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kfastov / worldcoin-bridge-linea

World ID state bridge for Linea
MIT License
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Audit all the smart contracts in the bridge #16

Open kfastov opened 2 months ago

kfastov commented 2 months ago

Overview

Conduct a comprehensive security audit of all smart contracts in the bridge, including abstract contracts.

Scope

Tasks

  1. Review each contract for potential security vulnerabilities
  2. Analyze the interaction between contracts for any systemic risks
  3. Check for common smart contract vulnerabilities (e.g., reentrancy, integer overflow/underflow, etc.)
  4. Assess the overall security architecture of the bridge system
  5. Provide a detailed report of findings, including severity levels and recommended fixes

Acceptance Criteria

Additional Notes

DevPelz commented 2 months ago

Hi @kfastov i proposed an audit service in one of the issues raised as i couldn't get you on telegram. should incase you don't have an audit team ready. We could discuss about it. here is my portfolio https://github.com/DevPelz

kfastov commented 2 months ago

Hey @DevPelz! I remember your message, and it would be great to have an audit later, though I think that the contracts are still a bit raw. However we can discuss it in tg: https://t.me/worldcoin_linea_bridge https://t.me/kfastov (sry if I missed your message)

josephchimebuka commented 1 month ago

Hello @kfastov i would also like to work on auditing the bridge contract when it's time. I would review the projects for errors and write unit test for them. I am on the telegram group and I have solved some issues on Only dust too.

kfastov commented 2 weeks ago

@josephchimebuka @DevPelz This issue is finally live and is a part of an ODHack 7.0, so you can apply via OnlyDust page 🙂

ikemHood commented 2 weeks ago

Hey @kfastov I woud love to audit the contracts.

My Approach is...

ikemHood commented 2 weeks ago

I am applying to this issue via OnlyDust platform.

My background and how it can be leveraged

Hey, I am ikem Peter. a fullstack software developer with 3+ years of working experience, I would love to help out with this issue...

How I plan on tackling this issue

To approach this comprehensive security audit, I'd start by thoroughly familiarizing myself with the entire bridge system architecture, including LineaWorldID, LineaStateBridge, CrossDomainOwnableLinea, and any other related contracts. I'd create a detailed checklist of common smart contract vulnerabilities to ensure I don't overlook any potential issues during my review.

Next, I'd systematically go through each contract, line by line, looking for potential security vulnerabilities. I'd pay special attention to how the contracts interact with each other, as systemic risks often arise from these interactions. Throughout this process, I'd document every potential issue I find, categorizing them by severity and potential impact. Once I've completed the individual contract reviews, I'd step back and assess the overall security architecture of the bridge system. I'd then compile all my findings into a comprehensive report, clearly describing each issue, its potential impact, and providing specific recommendations for fixes or mitigations. I'd also include an overall assessment of the bridge's security in the report, along with any assumptions I made during the audit process. Finally, I'd review my report to ensure it meets all the acceptance criteria before submitting it.

Ugo-X commented 2 weeks ago

I am applying to this issue via OnlyDust platform.

My background and how it can be leveraged

I am a Full Stack blockchain Developer with expertise in Next.js, Nest.js, TypeScript, JavaScript, React, Node.js, Three.js, and Solidity. My journey with OnlyDust hackathons began at Edition 1, and I've since made 47 contributions across 11 projects. With my extensive experience on the OnlyDust platform (profile: https://app.onlydust.com/u/Ugo-X), I've honed my skills in delivering quality solutions under pressure. I bring a unique blend of technical proficiency and user-focused design to every project, whether it's crafting immersive 3D experiences or developing smart contracts. My track record shows I can adapt quickly and contribute effectively to diverse challenges. As we surf through Edition 7, I'm excited to leverage my skills and hackathon experience to push the boundaries of blockchain development. I'm confident in my ability to tackle new challenges and drive innovation in this space.

How I plan on tackling this issue

I will employ the following comprehensive approach to solve the issue of conducting a security audit of the smart contracts in the bridge:

  1. Understand the System Architecture: I will start by carefully analyzing the provided information to gain a deep understanding of the overall bridge system, its critical components, and the interactions between the different contracts. This includes the LineaWorldID, LineaStateBridge, CrossDomainOwnableLinea, and any other related contracts within the bridge system.

  2. Contract-level Security Review: I will thoroughly review the code of each contract within the scope of the audit, paying close attention to the implementation of critical functions, access control mechanisms, and the use of external dependencies. This will involve checking for common smart contract vulnerabilities, such as reentrancy, integer overflow/underflow, and other known security issues.

  3. Interaction Analysis: I will analyze the interactions between the different contracts within the bridge system, ensuring that the contract interfaces are designed securely and that the data passed between contracts is properly validated. I will identify any potential attack vectors that could arise from the way the contracts communicate and exchange data.

  4. Systemic Risk Assessment: I will assess the overall security architecture of the bridge system, identifying potential single points of failure and examining the system's ability to withstand various attack scenarios. This will involve evaluating the quality of the access control mechanisms, privilege separation, and privilege escalation prevention.

