C3 x Immunefi Bug Bounty Program
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up to $100,000
up to 100,000 USDC
Normal, Low Risks
C3 is a next generation self-custodial exchange transforming the market structure of crypto and providing a secure, transparent, and trustless platform for trading. C3 offers all of the functionality of traditional exchanges, including instant execution, high throughput, REST APIs, Websocket connectivity, advanced order types and support for all networks, without any of the trade-offs. With C3, users can enjoy the benefits of a self-custodial exchange without sacrificing the performance and accessibility that they expect from traditional exchanges and robust trading platforms.
C3 provides rewards in USDC, denominated in USD. For more details about the payment process, please view the Rewards by Threat Level section further below.
Whilst this program does not request for KYC, C3 reserves the right to ensure security researchers are not subject OFAC sanctions and cannot be on the SDN list.
C3 adheres to category 3 Approval Needed. This Policy determines what information researchers are allowed to make public from their submitted bug reports. For more information about the category selected, please refer to the Responsible Publication page.
Primacy of Impact vs Primacy of Rules
C3 adheres to the Primacy of Impact for the following impacts:
- Smart Contract: Critical
- Smart Contract: High
- Smart Contract: Medium
- Smart Contract: Low
- Web/App: Critical
- Web/App: High
- Web/App: Medium
- Web/App: Low
Primacy of Impact means that the impact is prioritized rather than a specific asset. This encourages security researchers to report on all bugs with an in-scope impact, even if the affected assets are not in scope. For more information, please see Best Practices: Primacy of Impact
When submitting a report on Immunefi’s dashboard, the security researcher should select the Primacy of Impact asset placeholder. If the team behind this project has multiple programs, those other programs are not covered under Primacy of Impact for this program. Instead, check if those other projects have a bug bounty program on Immunefi.
*If the project has any testnet and/or mock files, those will not be covered under Primacy of Impact.
All other impacts are considered under the Primacy of Rules, which means that they are bound by the terms and conditions set within this program.
Proof of Concept (PoC) Requirements
A PoC, demonstrating the bug's impact, is required for this program and has to comply with the Immunefi PoC Guidelines and Rules.
Known Issue Assurance
C3 commits to providing Known Issue Assurance to bug submissions through their program. This means that C3 will either disclose known issues publicly, or at the very least, privately via a self-reported bug submission.
In a potential scenario of a mediation, this allows for a more objective and streamlined process, in order to prove that an issue is known. Otherwise, assuming the bug report is valid, it would result in the report being considered as in-scope, and due a reward.
C3 has provided these completed audit reports for reference. Any unfixed vulnerability mentioned in these reports are not eligible for a reward.
The project may be receiving reports that are valid (the bug and attack vector are real) and cite assets and impacts that are in scope, but there may be obstacles or barriers to executing the attack in the real world. In other words, there is a question about how feasible the attack really is. Conversely, there may also be mitigation measures that projects can take to prevent the impact of the bug, which are not feasible or would require unconventional action and hence, should not be used as reasons for downgrading a bug's severity.
Therefore, Immunefi has developed a set of feasibility limitation standards which by default states what security researchers, as well as projects, can or cannot cite when reviewing a bug report.
Immunefi Standard Badge
By adhering to Immunefi’s best practice recommendations, C3 has satisfied the requirements for the Immunefi Standard Badge.
Rewards by Threat Level
Rewards are distributed according to the impact of the vulnerability based on the Immunefi Vulnerability Severity Classification System V2.3.
For critical smart contract bugs, the reward amount is 10% of the funds directly affected up to a maximum of USD 100 000. The calculation of the amount of funds at risk is based on the time and date the bug report is submitted. However, a minimum reward of USD 50 000 is to be rewarded in order to incentivize security researchers against withholding a bug report.
Repeatable Attack Limitations
- If the smart contract where the vulnerability exists can be upgraded/paused/killed, only the initial attacks within the first hour will be considered for a reward. This is because the project can mitigate the risk of further exploitation by upgrading, pausing, or in some cases, killing the component where the vulnerability exists. The reward amount will depend on the severity of the impact and the funds at risk.
- For critical repeatable attacks on smart contracts that can not be upgraded/paused/killed, the project will consider the cumulative impact of the repeatable attacks for a reward. This is because the project cannot prevent the attacker from repeatedly exploiting the vulnerability until all funds are drained and/or other irreversible damage is done. Therefore, this warrants a reward equivalent to 10% of funds at risk, capped at the maximum critical reward.
