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7.5
CVE-2018-13593: CardToken lets owner set any user balance
CVE-2018-13593 · published 8 years ago
Summary
The CardToken smart contract has a coding error that lets the contract owner change any user's token balance to any amount. This could be used to create or remove tokens arbitrarily, affecting the token's value and trust. Update the contract code to fix the error or redeploy a corrected version as soon as possible.
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 |
|---|---|---|
| osscardtoken_project | osscardtoken |
All versions
cpe:2.3:a:osscardtoken_project:osscardtoken:-:*:*:*:*:*:*:* |
Original advisory text
The mintToken function of a smart contract implementation for CardToken, an Ethereum token, has an integer overflow that allows the owner of the contract to set the balance of an arbitrary user to ...
The mintToken function of a smart contract implementation for CardToken, an Ethereum token, has an integer overflow that allows the owner of the contract to set the balance of an arbitrary user to any value.
References
- https://github.com/BlockChainsSecurity/EtherTokens/blob/master/GEMCHAIN/mint%20i... Exploit Third Party Advisory
- https://github.com/BlockChainsSecurity/EtherTokens/tree/master/CardToken Third Party Advisory
Internet-facing
14 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically (estimated)
- Gives an attacker partial control (estimated)
Type
CWE-190Integer Overflow
Timeline
Published9 Jul 2018
Updated3 Nov 2026
First seen29 Sep 2026
Sources
CVE-2018-13593 · NVD
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