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CVE-2018-17071

N/A
Published: September 18, 2018 at 09:00 PM UTC
Updated: June 17, 2026 at 01:45 AM UTC
1 product affected across 1 vendorLUCKY9IO

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Severity
N/A
Exploit prediction
EPSS 1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

LUCKY9IO· LUCKY9
95%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://github.com/TEAM-C4B/CVE-LIST/tree/master/CVE-2018-17071

CVSS

5MEDIUM[email protected]
Confidentiality
PARTIAL
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-338

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