions
→Appendix 2. Scope
→Disclaimer

Want a comprehensive audit report like this?

Introduction

UACatsDivision is an NFT collection of 10,000 unique cats on the Ethereum blockchain. Each cat is unique and generated with more than 100 different options of emotions, clothes, etc.

titlecontent
PlatformEVM
LanguageSolidity
Timeline16/02/2023 - 20/02/2023
Methodologyhttps://hackenio.cc/sc_methodology→

    Review Scope

    Repositoryhttps://github.com/uacatsdivision-dev/uacatsdivision-contract→
    Commit8471531e96a5fed4a3a02ae813deec7d5dd1b1cf

    Audit Summary

    Total9.5/10
    Security Score

    10/10

    Test Coverage

    63.33%

    Code Quality Score

    10/10

    Documentation Quality Score

    5/10

    5Total Findings
    3Resolved
    0Accepted
    2Mitigated

    The system users should acknowledge all the risks summed up in the risks section of the report

    Document Information

    This report may contain confidential information about IT systems and the intellectual property of the Customer, as well as information about potential vulnerabilities and methods of their exploitation.

    The report can be disclosed publicly after prior consent by another Party. Any subsequent publication of this report shall be without mandatory consent.

    Document

    NameSmart Contract Code Review and Security Analysis Report for UACatsDivision
    Audited ByHacken
    Websitehttps://uacatsdivision.com/→
    Changelog16/06/2023 - Initial Review
    20/02/2023 - Second Review

    • Document

      Name
      Smart Contract Code Review and Security Analysis Report for UACatsDivision
      Audited By
      Hacken
      Website
      https://uacatsdivision.com/→
      Changelog
      16/06/2023 - Initial Review
      20/02/2023 - Second Review

    System Overview

    UACatsDivision is an NFT collection of 10,000 unique cats on the Ethereum blockchain. Each cat is unique and generated with more than 100 different options of emotions, clothes, etc.

    • Quantity – 10,000 NFT

    • Blockchain – Ethereum

    • Cost – 0,065 ETH

    • Standard – ERC-721

    • Royalty – 5% (All funds will be sent to charity and aid for Ukraine)

    Privileged roles

    The contract has one privileged role: owner, with the following permissions:

    • Stop and resume the sale at any time.

    • Mint arbitrary amount of tokens for free. No tokens can be minted if the total supply is reached.

    • Withdraw native coins collected on the contract.

    • Set up baseURI and _contractURI.

    Executive Summary

    Documentation quality

    The total Documentation Quality score is 5 out of 10.

    • Functional requirements are provided in the Readme file. Basic requirements are provided.

    • Technical description is not provided.

    Code quality

    The total Code quality score is 10 out of 10.

    • Code follows Solidity style guidelines.

    • Development environment is configured.

    Test coverage

    Code coverage of the project is 63.33% (branch coverage).

    • Part of the functionality is not covered.

    • Multiple-user interactions are not covered.

    Security score

    Upon auditing, the code was found to contain 0 critical, 0 high, 2 medium, and 3 low severity issues. Out of these, 3 issues have been addressed and resolved, leading to a security score of 10 out of 10.

    All identified issues are detailed in the “Findings” section of this report.

    Summary

    According to the assessment, the Customer's smart contract has the following score: 9.5.

    Scoring Methodologyarrow right

    Findings

    F-2023-O133Redundant values
    Status
    mitigated
    Severity

    Medium
    F-2023-O133Inconsistent data
    Status
    mitigated
    Severity

    Medium
    F-2023-O134Floating Pragma
    Status
    fixed
    Severity

    Low
    F-2023-1341Best practices violation
    Status
    fixed
    Severity

    Low
    F-2023-1340Missing 0 value validation
    Status
    fixed
    Severity

    Low
    Code
    ―
    Title
    Status
    Severity
    F-2023-O133Redundant values
    mitigated

    Medium
    F-2023-O133Inconsistent data
    mitigated

    Medium
    F-2023-O134Floating Pragma
    fixed

    Low
    F-2023-1341Best practices violation
    fixed

    Low
    F-2023-1340Missing 0 value validation
    fixed

    Low
    1-5 of 5 findings

    Identify vulnerabilities in your smart contracts.

    Appendix 1. Severity Definitions

    When auditing smart contracts, Hacken is using a risk-based approach that considers Likelihood, Impact, Exploitability and Complexity metrics to evaluate findings and score severities.

    Reference on how risk scoring is done is available through the repository in our Github organization:

    Severity

    Description

    Critical
    		Critical vulnerabilities are usually straightforward to exploit and can lead to the loss of user funds or contract state manipulation.

    High
    		High vulnerabilities are usually harder to exploit, requiring specific conditions, or have a more limited scope, but can still lead to the loss of user funds or contract state manipulation.

    Medium
    		Medium vulnerabilities are usually limited to state manipulations and, in most cases, cannot lead to asset loss. Contradictions and requirements violations. Major deviations from best practices are also in this category.

    Low
    		Major deviations from best practices or major Gas inefficiency. These issues will not have a significant impact on code execution, do not affect security score but can affect code quality score.

    • Severity

      Critical

      Description

      Critical vulnerabilities are usually straightforward to exploit and can lead to the loss of user funds or contract state manipulation.

      Severity

      High

      Description

      High vulnerabilities are usually harder to exploit, requiring specific conditions, or have a more limited scope, but can still lead to the loss of user funds or contract state manipulation.

      Severity

      Medium

      Description

      Medium vulnerabilities are usually limited to state manipulations and, in most cases, cannot lead to asset loss. Contradictions and requirements violations. Major deviations from best practices are also in this category.

      Severity

      Low

      Description

      Major deviations from best practices or major Gas inefficiency. These issues will not have a significant impact on code execution, do not affect security score but can affect code quality score.

    Appendix 2. Scope

    The scope of the project includes the following smart contracts from the provided repository:

    Scope Details

    Repositoryhttps://github.com/uacatsdivision-dev/uacatsdivision-contract→
    Commit8471531e96a5fed4a3a02ae813deec7d5dd1b1cf
    WhitepaperNot provided
    RequirementsProvided
    Technical RequirementsNot provided

    Contracts in Scope

    contracts
    UACatsDivision.sol - contracts › UACatsDivision.sol

    Disclaimer