PT-2019-9927 · Business Alliance Financial Circle · Bafc Smart Contract

Published 2019-12-31 · Updated 2020-01-14 · CVE-2018-19830

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 Business Alliance Financial Circle (BAFC) smart contract implementation (affected versions not specified)

Description The issue concerns the UBSexToken() function in the smart contract implementation, which is public by default and lacks caller identity checks. This allows attackers to change the contract's owner.

Recommendations As a temporary workaround, consider restricting access to the UBSexToken() function until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2018-19830

Affected Products

Bafc Smart Contract

References · 3

• 🔥 https://github.com/SmartContractResearcher/SmartContractSecurity/blob/master/New%20Vulnerabilities%20Allow%20Anyone%20to%20Own%20Certain%20ERC20-Based%20Smart%20Contracts(CVE-2018-19830%2C%20CVE-2018-19831%2C%20CVE-2018-19832%2C%20CVE-2018-19833%2C%20CVE-2018-19834)/README.md · Exploit
• 🔥 https://github.com/SmartContractResearcher/SmartContractSecurity/blob/master/New%20Vulnerabilities%20Allow%20Anyone%20to%20Own%20Certain%20ERC20-Based%20Smart%20Contracts%28CVE-2018-19830%2C%20CVE-2018-19831%2C%20CVE-2018-19832%2C%20CVE-2018-19833%2C%20CVE-2018-19834%29/README.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2018-19830 · Security Note