Reward Calculation for High Level Reports
- High vulnerabilities concerning theft/permanent freezing of unclaimed yield/royalties are considered at the full amount of funds at risk, capped at the maximum high reward. This is to incentivize security researchers to uncover and responsibly disclose vulnerabilities that may have not have significant monetary value today, but could still be damaging to the project if it goes unaddressed.
- In the event of temporary freezing, the reward increases at a multiplier of two from the full frozen value for every additional 24h that the funds are temporarily frozen, up until a max cap of the high reward. This is because as the duration of the freezing lengthens, the potential for greater damage and subsequent reputational harm intensifies. Thus, by increasing the reward proportionally with the frozen duration, the project ensures stronger incentives for bug disclosure of this nature.
For critical web/apps bug reports will be rewarded with USD 100,000, only if the impact leads to:
- A loss of funds involving an attack that does not require any user action
- Unauthorized minting of tokens on-chain
- Private key or private key generation leakage leading to unauthorized access to user funds
All other impacts that would be classified as Critical would be rewarded a flat amount of USD 50,000. The rest of the severity levels are paid out according to the Impact in Scope table.
Reward Payment Terms
Payouts are handled by the C3 team directly and are denominated in USD. However, payments are done in USDC.
The calculation of the net amount rewarded is based on the average price between CoinMarketCap.com and CoinGecko.com at the time the bug report was submitted. No adjustments are made based on liquidity availability.
Out of Scope & Rules
These impacts are out of scope for this bug bounty program.
- Impacts requiring attacks that the reporter has already exploited themselves, leading to damage
- Impacts caused by attacks requiring access to leaked keys/credentials
- Impacts caused by attacks requiring access to privileged addresses (governance, strategist) except in such cases where the contracts are intended to have no privileged access to functions that make the attack possible
- Impacts relying on attacks involving the depegging of an external stablecoin where the attacker does not directly cause the depegging due to a bug in code
- Mentions of secrets, access tokens, API keys, private keys, etc. in Github will be considered out of scope without proof that they are in-use in production
- Best practice recommendations
- Feature requests
- Impacts on test files and configuration files unless stated otherwise in the bug bounty program
Smart Contract Specific:
- Incorrect data supplied by third party oracles
- Not to exclude oracle manipulation/flash loan attacks
- Impacts requiring basic economic and governance attacks (e.g. 51% attack)
- Lack of liquidity impacts
- Impacts from Sybil attacks
- Impacts involving centralization risks
Websites and Apps
- Theoretical impacts without any proof or demonstration
- Impacts involving attacks requiring physical access to the victim device
- Impacts involving attacks requiring access to the local network of the victim
- Reflected plain text injection (e.g. url parameters, path, etc.)
- This does not exclude persistent plain text injection
- Any impacts involving self-XSS
- Captcha bypass using OCR without impact demonstration
- CSRF with no state modifying security impact (e.g. logout CSRF)
- Impacts related to missing HTTP Security Headers (such as X-FRAME-OPTIONS) or cookie security flags (such as “httponly”) without demonstration of impact
- Server-side non-confidential information disclosure, such as IPs, server names, and most stack traces
- Impacts causing only the enumeration or confirmation of the existence of users or tenants
- Impacts caused by vulnerabilities requiring un-prompted, in-app user actions that are not part of the normal app workflows
- Lack of SSL/TLS best practices
- Impacts that only require DDoS
- UX and UI impacts that do not materially disrupt use of the platform
- Impacts primarily caused by browser/plugin defects
- Leakage of non sensitive API keys (e.g. Etherscan, Infura, Alchemy, etc.)
- Any vulnerability exploit requiring browser bugs for exploitation (e.g. CSP bypass)
- SPF/DMARC misconfigured records)
- Missing HTTP Headers without demonstrated impact
- Automated scanner reports without demonstrated impact
- UI/UX best practice recommendations
- Any testing on mainnet or public testnet deployed code; all testing should be done on local-forks of either public testnet or mainnet
- Any testing with pricing oracles or third-party smart contracts
- Attempting phishing or other social engineering attacks against C3 employees and/or customers
- Any testing with third-party systems and applications (e.g. browser extensions) as well as websites (e.g. SSO providers, advertising networks)
- Any denial of service attacks that are executed against project assets
- Automated testing of services that generates significant amounts of traffic
- Public disclosure of an unpatched vulnerability in an embargoed bounty
C3 with Immunefi has annouced Bug Bounty Program for all security researchers and whitehat hackers. The Program give an opportunity to review code, find bugs and earn up to $100,00 in USDC.
from 28 Nov 2023 22:12(UTC+3)