  5. Documentation and Reporting: I will document all the findings from the security audit, categorizing them by severity (e.g., critical, high, medium, low). For each finding, I will provide a clear and concise description of the issue, its potential impact, and a recommended fix or mitigation strategy. I will also highlight any systemic risks or architectural flaws that could affect the overall security of the bridge system. Finally, I will provide an overall assessment of the bridge's security posture and the level of confidence in the system's ability to withstand attacks.

  6. Comprehensive Audit Report: I will deliver a comprehensive audit report that covers all the contracts within the scope, as per the acceptance criteria. The report will include the detailed findings, severity levels, and recommended fixes for each identified issue. It will also provide an overall assessment of the bridge's security and any recommendations for improving the system's security posture.

By following this approach, I aim to conduct a thorough and comprehensive security audit of the bridge system, identifying and addressing any potential vulnerabilities or security concerns to ensure the overall security and resilience of the system.

DevSwayam commented 2 weeks ago

I am applying to this issue via OnlyDust platform.

My background and how it can be leveraged

I have over 2 years of experience in EVM development and smart contract security, including privacy-focused applications and comprehensive audits. My background includes projects like custom bridges and modification in off chain infra for CCIP based bridges using hyperlane, demonstrating my expertise in identifying and addressing vulnerabilities related to offchain coordination projects.

How I plan on tackling this issue

I would first start with scoping the project by generating SLOC tables and scopes, which will include relevant protocol audit reports to understand similar issues that developers may encounter in the future. Once that is done, I will begin the audit by analyzing each invariant and writing fuzz tests to check whether they can withstand edge cases. I will then prepare a detailed report of my findings, similar to Solodit, and find the best mitigations using resources like Solodit and various audit reports. The final formal report will include a flow diagram of smart contracts, invariant and variant testing, and documentation improvements that were not previously mentioned. Relevant examples of my work can be found on my GitHub profile.

codeZe-us commented 2 weeks ago

I am applying to this issue via OnlyDust platform.

My background and how it can be leveraged

Software Engineer with key focus on Mobile applications with Blockchain Integrations. My stacks include, Swift, Kotlin, Solidity, Golang and Flutter.

How I plan on tackling this issue

To address theses issues, firstly, for preparation, I will understand the purpose and functionality of each contract (LineaWorldID, LineaStateBridge, CrossDomainOwnableLinea), then analyze each contract individually for potential security vulnerabilities, secondly, I will identify critical functions, particularly those related to funds transfer, access control, and state changes.

For Inter-contract Analysis, evaluating how contracts interact by focusing on call chains, data flow, and dependencies between contracts will solve the issue. After working on all these, I will procesd to checking for common vulnerabilities like logic errors, incorrect inheritance structure, access control flaws, reentrancy.

Moving over to security architecture, I will access the overall security architecture of the bridge system by ensuring that contracts are designed with the principle of least privilege, and critical operations have sufficient safeguards. Also, incase of any assumptions made in the design or implementation of the contracts, I will validate these assumptions to ensure they are sound and do not introduce risks.

For Reporting, I will document all findings by categorising them by severity (Critical, High, Medium, Low). Then for each issue, I will provide a detailed explanation, including the potential impact and how it might be exploited. If any issue is identified, I will recommend fixes or mitigation strategies.

bomanaps commented 2 weeks ago

I am applying to this issue via OnlyDust platform.

My background and how it can be leveraged

I am a seasoned blockchain security engineer with hands-on experience in identifying and mitigating security vulnerabilities within smart contracts and blockchain systems. My background includes participating in smart contract security audits with platforms like Sherlock and CodeHawks, where I've successfully identified multiple high and medium-severity vulnerabilities. Specifically, I found four high and two medium vulnerabilities in a Sherlock audit and seven high and eight medium vulnerabilities in CodeHawks' FirstFlight. Moreover, I contribute to the Grandine project as part of the EPF5 team, focusing on Ethereum consensus clients written in Rust. My role involves profiling and securing the consensus layer, giving me a deep understanding of blockchain architecture, consensus mechanisms, and the importance of ensuring secure and reliable operations across different layers of the blockchain stack.

How I plan on tackling this issue

Review Each Contract for Potential Security Vulnerabilities Analyze the Interaction Between Contracts for Any Systemic Risks Assess the Overall Security Architecture of the Bridge System Write invariant test to improve and check the contract test structure

DevPelz commented 2 weeks ago

I am applying to this issue via OnlyDust platform.

My background and how it can be leveraged

I have extensive knowledge of smart contract vulnerabilities, with a strong track record of auditing numerous contracts. My expertise also extends to auditing bridges and cross-chain messaging protocols. For more details, you can explore my portfolio here: https://github.com/DevPelz

How I plan on tackling this issue

My approach would involve conducting a thorough manual review and security assessment, complemented by writing fuzz tests to identify potential vulnerabilities. I would then provide detailed mitigations, compiling everything into a comprehensive, well-documented vulnerability report, along with a high-quality assurance report to ensure the overall security and integrity of the project.

onlydustapp[bot] commented 2 weeks ago

The maintainer kfastov has assigned DevPelz to this issue via OnlyDust Platform. Good luck!