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Stacks

During a planned network upgrade, and with a 3 month window after the last hard fork is released, we’ve lowered the payouts for all classes of bug reports. This is a temporary measure as we work out any undiscovered bugs in our testing during this network transition. We still welcome reports during this transition, but be aware there will likely be a reduced payout until the network upgrade is finalized.

Stacks
Bitcoin
Blockchain
L1
Rust
Bitcoin Script
Clarity
Maximum Bounty
$100,000
Live Since
31 March 2022
Last Updated
03 December 2024
  • PoC required

  • KYC required

Select the category you'd like to explore

Assets in Scope

Target
Type
Smart Contract - Blockchain shared libraries
Added on
15 April 2024
Target
Type
Blockchain/DLT - Node implementation
Added on
10 May 2022
Target
Type
Blockchain/DLT - Main Repository
Added on
10 May 2022
Target
Type
Smart Contract - Costs contract
Added on
10 May 2022
Target
Type
Smart Contract - Lockup contract
Added on
10 May 2022
Target
Type
Smart Contract - POX contract
Added on
10 May 2022
Target
Type
Smart Contract - BNS contract
Added on
10 May 2022

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.

Please note that all variants of remote denial-of-service attacks will automatically have their impact set to “Low”, regardless of any further downstream impact.

Please review open PRs before your submission as all duplicate attacks are considered “Out of Scope” as per below.

Severity
Critical
Title

Any network to shut down or otherwise not confirm new valid transactions for multiple blocks

Severity
Critical
Title

Any triggering of a deep fork of 10 or more blocks without spending the requisite Bitcoin

Severity
Critical
Title

Any causing the direct loss of funds other than through any form of freezing

Severity
Critical
Title

Any chain split caused by different nodes processing the same block or transaction and yielding different results

Severity
Critical
Title

Any confirmation of an invalid transaction, such as with an incorrect nonce

Severity
Critical
Title

Any loss of user funds by permanent freezing or theft

Severity
Critical
Title

Any loss of governance funds (limited to .cost-vote)

Severity
Critical
Title

Any governance vote manipulation

Severity
High
Title

Any unintended chain split or network partition

Severity
High
Title

Any remotely-exploitable memory access, disk access, or persistent code execution. Attacks are restricted to the Stacks blockchain RPC/P2P ports

Severity
High
Title

Any theft of an unclaimed reward

Severity
High
Title

Any permanent freezing of an unclaimed reward

Out of scope

Program's Out of Scope information
  • Any attacks on 3rd party services, including but not limited to AWS or Datadog.
    • Any sub-optimal default configuration changes.

    • Any phishing, social engineering, or related attacks against the Stacks ecosystem or any members or customers thereof.

    • Any reporting of findings that are already public or known to us, including but not limited to: open Github PRs and issues; previous findings reported by other researchers; findings discovered during currently-active third-party security assessments; and duplicated results of concluded assessments as posted here: https://stacks.org/audits. Novel methods of attack leading to an already-documented impact are allowed.

    • Any testing of third-party components.

      • If it’s not listed as in-scope, it’s safe to assume you shouldn’t be testing or relying on it.
      • If you disagree, feel free to explain why in your submission but DO NOT continue testing with our explicit written approval.
    • (If applicable to funds) Any actual theft or freeze of funds.

    • Any findings requiring access to or the cooperation of a Bitcoin miner.

    • Any theoretical attacks without substantial evidence and supporting documentation.

    • Any failure to provide any information requested in the above reporting template.

    • Any failure to use the given public GPG key to encrypt sensitive information.

    • Any negative or hostile behavior towards the Stacks ecosystem or members thereof, including but not limited to abuse of the ImmuneFi mediation process, initiation of direct contact with any Stacks ecosystem member via any communications method outside of ImmuneFi, and any form of coercion, harassment, threats, intimidation, stalking, or extortion.

      • This also includes repeatedly asking for multiple status updates - we promise we have eyes on your report.
    • Any automated scanner findings or fuzz test results without an associated functional proof-of-concept.

    • Any testing on mainnet or public testnet beyond the absolute minimum required to prove that your finding exists on them.

    • Any active exploitation of a reported vulnerability beyond the absolute minimum required to prove the validity of your proof-of-concept code.

      • You must not attack any other users under any circumstances. Test on your own addresses or contracts.
    • Any public disclosure of a reported issue, including via CVE number assignment.

    • Any failure to abide by any rules, requirements, or obligations as detailed above.

Default Out of Scope and rules

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
Severity
Min. - Max.
Critical
$100k
High
$5k
Medium
$1k
Low
$100
Total Assets in Scope
7
Total Impacts in Scope
19
Total paid

1.0M