Fei Protocol

Submit a Bug
30 March 2021
Live since
No
KYC required
$1,100,000
Maximum bounty

Program Overview

The goal of the Fei Protocol is to maintain a liquid market in which ETH/FEI trades closely to the ETH/USD price. FEI achieves this via a new stability mechanism known as direct incentives. Direct incentive stablecoins use dynamic mint rewards and burn penalties on DEX trade volume to maintain the peg. Governance can add and update DEX integrations and other incentives as needed, which uses the TRIBE governance token.

The bug bounty program is focused around its smart contracts and website and the prevention of the loss of user funds and the disruption of the governance system.

Rewards by Threat Level

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.

The following smart contract issues are known and reports including these vulnerabilities are not considered to be in scope of this bug bounty program and will not receive a reward:

  • FEI can be wrapped to avoid burn
  • Supplying LP incurs a burn and withdrawing earns a mint just like trading
  • Supplying LP before a reweight can increase PCV expense to Fei Protocol
  • Reweights can be dust attacked by repeated buying
  • Reweights can be front and back-run
  • The burn penalty over-penalizes by factoring the burn amount into price impact

All web and app bug reports must include a PoC in order for consideration of a reward. Web and app bug reports without a PoC will be rejected with instructions to provide one.

Critical-level smart contract vulnerabilities that result in the loss of user funds will have rewards additionally capped at 10% of the funds potentially affected based on the vulnerability that was identified. These rewards are additionally only payable in TRIBE and have a vesting schedule lasting between 6-12 months with a minimum of 6 months for rewards up to USD 400 000, with an additional month added for every USD 100 000 tranche, rounded up.

Payouts are handled by the Fei Protocol team directly and are denominated in USD. However, payouts are done in TRIBE or FEI. For Low and Medium threat levels, payouts can alternatively be in ETH or USDC.

Smart Contracts and Blockchain

Critical
Level
up to USD $1,100,000
Payout
high
Level
up to USD $40,000
Payout
medium
Level
up to USD $5,000
Payout
low
Level
up to USD $1,000
Payout
none
Level
USD $0
Payout

Web and Apps

Critical
Level
up to USD $15,000
Payout
high
Level
up to USD $10,000
Payout
medium
Level
up to USD $1,000
Payout
low
Level
USD $0
Payout
none
Level
USD $0
Payout

Assets in Scope

Prioritized Vulnerabilities

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

Smart Contracts/Blockchain:

  • Re-entrancy
  • Logic errors
    • including user authentication errors
  • Solidity/EVM details not considered
    • including integer over-/under-flow
    • 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

Web/App Vulnerabilities:

  • Remote Code Execution
  • Trusting trust/dependency vulnerabilities
  • Vertical Privilege Escalation
  • XML External Entities Injection
  • SQL Injection
  • LFI/RFI
  • Horizontal Privilege Escalation
  • Stored XSS
  • Reflective XSS with impact
  • CSRF with impact
  • Direct object reference
  • Internal SSRF
  • Session fixation
  • Insecure Deserialization
  • DOM XSS
  • SSL misconfigurations
  • SSL/TLS issues (weak crypto, improper setup)
  • URL redirect
  • Clickjacking (must be accompanied with PoC)
  • Misleading Unicode text (e.g. using right to left override characters)

Out of Scope & Rules

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

Websites and Apps

  • Theoretical vulnerabilities without any proof or demonstration
  • Content spoofing / Text injection issues
  • Self-XSS
  • Captcha bypass using OCR
  • CSRF with no security impact (logout CSRF, change language, etc.)
  • Missing HTTP Security Headers (such as X-FRAME-OPTIONS) or cookie security flags (such as “httponly”)
  • Server-side information disclosure such as IPs, server names, and most stack traces
  • Vulnerabilities used to enumerate or confirm the existence of users or tenants
  • Vulnerabilities requiring unlikely user actions
  • URL Redirects (unless combined with another vulnerability to produce a more severe vulnerability)
  • Lack of SSL/TLS best practices
  • DDoS vulnerabilities
  • Attacks requiring privileged access from within the organization
  • Feature requests
  • Best practices

The following activities are prohibited by 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