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Intel® NUC and Intel® Compute Stick DCI Disable
Intel ID:  INTEL-SA-00073
Product family:  Intel® NUC and Intel® Compute Stick based on 6th Gen Intel® Core™ processors
Impact of vulnerability Information Disclosure
Severity rating Moderate
Original release:  Apr 03, 2017
Last revised:  Apr 03, 2017
Summary: 

Intel® NUC and Intel® Compute Stick systems based on 6th Gen Intel® Core™ processors do not have DCI debug capability properly locked for BIOS only access. This would allow an attacker with physical possession of the system to potentially enable DCI from outside the BIOS. 

 
Description: 

Intel® Direct Connect Interface (DCI) provides closed chassis access to perform debug for processing OEM and OEM customer returns.  DCI is was designed to be enabled only via BIOS settings.  Current settings in the referenced product family BIOS may allow an attacker with physical access to the system.

If an attacker were able to gain physical access to a system and enable DCI, it is possible they may gain access to personal information.  Intel views this risk as a Moderate (4.7) due to physical access and high privileges being required by an attacker.

  • Moderate (4.7) CVSS:3.0/AV:P/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L
 
Affected products: 

Model Number

Code Name

All versions before

Fixed BIOS Name

STK2MV64CC

Cedar City

CC0047

CCSKLm5v.86a

STK2M3W64CC

Cedar City

CV0050

CCSKLm30.86a

NUC6i7KYK

Skull Canyon

KY0045

KYSKLi70.86a

NUC6i5SYH/K

NUC6i3SYH/K

Swift Canyon

SY0059

SYSKLi35.86a

 
Recommendations: 

Intel recommends updating to the latest BIOS identified in Affected Products from https://downloadcenter.intel.com or http://www.intel.com/content/www/us/en/support/boards-and-kits.html

 
Acknowledgements: 

Intel would like to thank Maxim Goryachy and Mark Ermolov from Positive Technologies.

 
Revision history: 
Revision
Date
Description
1.0
03-April-2017
Initial Release
1.1
10-April-2017
Updated wording
1.2
12-April-2017
Updated Models
 
CVE Name: 
CVE-2017-5684

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