CVE-2018-11239 : Exploit Details and Defense Strategies
Learn about CVE-2018-11239, a vulnerability in the Hexagon (HXG) smart contract allowing unauthorized asset manipulation. Find mitigation steps and prevention measures here.
Hexagon (HXG) smart contract vulnerability allows unauthorized increase of digital assets.
Understanding CVE-2018-11239
What is CVE-2018-11239?
The smart contract implementation for Hexagon (HXG), an Ethereum ERC20 token, is susceptible to an integer overflow in its _transfer function. This flaw enables attackers to inflate their digital assets without permission by providing a large _value argument along with a _to argument.
The Impact of CVE-2018-11239
This issue, known as the "burnOverflow" problem, was exploited in May 2018, allowing unauthorized asset manipulation.
Technical Details of CVE-2018-11239
Vulnerability Description
An integer overflow in the _transfer function of the Hexagon (HXG) smart contract permits unauthorized asset increase.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
The vulnerability allows attackers to manipulate digital assets by exploiting the _transfer function with specific arguments.
Mitigation and Prevention
Immediate Steps to Take
- Audit smart contracts for integer overflow vulnerabilities
- Implement input validation to prevent unauthorized asset manipulation
Long-Term Security Practices
- Regularly monitor and update smart contracts for security flaws
- Educate developers on secure coding practices
Patching and Updates
Apply patches and updates provided by the Hexagon (HXG) smart contract maintainers to address the integer overflow vulnerability.