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Babylon Labs

Babylon introduces a new major utility for Bitcoin: trustless and self-custodial staking. The Babylon Bitcoin staking protocol turns Bitcoin into a stakable and slashable asset for any Proof-of-Stake systems. This allows Bitcoin HODLERs to hold their Bitcoins while earning staking rewards from the PoS systems for the slashable security they provide, in the same way as how native PoS token staking works.

Bitcoin
Infrastructure
Staking
Go
Typescript
JavaScript
Rust
Maximum Bounty
$2,000,000
Live Since
16 September 2024
Last Updated
09 April 2025
  • Triaged by Immunefi

  • PoC Required

  • KYC required

  • Arbitration enabled

Select the category you'd like to explore

Assets in Scope

Target
Type
Websites and Applications - Babylon Genesis and Bitcoin Indexer
Added on
9 April 2025
Target
Type
Websites and Applications - Staking API Service
Added on
9 April 2025
Target
Type
Websites and Applications - Staking dApp
Added on
9 April 2025
Target
Type
Websites and Applications - Core UI
Added on
9 April 2025
Target
Type
Websites and Applications - Wallet Connect
Added on
9 April 2025
Target
Type
Websites and Applications - Babylon Proto Libraries
Added on
9 April 2025
Target
Primacy Of Impact
Type
Websites and Applications
Added on
9 April 2025
Target
Type
Blockchain/DLT - Babylon Chain
Added on
9 April 2025
Target
Type
Blockchain/DLT - Vigilante
Added on
9 April 2025
Target
Type
Blockchain/DLT - Covenant Emulator
Added on
9 April 2025
Target
Type
Blockchain/DLT - BTC Staker CLI
Added on
9 April 2025
Target
Type
Blockchain/DLT - Finality Provider Tool Set
Added on
9 April 2025

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.

For the Unbonding Pipeline Process, the following code components and branches are in-scope:

Everything here https://github.com/babylonlabs-io/cli-tools/blob/v0.2.x/, except the following test commands:

Severity
Critical
Title

Direct loss of funds

Severity
Critical
Title

Permanent freezing of funds

Severity
Critical
Title

Execute arbitrary system commands

Severity
Critical
Title

Retrieve the private key of a covenant committee member

Severity
Critical
Title

Leakage of EOTS private keys without the holder double-signing

Severity
Critical
Title

Chain halt for 24h

Severity
Critical
Title

Permanently halting the Bitcoin Staking finalization of new blocks without ability to recover.

Severity
Critical
Title

Retrieve sensitive data/files from a running server, such as: /etc/shadow database passwords blockchain keys This does not include non-sensitive environment variables, open source code, or usernames etc with no operational impact.

Severity
Critical
Title

Taking state-modifying authenticated actions (with or without blockchain state interaction) on behalf of other users without any interaction by that user, such as: Making trades

Severity
Critical
Title

Subdomain takeover with already-connected wallet interaction

Severity
Critical
Title

Direct theft of user funds or causing their freezing

Severity
Critical
Title

Malicious interactions with an already-connected wallet without user interaction, such as: Modifying transaction arguments or parameters Submitting malicious transactions

Out of scope

Program's Out of Scope information

Additional Blockchain/DLT Specific:

  • Impacts involving centralization risks
  • Impacts involving Bitcoin not being live or safe.
  • Impacts involving the Babylon validator set not being live or safe.
  • Impacts involving the temporary downtime of relayers between Babylon and Bitcoin.
  • Impacts involving the submission of a large number of transactions to the Bitcoin ledger and their delayed inclusion.
  • Impacts involving >=⅓ malicious finality voting power.
  • Impacts involving >= ⅓ malicious CometBFT voting power.
  • Impacts involving a quorum of the covenant committee being malicious.
  • Impacts preventing a quorum of the covenant committee to be reached due to a full quorum not being live.
  • Impacts involving the confirmation depth and finalization timeout parameters being set to an improperly low value.
  • Impacts involving a user’s staking transaction being included in a Bitcoin block in which different Bitcoin staking parameters than the ones the user used apply.

Prohibited Activities:

  • Any testing on mainnet or public testnet deployed code; all testing should be done on local-forks of either public testnet or mainnet
  • Any testing with pricing oracles, third-party smart contracts or cloud services
  • Attempting phishing or other social engineering attacks against our employees, and/or customers, service providers and community members
  • 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 that are executed against project assets
  • Automated testing of services that generates significant amounts of traffic
  • Public disclosure of an unpatched vulnerability in an embargoed bounty
Default Out of Scope and rules

Blockchain/DLT specific

  • Incorrect data supplied by third party oracles
    • Not to exclude oracle manipulation/flash loan attacks
  • Impacts requiring basic economic and governance attacks (e.g. 51% attack)
  • Lack of liquidity impacts
  • Impacts from Sybil attacks
  • Impacts involving centralization risks

All categories

  • Impacts requiring attacks that the reporter has already exploited themselves, leading to damage
  • Impacts caused by attacks requiring access to leaked keys/credentials
  • Impacts caused by attacks requiring access to privileged addresses (including, but not limited to: governance and strategist contracts) without additional modifications to the privileges attributed
  • Impacts relying on attacks involving the depegging of an external stablecoin where the attacker does not directly cause the depegging due to a bug in code
  • Mentions of secrets, access tokens, API keys, private keys, etc. in Github will be considered out of scope without proof that they are in-use in production
  • Best practice recommendations
  • Feature requests
  • Impacts on test files and configuration files unless stated otherwise in the bug bounty program
  • Impacts requiring phishing or other social engineering attacks against project's employees and/or customers