PT-2018-14316 · Hashheroes · Hashheroes Tiles

Published 2018-12-26 · Updated 2019-02-14 · CVE-2018-17987

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

Name of the Vulnerable Software and Affected Versions HashHeroes Tiles (affected versions not specified)

Description The issue concerns the determineWinner function of a smart contract implementation for HashHeroes Tiles, an Ethereum game. This function uses a certain blockhash value in an attempt to generate a random number for the case where NUM TILES equals the number of people who purchased a tile. As a result, an attacker can control the awarding of the prize by being the last person to purchase a tile.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use of Insufficiently Random Values

Weakness Enumeration

CWE-330

Related Identifiers

CVE-2018-17987

Affected Products

Hashheroes Tiles

References · 2

• 🔥 https://github.com/TEAM-C4B/CVE-LIST/tree/master/CVE-2018-17987 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2018-17987 · Security Note