ETH_Aurora_report.md

Summary

This is the report from a security audit performed on Aurora by MrCrambo.

The audit focused primarily on the security of Aurora smart contract.

In scope

1. https://etherscan.io/address/0x9ab165d795019b6d8b3e971dda91071421305e5a#contracts

Findings

In total, 4 issues were reported including:

• 0 high severity issues.

• 1 medium severity issues.

• 0 owner privilegies issues.

• 2 low severity issues.

• 1 notes.

Security issues

1. Zero address chekcing

Severity: low

Description

There are no zero address checking in functions transfer and transferFrom.

2. Known vulnerabilities of ERC-20 token

Severity: low

Description

1. It is possible to double withdrawal attack. More details here
2. Lack of transaction handling mechanism issue. More details here

Recommendation

Add into a function transfer(address _to, ... ) following code:

require( _to != address(this) );

3. Wrong transfering

Severity: medium

Description

Functions transfer and transferFrom return false instead of throwing, in case of transfer failing.

4. No event call

Severity: note

Description

There is no event call in constructor where all funds sent to the owner.

Conclusion

Smart contract contains medium severity issue.