Security Audit Remediation - Fix All 10 Issues #24
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- Fix L44: Zeroize temporary private key bytes in wallet.new() - Fix L106: Zeroize plaintext after decryption in decrypt_private_key() - Fix L34: Add Drop trait for WalletData to zeroize api_key - Fix L74: Zeroize private_key string in transfer command - Fix L100,L181,L330: Zeroize password strings in interactive flows - Fix L143,L340: Zeroize private_key strings in interactive flows - Fix L22,L25,L27: Add Drop trait for WalletAction enum Addresses Issue 9 - Missing zeroization points for sensitive data
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Summary
Resolves all security vulnerabilities identified in the internal security audit.
Key Fixes
• File Security: Wallet files now use 0o600 permissions (user-only access)
• Memory Safety: Added zeroize crate to securely clear sensitive data from
memory
• Command Injection: Replaced system clear with crossterm crate
• Encryption: Upgraded from AES-CBC to AES-GCM with authentication
• Dependencies: Updated 3 unmaintained packages to secure alternatives
• Project Name: Updated from "rootstock-wallet" to "rsk-rust-cli"
Additional Improvements
• Added password strength validation
• Fixed backup path handling
• Replaced floating-point with string-based amount parsing
• Removed dead code
Testing
• [x] All tests pass
• [x] Zero security vulnerabilities remaining
• [x] Cross-platform compatibility verified