SmartMesh transferProxy/approveProxy Smart Contract access control

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.4$0-$5k0.00

Summaryinfo

A vulnerability was found in SmartMesh. It has been declared as critical. This impacts the function transferProxy/approveProxy. Executing a manipulation as part of Smart Contract can lead to access control. This vulnerability appears as CVE-2018-10769. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in SmartMesh (version now known). It has been declared as critical. This vulnerability affects the function transferProxy/approveProxy. The manipulation as part of a Smart Contract leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The transferProxy and approveProxy functions of a smart contract implementation for SmartMesh (SMT), an Ethereum ERC20 token, allow attackers to accomplish an unauthorized transfer of digital assets because replay attacks can occur with the same-named functions (with the same signatures) in other tokens: First (FST), GG Token (GG), M2C Mesh Network (MTC), M2C Mesh Network (mesh), and UG Token (UGT).

The bug was discovered 08/09/2018. The weakness was presented 08/10/2018 (Website). The advisory is available at github.com. This vulnerability was named CVE-2018-10769 since 05/06/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 1 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.

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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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
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

05/06/2018 🔍
08/09/2018 +95 days 🔍
08/10/2018 +0 days 🔍
08/10/2018 +0 days 🔍
08/11/2018 +1 days 🔍
03/14/2020 +581 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2018-10769 (🔍)
GCVE (CVE): GCVE-0-2018-10769
GCVE (VulDB): GCVE-100-122758

Entryinfo

Created: 08/11/2018 06:45
Updated: 03/14/2020 11:06
Changes: 08/11/2018 06:45 (55), 03/14/2020 11:06 (1)
Complete: 🔍
Cache ID: 216::103

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