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CVE-2018-17987 Details

Description

The determineWinner function of a smart contract implementation for HashHeroes Tiles, an Ethereum game, 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, which allows an attacker to control the awarding of the prize by being the last person to purchase a tile.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/TEAM-C4B/CVE-LIST/tree/master/CVE-2018-17987	CVE	ExploitThird Party Advisory
https://github.com/TEAM-C4B/CVE-LIST/tree/master/CVE-2018-17987	[email protected]	ExploitThird Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-330	Use of Insufficiently Random Values	[email protected]

Affected Products

Product	Versions
hashheroes hashheroes	All versions
CPE cpe:2.3:a:hashheroes:hashheroes:-:::::::* Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Feb 14, 2019	Initial Analysis	[email protected]