CVE-2018-17987 - 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

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HIGH

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

Published Dec 26, 2018

7.5

HIGH

CVSS 3.0

EPSS 0.93%

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.

Affected products

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-330

Insufficient Randomness

References (1)

https://github.com/TEAM-C4B/CVE-LIST/tree/master/CVE-2018-17987
x_refsource_MISCExploitThird Party Advisory

Link	Providers	Tags
https://github.com/TEAM-C4B/CVE-LIST/tree/master/CVE-2018-17987		x_refsource_MISCExploitThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Dec 26, 2018

Updated Aug 5, 2024

Reserved Oct 4, 2018

Link CVE-2018-17987

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2018-17987

Red Hat

Severity n/a

Public date n/a

Links CVE-2018-17987