Ankr

Ankr is a decentralized blockchain infrastructure provider that operates an array of nodes globally distributed across over 50 Proof-of-Stake networks.

Ankr Staking makes cross-chain staking, liquid staking, and other yield-earning opportunities simple and accessible to all crypto investors. Ankr has created a scalable, flexible and decentralized staking mechanism that resolves the capital inefficiency of Proof-of-Stake networks and similar blockchain consensus mechanisms. Stake your crypto and get liquid staking tokens or use liquid staking to boost your yield.

For more information about Ankr, please visit https://www.ankr.com/about-staking/.

Rewards are distributed according to the impact of the vulnerability based on the Immunefi Vulnerability Severity Classification System V2.2. This is a simplified 5-level scale, with separate scales for websites/apps, smart contracts, and blockchains/DLTs, focusing on the impact of the vulnerability reported.

All web/app bug reports must come with a PoC with an end-effect impacting an asset-in-scope in order to be considered for a reward. Explanations and statements are not accepted as PoC and code is required.

Critical smart contract vulnerabilities are capped at 5% of economic damage, primarily taking into consideration funds at risk. However, there is a minimum reward of USD 10 000.

All other rewards for the Ankr bug bounty program are scaled based on an internally established team criteria, taking into account the exploitability of the bug, the impact it causes, and the likelihood of the vulnerability presenting itself, which is especially factored in with bug reports requiring multiple conditions to be met that are currently not in-place. However, there is a minimum reward of USD 1 000 for each severity level, rewards will be provided at the determined fair value by the team depending on these conditions, assuming that the bug report is in-scope of the bug bounty program.

The following vulnerabilities marked in https://www.ankr.com/docs/staking/extra/audit-reports/ are not eligible for a reward.

Payouts are handled by the Ankr team directly and are denominated in USD. However, payouts are done in ANKR, USDT and USDC, with the choice of the ratio at the discretion of the team.

Smart Contract

Websites and Applications

Only those in the Assets in Scope table are considered as in-scope of the bug bounty program.

Though only the proxy contracts are listed as in-scope, current implementation and any further updates to the implementation contracts are considered in scope. When reporting a bug, please make sure to select the relevant proxy smart contract as the target.

If an impact can be caused to any other asset managed by Ankr that isn’t on this table but for which the impact is in the Impacts in Scope section below, you are encouraged to submit it for the consideration by the project. This only applies to Critical impacts.

The following vulnerabilities are excluded from the rewards for this bug bounty program:

• Attacks that the reporter has already exploited themselves, leading to damage
• Attacks requiring access to leaked keys/credentials
• Attacks requiring access to privileged addresses (governance, strategist)

Smart Contracts and Blockchain

• Incorrect data supplied by third party oracles
  • Not to exclude oracle manipulation/flash loan attacks
• Basic economic governance attacks (e.g. 51% attack)
• Lack of liquidity
• Best practice critiques
• Sybil attacks
• Centralization risks

Websites and Apps

• Theoretical vulnerabilities without any proof or demonstration
• Attacks requiring physical access to the victim device
• Attacks requiring access to the local network of the victim
• Reflected plain text injection ex: url parameters, path, etc.
  • This does not exclude reflected HTML injection with or without javascript
  • This does not exclude persistent plain text injection
• Self-XSS
• Captcha bypass using OCR without impact demonstration
• CSRF with no state modifying security impact (ex: logout CSRF)
• 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
• Vulnerabilities used only to enumerate or confirm the existence of users or tenants
• Vulnerabilities requiring un-prompted, in-app user actions that are not part of the normal app workflows
• Lack of SSL/TLS best practices
• DDoS vulnerabilities
• Feature requests
• Issues related to the frontend without concrete impact and PoC
• Best practices issues without concrete impact and PoC
• Vulnerabilities primarily caused by browser/plugin defects
• Leakage of non sensitive api keys ex: etherscan, Infura, Alchemy, etc.
• Any vulnerability exploit requiring browser bugs for exploitation. ex: CSP bypass

The following activities are prohibited by this bug bounty program:

• Any testing with mainnet or public testnet contracts; all testing should be done on private testnets
• Any testing with pricing oracles or third party smart contracts
• Attempting phishing or other social engineering attacks against our 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
• Automated testing of services that generates significant amounts of traffic
• Public disclosure of an unpatched vulnerability in an embargoed bounty