Hundred Finance

Submit a Bug
07 January 2022
Live since
No
KYC required
$50,000
Maximum bounty

Program Overview

Hundred Finance is a decentralized application (dApp) that enables the lending and borrowing of cryptocurrencies. A multi-chain protocol, it integrates with Chainlink oracles to ensure market health and stability, while specializing in providing markets for long-tail assets.

For more information about Hundred Finance, please visit https://hundred.finance/.

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
  • Theft of governance funds
  • Governance activity disruption
  • Redirected funds by address modification

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.

All web/app bug reports must come with a PoC in order to be considered for a reward.

In addition to Immunefi’s Vulnerability Severity Classification System, Hundred Finance classifies the following vulnerabilities as follows. In case of discrepancy, the one below will be followed.

Critical

  • Allow attacker(s) to remove tokens equal to at least 10% of the dollar value of the aggregate value of all those in the system.
  • May be applied to a real situation and triggered through an attack vector rather than theory or hypothesis.
  • Occur in operation mode or emergency shutdown mode, excluding those occurring during or shortly after the protocols deployment (a period during which the system is yet to be fully activated).

Payouts are handled by the Hundred Finance team directly and are denominated in USD. However, payouts are done in USDC.

Smart Contracts and Blockchain

Critical
Level
USD $50,000
Payout
high
Level
USD $10,000
Payout
medium
Level
USD $4,000
Payout
low
Level
USD $1,000
Payout

Web and Apps

Critical
Level
USD $50,000
Payout
high
Level
USD $10,000
Payout
medium
Level
USD $4,000
Payout
low
Level
USD $1,000
Payout

Assets in Scope

Only those in the Assets in Scope table are considered as in-scope of the bug bounty program. For Hundred Finance smart contracts (multiple instances on different chains), there will not be duplicated counting of bugs. One bug that exists in all contracts will be counted as a single bug.

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

  • Loss of user funds staked (principal) by freezing or theft
  • Unable to call smart contract
  • Vote manipulation
  • Theft of unclaimed yield

Web/App

  • Redirected funds by address modification
Smart Contract - Comptroller Storage ARBI
Type
Smart Contract - Comptroller Implementation ARBI
Type
Smart Contract - Chainlink Price Oracle Proxy ARBI
Type
Smart Contract - HND Token ARBI
Type
Smart Contract - hUSDC ARBI
Type
Smart Contract - hToken implementation ARBI
Type
Smart Contract - hETH ARBI
Type
Smart Contract - hWBTC ARBI
Type
Smart Contract - hUSDT ARBI
Type
Smart Contract - hLINK ARBI
Type
Smart Contract - hSUSHI ARBI
Type
Smart Contract - hMIM ARBI
Type
Smart Contract - hSPELL ARBI
Type
Smart Contract - hDODO ARBI
Type
Smart Contract - hFRAX ARBI
Type
Stables Interest Rate Model ARBI
Type
Blue Chips Interest Rate Model ARBI
Type
Smart Contract - hUSDC Gauge ARBI
Type
Smart Contract - hUSDT Gauge ARBI
Type
Smart Contract - hMIM Gauge ARBI
Type
Smart Contract - hFRAX Gauge ARBI
Type
Smart Contract - VotingEscrow ARBI
Type
Smart Contract - Treasury ARBI
Type
Smart Contract - RewardPolicyMaker ARBI
Type
Smart Contract - GaugeController ARBI
Type
Smart Contract - Minter ARBI
Type
Smart Contract - Comptroller Storage FTM
Type
Smart Contract - Comptroller Implementation FTM
Type
Smart Contract - Chainlink Price Oracle Proxy FTM
Type
Smart Contract - HND Token FTM
Type
Smart Contract - hFTM FTM
Type
Smart Contract - hToken implementation FTM
Type
Smart Contract - hUSDT FTM
Type
Smart Contract - hSPELL FTM
Type
Smart Contract - hSUSHI FTM
Type
Smart Contract - hBNB FTM
Type
Smart Contract - hhUSDC FTM
Type
Smart Contract - hFRAX FTM
Type
Smart Contract - hWBTC FTM
Type
Smart Contract - hAAVE FTM
Type
Smart Contract - hDAI FTM
Type
Smart Contract - hETH FTM
Type
Smart Contract - hMIM FTM
Type
Smart Contract - hLINK FTM
Type
Smart Contract - hYFI FTM
Type
Smart Contract - hCRV FTM
Type
Smart Contract - Stables Interest Rate Model FTM
Type
Smart Contract - Blue Chips Interest Rate Model FTM
Type
Smart Contract - hUSDC Gauge FTM
Type
Smart Contract - hUSDT Gauge FTM
Type
Smart Contract - hMIM Gauge FTM
Type
Smart Contract - hFRAX Gauge FTM
Type
Smart Contract - hDAI Gauge FTM
Type
Smart Contract - VotingEscrow FTM
Type
Smart Contract - Treasury FTM
Type
Smart Contract - RewardPolicyMaker FTM
Type
Smart Contract - GaugeController FTM
Type
Smart Contract - Minter FTM
Type
Web/App - Main Web App
Type
Web/App - Vote
Type

Prioritized Vulnerabilities

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

Websites and Apps

  • 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
  • Centralization risks

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 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