17 February 2022
Live since
No
KYC required
$25,000
Maximum bounty

Program Overview

UniLend is a comprehensive permissionless DeFi protocol. Whereas other DeFi protocols support only a limited number of assets, anyone can list any asset on UniLend’s supported blockchains (currently Ethereum, Polygon, BSC and Moonriver) to access comprehensive DeFi functionality for those assets. This includes decentralized lending/borrowing, and the industry’s most cost-effective flash loans.

In addition to cryptocurrencies, UniLend will also support various synthetic real-world assets, NFTs and derivatives (including the major FAANG stocks and precious metals such as gold and silver).

For more information about UniLend, please visit https://unilend.finance/.

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

  • Loss of user funds staked (principal) by freezing or theft
  • Temporary freezing of funds for at least 24 hours
  • Unable to call smart contract
  • Smart contract gas drainage
  • Smart contract fails to deliver promised returns

Rewards by Threat Level

Rewards are distributed according to the impact of the vulnerability based on the Immunefi Vulnerability Severity Classification System V2. 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.

Critical and High smart contract 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. In addition, all Critical and High bug reports must also come with a suggestion for a fix in order to be considered for a reward.

All known issues highlighted in the following audit report are considered out of scope:

Payouts are handled by the Unilend team directly and are denominated in USD. However, payouts are done in UFT.

Smart Contract

Critical
Level
USD $25,000
Payout
PoC Required
High
Level
USD $15,000
Payout
PoC Required
Medium
Level
USD $5,000
Payout
Low
Level
USD $1,000
Payout

Assets in scope

All smart contracts of Unilend can be found at https://github.com/UniLend/unilendv2/. 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 Contract

  • Loss of user funds staked (principal) by freezing or theft
    Critical
    Impact
  • Temporary freezing of funds for at least 24 hours
    High
    Impact
  • Unable to call smart contract
    Medium
    Impact
  • Smart contract gas drainage
    Medium
    Impact
  • Smart contract fails to deliver promised returns
    Low
    Impact

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

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