Audit name:
[SCA] BOLD | ERC20 | Mar2024
Date:
Mar 25, 2024
Table of Content
Introduction
We express our gratitude to the BOLD team for the collaborative engagement that enabled the execution of this Smart Contract Security Assessment.
BOLD is an ERC-20 token project.
| title | content |
|---|---|
| Platform | EVM |
| Language | Solidity |
| Tags | Solidity; Fungible Token |
| Timeline | 06/03/2024 - 24/07/2024 |
| Methodology | https://hackenio.cc/sc_methodology→ |
Review Scope | |
|---|---|
| Repository | https://github.com/we-are-bold/contracts→ |
| Commit | 0d32de1 |
| Remediation Commit | ca623f7 |
Review Scope
- Commit
- 0d32de1
- Remediation Commit
- ca623f7
Audit Summary
10/10
70.83%
9/10
10/10
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 | |
|---|---|
| Name | Smart Contract Code Review and Security Analysis Report for BOLD |
| Audited By | Olesia Bilenka |
| Approved By | Ataberk Yavuzer |
| Website | https://wearebold.io→ |
| Changelog | 07/03/2024 - Preliminary Report |
| 18/03/2024 - Final Report | |
| 26/07/2024 - Project Renaming |
Document
- Name
- Smart Contract Code Review and Security Analysis Report for BOLD
- Audited By
- Olesia Bilenka
- Approved By
- Ataberk Yavuzer
- Website
- https://wearebold.io→
- Changelog
- 07/03/2024 - Preliminary Report
- 18/03/2024 - Final Report
- 26/07/2024 - Project Renaming
System Overview
BOLD is an ERC-20 token project with the following contracts:
BOLD — simple ERC-20 token that mints all initial supply to a deployer. Additional minting is not allowed.
It has the following attributes:
Name: BOLD
Symbol: BOLD
Decimals: 18
Total supply: 100m tokens.
ERC20 — a contract that provides basic functionality for the BOLD contract.
SafeMath — a library that provides wrappers over Solidity's arithmetic operations with added overflow checks. Used in the ERC20 contract.
Context — a contract that provides information about the current execution context. Used in the ERC20 contract.
Executive Summary
Documentation quality
The total Documentation Quality score is 10 out of 10.
The requirements and tokenomics are provided.
Code quality
The total Code Quality score is 9 out of 10.
The code duplicates commonly known contracts instead of reusing them.
The development environment is configured.
The code mostly follows Solidity style guide.
Test coverage
Code coverage of the project is 70.83% (branch coverage).
Most of the functionality is covered with tests.
Some utils and main functionality conditions are not tested thoroughly.
Security score
Upon auditing, the code was found to contain 0 critical, 0 high, 0 medium, and 0 low and 5 informational severity issues, leading to a security score of 10 out of 10.
All identified issues are detailed in the “Findings” section of this report.
Summary
The comprehensive audit of the customer's smart contract yields an overall score of 9.8. This score reflects the combined evaluation of documentation, code quality, test coverage, and security aspects of the project.
Risks
The whitepaper refers to the project under its previous name before the renaming occurred.
Findings
SafeMath library usageOwnable InheritanceCode ― | Title | Status | Severity | |
|---|---|---|---|---|
| F-2024-1310 | Redundant Constructor Visibility | fixed | Observation | |
| F-2024-1308 | Variables to Mark as Immutable or Constants | fixed | Observation | |
| F-2024-1307 | Redundant SafeMath library usage | fixed | Observation | |
| F-2024-1305 | Redundant Ownable Inheritance | accepted | Observation | |
| F-2024-1300 | Floating Pragma | fixed | Observation |
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 | |
|---|---|
| Repository | https://github.com/we-are-bold/contracts/→ |
| Commit | 0d32de1b04f0f73df3abfc98d102334a7c663257 |
| Whitepaper | https://raw.githubusercontent.com/we-are-bold/papers/latest/Whitepaper.pdf→ |
| Tokenomics | https://raw.githubusercontent.com/we-are-bold/papers/latest/Tokenomics.pdf→ |
| Litepaper | https://raw.githubusercontent.com/we-are-bold/papers/latest/Litepaper.pdf→ |
| Requirements | https://github.com/we-are-bold/contracts/blob/main/README.md→ |
Scope Details
- Commit
- 0d32de1b04f0f73df3abfc98d102334a7c663257