CVE-2021-3004 : Exploit Details and Defense Strategies

A smart contract vulnerability in Stable Yield Credit (yCREDIT) has been identified in Ethereum, allowing attackers to manipulate calculations and obtain more yCREDIT tokens illicitly.

Understanding CVE-2021-3004

This section delves into the critical aspects of the CVE-2021-3004 vulnerability.

What is CVE-2021-3004?

The _deposit function in the smart contract implementation for Stable Yield Credit (yCREDIT) has certain incorrect calculations, enabling attackers to acquire additional yCREDIT tokens beyond their entitlement.

The Impact of CVE-2021-3004

The vulnerability poses a significant risk as bad actors exploit the flaw to gain unauthorized yCREDIT tokens, potentially leading to financial loss and a compromised token economy.

Technical Details of CVE-2021-3004

Explore the technical specifics of the CVE-2021-3004 vulnerability in this section.

Vulnerability Description

The issue lies in the incorrect calculations within the _deposit function of the yCREDIT smart contract, providing a loophole for attackers to manipulate and acquire more tokens than intended.

Affected Systems and Versions

All versions of the yCREDIT implementation are susceptible to this vulnerability, thereby putting users of the Ethereum token at risk.

Exploitation Mechanism

Attackers can exploit the flawed _deposit function to execute unauthorized transactions and obtain extra yCREDIT tokens by manipulating the flawed calculations.

Mitigation and Prevention

Discover the steps to mitigate the risks associated with CVE-2021-3004 in this section.

Immediate Steps to Take

Users are advised to halt transactions involving yCREDIT tokens immediately and monitor their accounts for any suspicious activity, while developers should patch the vulnerability promptly.

Long-Term Security Practices

Implement robust security protocols, conduct regular code audits, and stay updated with the latest security patches to fortify the smart contract against potential vulnerabilities.

Patching and Updates

It is crucial for developers to release a patched version of the yCREDIT smart contract with corrected calculations to prevent further exploitation of the vulnerability.