CVE-2018-17071

State: Published
Severity: Not scored
Published: Sep 18, 2018
Updated: Aug 5, 2024
Reserved: Sep 15, 2018

Description

The fallback function of a simple lottery smart contract implementation for Lucky9io, an Ethereum gambling game, generates a random value with the publicly readable variable entry_number. This variable is private, yet it is readable by eth.getStorageAt function. Also, attackers can purchase a ticket at a low price by directly calling the fallback function with small msg.value, because the developer set the currency unit incorrectly. Therefore, it allows attackers to always win and get rewards.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
n/an/a	n/aAffected

References

https://github.com/TEAM-C4B/CVE-LIST/tree/master/CVE-2018-17071

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