Integer overflow in SmartMesh ERC20 token

1) Integer overflow

EUVDB-ID: #VU12183

Risk: High

CVSSv3.1: 9.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L/E:H/RL:U/RC:C]

CVE-ID: CVE-2018-10376

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to manipulate digital assets.

The vulnerability exists due to integer overflow in a smart contract implementation for SmartMesh (aka SMT) within Ethereum ERC20 token. A remote unauthenticated attacker can increase digital assets via crafted _fee and _value parameter.

Note: the vulnerability was actively exploited in April 2018 and was dubbed "proxyOverflow".

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

SmartMesh ERC20 token: All versions

CPE2.3

• cpe:2.3:a:smartmesh_foundation_pte:smartmesh_erc20_token:*:*:*:*:*:*:*:

External links

http://dasp.co/#item-3
http://peckshield.com/2018/04/25/proxyOverflow/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.