THINKPAD USB 3.0 ETHERNET ADAPTE DRIVER PRIVILEGE ESCALATION

A vulnerability was found in ThinkPad USB 3.0 Ethernet Adapte (the affected version is unknown). It has been declared as critical. Affected by this vulnerability is an unknown function of the component Driver. The manipulation with an unknown input leads to a privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-269. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 08/29/2017. The advisory is shared for download at support.lenovo.com. This vulnerability is known as CVE-2017-3746 since 12/16/2016. An attack has to be approached locally. The successful exploitation requires a single authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/29/2017).

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

CVSSv3

VulDB Base Score: 7.8
VulDB Temp Score: 7.8
VulDB Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
VulDB Reliability: High

CVSSv2

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Local	High	Multiple	None	None	None
Adjacent	Medium	Single	Partial	Partial	Partial
Network	Low	None	Complete	Complete	Complete

VulDB Base Score: 6.6 (CVSS2#AV:L/AC:M/Au:S/C:C/I:C/A:C)
VulDB Temp Score: 6.6 (CVSS2#E:ND/RL:ND/RC:ND)
VulDB Reliability: High

CPE

• cpe:/a:thinkpad_usb_3.0_ethernet_adapte:thinkpad_usb_3.0_ethernet_adapter

Exploiting

Class: Privilege escalation (CWE-269)
Local: Yes
Remote: No

Availability: No

Price Prediction: steady
Current Price Estimation: 

0-Day	$0-$5k	$5k-$25k	$25k-$100k	$100k-$500k
Today	$0-$5k	$5k-$25k	$25k-$100k	$100k-$500k

Countermeasures

Recommended: no mitigation known
0-Day Time: 0 days since found

Timeline

12/16/2016   CVE assigned
08/29/2017  +256 days Advisory disclosed
08/29/2017  +0 days VulDB entry created
08/29/2017  +0 days VulDB last update

Sources

Advisory: support.lenovo.com

CVE: CVE-2017-3746 (mitre.org) (nvd.nist.org) (cvedetails.com)