BiFi

BiFi is the Multichain DeFi Project built on BIFROST, the Universal Multichain Middleware. BiFi aims to create a decentralized financial infrastructure that connects all the capital markets currently isolated on each blockchain, and creates new products and services that interoperate across multiple blockchains.

This bug bounty program is focused on their smart contracts and app and is focused on preventing:

• Thefts and freezing of principal of any amount
• Thefts and freezing of unclaimed yield of any amount
• Thefts and freezing of governance funds
• Thefts and freezing of permission among contracts
• Manipulations of the contract functionality (DoS, Malicious Re-entrancy, etc.)

Rewards are distributed according to the impact of the vulnerability based on the Immunefi Vulnerability Severity Classification System. This is a simplified 5-level scale, with separate scales for websites/apps and smart contracts/blockchains, encompassing everything from consequence of exploitation to privilege required to likelihood of a successful exploit.

All High and Critical Smart Contract bug reports require a PoC to be eligible for a reward.

The following vulnerabilities are not eligible for a reward:

• Using a single on-chain price oracle as a price feed source (e.g., Uniswap, Sushiswap)

Payouts are handled by the BiFi team directly and are denominated in USD. However, payouts are done in BFC, ETH, Stablecoin (USDT or USDC) with the choice of the ratio at the discretion of the team.

All smart contracts of Bifi can be found at https://github.com/bifrost-platform/BIFI. However, only those in the Assets in Scope table are considered as in-scope of the bug bounty program.

Impacts in Scope

Only the following impacts are accepted within this bug bounty program. All other impacts are not considered as in-scope, even if they affect something in the assets in scope table.

Smart Contracts/Blockchain

• Thefts and freezing of principal of any amount
• Thefts and freezing of unclaimed yield of any amount
• Thefts and freezing of governance funds
• Thefts and freezing of permission among contracts
• Manipulations of the contract functionality (DoS, Malicious Re-entrancy, etc.)

We are especially interested in receiving and rewarding vulnerabilities of the following types:

Smart Contracts and Blockchain

• Re-entrancy
• Logic errors
  • including user authentication errors
• Solidity/EVM details not considered
  • including integer over-/under-flow
  • including rounding errors
  • including unhandled exceptions
• Trusting trust/dependency vulnerabilities
  • including composability vulnerabilities
• Oracle failure/manipulation
• Novel governance attacks
• Economic/financial attacks
  • including flash loan attacks
• Congestion and scalability
  • including running out of gas
  • including block stuffing
  • including susceptibility to frontrunning
• Consensus failures
• Cryptography problems
  • Signature malleability
  • Susceptibility to replay attacks
  • Weak randomness
  • Weak encryption
• Susceptibility to block timestamp manipulation
• Missing access controls / unprotected internal or debugging interfaces

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

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