VDB-105865 · CVE-2017-3746 · BID 100520

ThinkPad USB 3.0 Ethernet Adapter Driver access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
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.
7.8$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in ThinkPad USB 3.0 Ethernet Adapter. Affected by this issue is some unknown functionality of the component Driver. This manipulation causes access control. This vulnerability is registered as CVE-2017-3746. The attack needs to be launched locally. No exploit is available.

Detailsinfo

A vulnerability was found in ThinkPad USB 3.0 Ethernet Adapter (the affected version is unknown). It has been declared as critical. Affected by this vulnerability is an unknown code of the component Driver. The manipulation with an unknown input 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. The summary by CVE is:

ThinkPad USB 3.0 Ethernet Adapter (part number 4X90E51405) driver, various versions, was found to contain a privilege escalation vulnerability that could allow a local user to execute arbitrary code with administrative or system level privileges.

The bug was discovered 08/27/2017. The weakness was published 08/29/2017 (Website). The advisory is shared at support.lenovo.com. This vulnerability is known as CVE-2017-3746 since 12/16/2016. An attack has to be approached locally. A single authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

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.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 100520†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.8

VulDB Base Score: 7.8
VulDB Temp Score: 7.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
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: Partially
Local: Yes
Remote: No

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

12/16/2016 🔍
08/24/2017 +251 days 🔍
08/27/2017 +3 days 🔍
08/28/2017 +1 days 🔍
08/29/2017 +1 days 🔍
08/29/2017 +0 days 🔍
11/11/2019 +804 days 🔍

Sourcesinfo

Advisory: support.lenovo.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-3746 (🔍)
GCVE (CVE): GCVE-0-2017-3746
GCVE (VulDB): GCVE-100-105865
SecurityFocus: 100520 - Lenovo ThinkPad USB 3.0 Ethernet Adapter CVE-2017-3746 Local Privilege Escalation Vulnerability

Entryinfo

Created: 08/29/2017 11:49
Updated: 11/11/2019 09:55
Changes: 08/29/2017 11:49 (50), 11/11/2019 09:55 (10)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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