What is CVE-2018-17987?

CVE-2018-17987 is a high-severity vulnerability in Hashheroes, classified under Use of Insufficiently Random Values. CVSS score: 7.5/10. Published 2018-12-26.

How severe is CVE-2018-17987?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Hashheroes

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.

EPSS: 0.009 (56.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Hashheroes
N/a — versions n/a

Weakness classification (CWE)

CWE-330 — Use of Insufficiently Random Values

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-17987?: CVE-2018-17987 is a high-severity vulnerability in Hashheroes, classified under Use of Insufficiently Random Values. CVSS score: 7.5/10. Published 2018-12-26.
How severe is CVE-2018-17987?: High severity. CVSS v3 base score is 7.5 out of 10.