OpenZeppelin

Submit a Bug
15 November 2021
Live since
Yes
KYC required
$25,000
Maximum bounty
25 March 2024
Last updated

Program Overview

As the premier crypto cybersecurity technology and services company, we’ve built OpenZeppelin Contracts with our best security practices. We are committed to ensuring the utmost security in our community-vetted smart contracts, and our bounty program provides rewards of up to $25,000 USD for reporting critical vulnerabilities in our smart contracts library. This bug bounty program is focused on OpenZeppelin Contracts and mainly intends to prevent:

Loss of funds by freezing another user’s funds, or theft of another user’s funds Permanent denial of service (smart contract is made unable to operate) Access control bypass, including privilege escalation Smart contract not behaving as intended

This is an overlay bug bounty program for OpenZeppelin’s Contracts library. A vulnerability in an OpenZeppelin contract would likely affect many other projects and could trigger various other bounties. This program would be potentially additive to those cases.

OpenZeppelin may issue GHSA/CVEs for reported vulnerabilities and will offer to credit issue reports in those public reports.

KYC Requirements

OpenZeppelin’s bug bounty program requires an invoice to be submitted and a KYC screen to be performed prior to OpenZeppelin providing a bug bounty reward. Once a payout is confirmed, a member of OpenZeppelin will reach out to you directly to collect the necessary information, including:

  • Full Legal Name
  • Email Address
  • Mailing Address
  • Wallet Address (Ethereum Mainnet Only)

Rewards by Threat Level

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 and smart contracts/blockchains, encompassing everything from consequence of exploitation to privilege required to likelihood of a successful exploit.

The rewards stated here are additive to any existing bug bounty programs hosted by projects that are currently using OpenZeppelin contracts.

Bounty rewards are given according to an impact/likelihood matrix for assessing threat levels. Each issue is assessed considering the likelihood of the vulnerability being successfully exploited and the expected impact in scope to a single instance of the affected smart contract.

Critical severity bug reports must come with a PoC in order to be considered for a reward.

Bugs introduced by a release candidate version and reported during the review period - within three weeks of the version release in GitHub, will receive a 50% bonus.

Payouts are handled by the OpenZeppelin team directly and are denominated in USD. However, payouts are done in ETH or USDC.

Smart Contract

Critical
Level
USD $25,000
Payout
PoC Required
High
Level
USD $5,000
Payout
Medium
Level
USD $2,500
Payout
Low
Level
USD $1,000
Payout

Assets in scope

All smart contracts in the “contracts” directory are included in the bug bounty, except those under “contracts/mocks”, which are testing artifacts.

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

  • Any governance voting result manipulation
    Critical
    Impact
  • Direct theft of any user funds, whether at-rest or in-motion, other than unclaimed yield
    Critical
    Impact
  • Permanent freezing of funds
    Critical
    Impact
  • Miner-extractable value (MEV)
    Critical
    Impact
  • Protocol Insolvency
    Critical
    Impact
  • Access control is bypassed, including privilege escalation
    Critical
    Impact
  • Denial of service (smart contract is made unable to operate)
    Critical
    Impact
  • Theft of unclaimed yield
    High
    Impact
  • Permanent freezing of unclaimed yield
    High
    Impact
  • Temporary freezing of funds
    High
    Impact
  • Smart contract unable to operate due to lack of token funds
    Medium
    Impact
  • Block stuffing for profit
    Medium
    Impact
  • Griefing (e.g. no profit motive for an attacker, but damage to the users or the protocol)
    Medium
    Impact
  • Theft of gas
    Medium
    Impact
  • Unbounded gas consumption
    Medium
    Impact
  • Contract fails to deliver promised returns, but doesn't lose value
    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)
  • Susceptibility to block timestamp manipulation
  • 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