High severity · published Jul 5, 2018
CVE-2018-13188
The mintToken function of a smart contract implementation for MyBO, an Ethereum token, has an integer overflow that allows the owner of the contract to set the balance of an…
7.5
CVSS
1.1%
EPSS
No
On KEV
Description
The mintToken function of a smart contract implementation for MyBO, 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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MY
Mybo · Mybo Project
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-13188
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-13188
Exploit
https://github.com/BlockChainsSecurity/EtherTokens/blob/master/GEMCHAIN/mint%20integer%20overflow.md
Third Party Advisory
https://github.com/BlockChainsSecurity/EtherTokens/tree/master/MyBoToken
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The sell function of a smart contract implementation for MyBO, an Ethereum token, has an integer overflow in which "amount * sellPrice" can be zero, consequently reducing a…