08 January 2022
Live since
Yes
KYC required
$250,000
Maximum bounty

Program Overview

Kadena was founded on the idea that blockchain could revolutionize how the world interacts and transacts. But to get to mass adoption, chain technology and the ecosystem connecting it to the business world needed to be reimagined from the ground up. Our founders built a proprietary chain architecture and created the tools to make blockchain work for business – at speed, scale, and energy efficiency previously thought unachievable.

For more information about Kadena, please visit https://kadena.io/.

This bug bounty program is focused on their smart contracts, blockchain, websites and application and is focused on preventing:

  • Network Shutdown
  • Website goes down
  • DoS attacks on node software

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. All Medium, High and Critical Smart Contract bug reports require a PoC to be eligible for a reward.

The following vulnerabilities are not eligible for a reward:

  • Congestion and scalability vulnerabilities

Payouts are handled by the Kadena team directly and are denominated in USD. However, payouts are done in KDA and stablecoins, with the choice of the ratio at the discretion of the team. In addition, as part of claiming a bug bounty, whitehats must complete a KYC process by creating an account on Coinmetro.

Smart Contract

Critical
Level
USD $250,000
Payout
PoC Required
High
Level
USD $10,000
Payout
PoC Required
Medium
Level
USD $1,000
Payout
PoC Required

Websites and Applications

Critical
Level
USD $250,000
Payout
PoC Required
High
Level
USD $10,000
Payout
PoC Required
Medium
Level
USD $1,000
Payout
PoC Required

Assets in scope

All smart contracts of Kadena can be found at https://github.com/kadena-io. However, only those in the Assets in Scope table are considered as in-scope of the bug bounty program.

Kadena’s API specification can be found at https://api.chainweb.com/openapi/

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.

Blockchain/DLT

  • Network not being able to confirm new transactions (Total network shutdown)
    Critical
    Impact
  • Exploits via P2P API requests - Manipulating the content of the Pact (sqlite) database of a node such that those are not consistent with block validation results
    Critical
    Impact
  • Unintended permanent chain split requiring hard fork (Network partition requiring hard fork)
    Critical
    Impact
  • Permanent freezing of funds (fix requires hardfork)
    Critical
    Impact
  • Direct loss of funds
    Critical
    Impact
  • RPC API crash
    Critical
    Impact
  • Exploits via P2P API requests - Causing permanent network forks of a larger number (>25%) of independent nodes in the network
    Critical
    Impact
  • Network shut down where network stops processing blocks
    Critical
    Impact
  • Unintended chain split (Network partition)
    High
    Impact
  • Transient consensus failures
    High
    Impact
  • Exploits via P2P API requests - Manipulating the content of the chain database (rocksdb) of a node
    High
    Impact
  • Exploits via P2P API requests - Deleting (or partially deleting) the Pact (sqlite) data of a node
    High
    Impact
  • Exploits via P2P API requests - Deleting (or partially deleting) the content of the chain database (rocksdb) of a node
    High
    Impact
  • Exploits via P2P API requests - Causing lasting (longer than several minutes) network partitions
    High
    Impact
  • Exploits via P2P API requests - Preventing a larger number independent nodes from processing new valid blocks
    High
    Impact
  • Exploits via P2P API requests - Causing forks in the network that are supported by a larger number of independent nodes that persist longer than just a few dozen block in depths
    High
    Impact
  • Exploits via P2P API requests - Crashing a larger number of independent nodes
    High
    Impact
  • High compute consumption by validator/mining nodes
    Medium
    Impact
  • Attacks against thin clients
    Medium
    Impact
  • Exploits via P2P API requests - Permanently preventing nodes from processing any transactions
    Medium
    Impact
  • DoS of greater than 30% of validator or miner nodes and does not shut down the network
    Medium
    Impact
  • Exploits via P2P API requests - Preventing individual nodes from processing new valid blocks
    Medium
    Impact
  • Exploits via P2P API requests - Permanently preventing mining nodes from including transactions into blocks
    Medium
    Impact
  • Exploits via P2P API requests - Crashing individual nodes
    Medium
    Impact
  • DoS of greater than 10% but less than 30% of validator or miner nodes and does not shut down the network
    Low
    Impact
  • Underpricing transaction fees relative to computation time
    Low
    Impact
  • Exploits via the service API - Crashing nodes via the service API endpoints
    Low
    Impact
  • Exploits via P2P API requests - Preventing particular txs from being included into blocks
    Low
    Impact

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
  • Insolvency
    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 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
  • Miner-extractable value (MEV)
    Low
    Impact
  • Smart contract fails to deliver promised returns, but doesn’t lose value
    Low
    Impact

Websites and Applications

  • Execute arbitrary system commands
    Critical
    Impact
  • Retrieve sensitive data/files from a running server such as /etc/shadow, database passwords, and blockchain keys(this does not include non-sensitive environment variables, open source code, or usernames)
    Critical
    Impact
  • Taking down the application/website
    Critical
    Impact
  • Taking state-modifying authenticated actions (with or without blockchain state interaction) on behalf of other users without any interaction by that user, such as, changing registration information, commenting, voting, making trades, withdrawals, etc.
    Critical
    Impact
  • Malicious interactions with an already-connected wallet such as modifying transaction arguments or parameters, substituting contract addresses, submitting malicious transactions
    Critical
    Impact
  • Subdomain takeover with already-connected wallet interaction
    Critical
    Impact
  • Direct theft of user funds
    Critical
    Impact
  • Leak of private keys
    Critical
    Impact
  • Redirected funds by address modification
    Critical
    Impact
  • Injecting/modifying the static content on the target application without Javascript (Persistent) such as HTML injection without Javascript, replacing existing text with arbitrary text, arbitrary file uploads, etc.
    High
    Impact
  • Changing sensitive details of other users (including modifying browser local storage) without already-connected wallet interaction and with up to one click of user interaction, such as email or password of the victim, etc.
    High
    Impact
  • Improperly disclosing confidential user information such as email address, phone number, physical address, etc.
    High
    Impact
  • Subdomain takeover without already-connected wallet interaction
    High
    Impact
  • Changing non-sensitive details of other users (including modifying browser local storage) without already-connected wallet interaction and with up to one click of user interaction, such as changing the first/last name of user, or en/disabling notification
    Medium
    Impact
  • Injecting/modifying the static content on the target application without Javascript (Reflected) such as reflected HTML injection or loading external site data
    Medium
    Impact
  • Redirecting users to malicious websites (Open Redirect)
    Medium
    Impact
  • Changing details of other users (including modifying browser local storage) without already-connected wallet interaction and with significant user interaction such as iframing leading to modifying the backend/browser state (demonstrate impact with PoC)
    Low
    Impact
  • Taking over broken or expired outgoing links such as social media handles, etc.
    Low
    Impact
  • Any impact involving a publicly released CVE without a working PoC
    Low
    Impact
  • Temporarily disabling user to access target site, such as locking up the victim from login, cookie bombing, etc.
    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

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