CVE-2018-13740 : What You Need to Know

In the implementation of a smart contract for OneChain, an Ethereum token, a flaw in the mintToken function allows the contract owner to manipulate user balances through an integer overflow.

Understanding CVE-2018-13740

This CVE involves a vulnerability in the mintToken function of a smart contract for OneChain, enabling unauthorized balance modifications.

What is CVE-2018-13740?

The flaw in the mintToken function of the OneChain smart contract permits the contract owner to adjust any user's balance to a desired value due to an integer overflow.

The Impact of CVE-2018-13740

The vulnerability allows malicious actors to manipulate user balances, potentially leading to financial losses and unauthorized transactions.

Technical Details of CVE-2018-13740

This section provides in-depth technical insights into the CVE.

Vulnerability Description

The mintToken function in the OneChain smart contract suffers from an integer overflow, granting the contract owner unauthorized control over user balances.

Affected Systems and Versions

Affected Systems: OneChain smart contract implementation
Affected Versions: All versions are susceptible to this vulnerability

Exploitation Mechanism

The flaw arises from an integer overflow in the mintToken function, enabling the contract owner to modify user balances at will.

Mitigation and Prevention

Protecting systems from CVE-2018-13740 requires immediate actions and long-term security measures.

Immediate Steps to Take

Audit and update the smart contract code to fix the integer overflow issue
Monitor user balances for any unauthorized changes

Long-Term Security Practices

Implement secure coding practices to prevent integer overflow vulnerabilities
Conduct regular security audits and code reviews to identify and address potential weaknesses

Patching and Updates

Apply patches or updates provided by the smart contract developer to address the vulnerability