Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 46.7%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
Products affected by CVE-2018-17987
-
cpe:2.3:a:hashheroes:hashheroes:-