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MitreCVE-2018-19830

HistoryDec 31, 2019 - 4:15 p.m.

CVE-2018-19830

2019-12-3116:15:11

CWE-862

mitre

web.nvd.nist.gov

cve-2018-19830

ubsextoken

smart contract

bafc

ethereum

erc20

token

security vulnerability

identity verification

nvd

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS

0.001

Percentile

30.6%

JSON

The UBSexToken() function of a smart contract implementation for Business Alliance Financial Circle (BAFC), an tradable Ethereum ERC20 token, allows attackers to change the owner of the contract, because the function is public (by default) and does not check the caller’s identity.

Affected configurations

Nvd

Node

business_alliance_financial_circle_projectbusiness_alliance_financial_circleMatch-

VendorProductVersionCPE
business_alliance_financial_circle_projectbusiness_alliance_financial_circle-cpe:2.3:a:business_alliance_financial_circle_project:business_alliance_financial_circle:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
business_alliance_financial_circle_project	business_alliance_financial_circle	-	cpe:2.3:a:business_alliance_financial_circle_project:business_alliance_financial_circle:-:::::::*

References

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

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS

0.001

Percentile

30.6%

JSON

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