Vulnerabilities > CVE-2018-12511 - Integer Overflow or Wraparound vulnerability in Substratum

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
PARTIAL
Availability impact
NONE
network
low complexity
substratum
CWE-190

Summary

In the mintToken function of a smart contract implementation for Substratum (SUB), an Ethereum ERC20 token, the administrator can control mintedAmount, leverage an integer overflow, and modify a user account's balance arbitrarily.

Vulnerable Configurations

Part Description Count
Application
Substratum
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Forced Integer Overflow
    This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.