PT-2018-11684 · Ethereum · Swaptoken

Published 2018-07-05 · Updated 2019-11-12 · CVE-2018-13203

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

Name of the Vulnerable Software and Affected Versions SwapToken (affected versions not specified)

Description The issue concerns an integer overflow in the sellBuyerTokens function of a smart contract implementation for SwapToken, an Ethereum token. Specifically, when calculating amount * sellPrice, the result can be zero, which reduces a seller's assets.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2018-13203

Affected Products

Swaptoken

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2018-13203 · Security Note
• https://github.com/BlockChainsSecurity/EtherTokens/blob/master/ETHEREUMBLACK/sell%20integer%20overflow.md · Note
• https://github.com/BlockChainsSecurity/EtherTokens/tree/master/SwapToken · Note