CVE-2018-17987 : Vulnerability Insights and Analysis

In the smart contract implementation of HashHeroes Tiles, a vulnerability allows an attacker to manipulate the outcome of the prize by being the last person to purchase a tile.

Understanding CVE-2018-17987

In this CVE, a flaw in the determineWinner function of HashHeroes Tiles enables an attacker to control the prize outcome.

What is CVE-2018-17987?

The determineWinner function in the smart contract attempts to generate a random number using a blockhash value, allowing manipulation of the prize outcome.

The Impact of CVE-2018-17987

The vulnerability permits an attacker to influence the prize award by being the final tile purchaser when the number of buyers equals NUM_TILES.

Technical Details of CVE-2018-17987

The technical aspects of the vulnerability are crucial for understanding its implications.

Vulnerability Description

The determineWinner function in HashHeroes Tiles' smart contract can be exploited by an attacker to control the prize outcome.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions: Not applicable

Exploitation Mechanism

The vulnerability arises when the number of tile purchasers matches NUM_TILES, enabling the attacker to manipulate the prize by being the last buyer.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are essential to mitigate the risks posed by CVE-2018-17987.

Immediate Steps to Take

Review and update the smart contract code to address the determineWinner function vulnerability.
Monitor transactions and patterns in tile purchases for suspicious activities.

Long-Term Security Practices

Conduct regular security audits and code reviews to identify and fix vulnerabilities promptly.
Educate developers on secure coding practices to prevent similar issues in the future.

Patching and Updates

Apply patches or updates provided by HashHeroes Tiles to fix the vulnerability and enhance security measures.