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CVE-2018-13225: MyYLC token sell can erase seller funds

CVE-2018-13225 · published 8 years ago

Summary

The MyYLC token’s smart contract has a calculation error when selling tokens: multiplying the number of tokens by the price can incorrectly result in zero. This can cause a seller’s balance to be reduced or lost. Update the contract code to fix the multiplication or apply the provided patch to prevent the loss.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software

Vendor	Product	Affected versions
myylc_project	myylc	All versions `cpe:2.3:a:myylc_project:myylc:-:::::::*`

Original advisory text

The sell function of a smart contract implementation for MyYLC, an Ethereum token, has an integer overflow in which "amount * sellPrice" can be zero, consequently reducing a seller's assets.

References

https://github.com/BlockChainsSecurity/EtherTokens/blob/master/ETHEREUMBLACK/sel... Exploit Third Party Advisory
https://github.com/BlockChainsSecurity/EtherTokens/tree/master/MyYLCToken Third Party Advisory

Fix within

Internet-facing 14 days

Internal 60 days

Not known to be exploited
Can be exploited automatically (estimated)
Gives an attacker partial control (estimated)

Severity

7.5 High

Exploitation

1% chance of attack within 30 days

Type

CWE-190Integer Overflow

Timeline

Published5 Jul 2018

Updated31 Oct 2026

First seen29 Sep 2026

Sources

CVE-2018-13225 · NVD

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