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BlockWallet

BlockWallet is the most private, non-custodial Ethereum browser wallet.

Avalanche
BSC
ETH
Fantom
Polygon
Defi
Wallet
JavaScript
Maximum Bounty
$150,000
Live Since
30 November 2021
Last Updated
08 April 2024
  • PoC required

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Assets in Scope

Target
Type
Websites and Applications
Added on
16 May 2022

Impacts in Scope

Severity
Critical
Title
Ability to execute system commands
Severity
Critical
Title
Extract Sensitive data/files from the server such as /etc/passwd
Severity
Critical
Title
Taking Down the application/website
Severity
Critical
Title
Stealing User Cookies
Severity
Critical
Title
Bypassing Authentication
Severity
Critical
Title
Signing transactions for other users
Severity
Critical
Title
Redirection of user deposits and withdrawals
Severity
Critical
Title
Subdomain takeover resulting in financial loss (applicable for subdomains with addresses published)
Severity
Critical
Title
Wallet interaction modification resulting in financial loss
Severity
Critical
Title
Direct theft of user funds
Severity
Critical
Title
Tampering with transactions submitted to the user’s wallet
Severity
Critical
Title
Submitting malicious transactions to an already-connected wallet

Out of scope

Program's Out of Scope information

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)
  • Attacks that require access to the user's machine or browser, physical or remote

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