Cornerstone mintToken Smart Contract integer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Cornerstone. This affects the function mintToken. The manipulation as part of Smart Contract leads to integer overflow. This vulnerability is uniquely identified as CVE-2018-13767. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Cornerstone (the affected version is unknown). It has been rated as critical. This issue affects the function mintToken. The manipulation as part of a Smart Contract leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The mintToken function of a smart contract implementation for Cornerstone, 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.

The bug was discovered 07/04/2018. The weakness was disclosed 07/09/2018 (Website). It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2018-13767 since 07/08/2018. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-120336, VDB-120337, VDB-120338 and VDB-120339 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/04/2018 🔍
07/08/2018 +4 days 🔍
07/09/2018 +0 days 🔍
07/09/2018 +0 days 🔍
07/09/2018 +0 days 🔍
03/03/2020 +603 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2018-13767 (🔍)
GCVE (CVE): GCVE-0-2018-13767
GCVE (VulDB): GCVE-100-120887
See also: 🔍

Entryinfo

Created: 07/09/2018 17:08
Updated: 03/03/2020 08:56
Changes: 07/09/2018 17:08 (56), 03/03/2020 08:56 (1)
Complete: 🔍
Cache ID: 216::103

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