Talenta_audit_report.md

Talenta Audit Report.

1. Summary

This document is a security audit report performed by danbogd, where Talenta has been reviewed.

2. In scope

• BasicToken.sol.
• ERC20.sol.
• ERC20Basic.sol.
• MintableToken.sol.
• OpetEscrow.sol.
• Ownable.sol.
• SafeERC20.sol.
• SafeMath.sol.
• StandardToken.sol.
• TestToken.sol.

3. Findings

2 issues were reported including:

• 1 low severity issues.

• 1 minor remark.

3.1. Known Issues of ERC20 Standard.

Severity: low

Description

Description ERC20 Tokens have some well-known issues (listed bellow), This is just a reminder for the contract developers.

Approve + transferFrom mechanism allows double Withdrawal attack. Lack of transaction handling. The above mentioned issues are well documented, a basic search can help to get more information.

3.2. Extra checking.

Severity: minor

Description

Extra checking in 33 line of BasicToken contract. SafeMath library checks it anyway.

Code snippet

    require(_value <= balances[msg.sender]);
    

Recommendation

This line may be deleted.

4. Conclusion

No critical vulnerabilities were detected,but we highly recommend to complete this bugs before use.