Intel® NUC BIOS Security Updates

Intel ID:  INTEL-SA-00084
Product family:  Intel® NUC Kits
Impact of vulnerability Elevation of Privilege
Severity rating Important
Original release:  Oct 06, 2017
Last revised:  Oct 10, 2017
Summary: 

This update mitigates multiple vulnerabilities related to security features in certain Intel® NUC system firmware (BIOS).

Description: 

BIOS Administrator and User password bypass: Insufficient protection of password storage in system firmware for NUC7i3BNK, NUC7i3BNH, NUC7i5BNK, NUC7i5BNH, NUC7i7BNH versions BN0049 and below allows local attacker to bypass Administrator and User passwords via access to password storage.

  • CVE-2017-5700 – 7.1 (High): CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

SPI Write Protection Bypass: Insecure platform configuration in system firmare for NUC7i3BNK, NUC7i3BNH, NUC7i5BNK, NUC7i5BNH, NUC7i7BNH versions BN0049 and below allows an attacker with physical presence to run arbitrary code via unauthorized firmware modification during BIOS Recovery.

  • CVE-2017-5701 – 7.1 (High): CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

SMM Privilege Elevation: Insufficient input validation in system firmware for NUC7i3BNK, NUC7i3BNH, NUC7i5BNK, NUC7i5BNH, NUC7i7BNH versions BN0049 allows local attacker to execute arbitrary code via manipulation of memory.

  • CVE-2017-5721 - 7.5 (High): CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Boot Guard Bypass: Incorrect policy enforcement in system firmware for NUC7i3BNK, NUC7i3BNH, NUC7i5BNK, NUC7i5BNH, NUC7i7BNH versions BN0049 allows attacker with local or physical access to bypass enforcement of integrity protections via manipulation of firmware storage.

  • CVE-2017-5722 - 7.5 (High): CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected products: 

The following Intel NUC and Compute Stick products have BIOS updates to mitigate these issues:

Recommendations: 

Intel highly recommends that users update to the latest version (see table above).

Acknowledgements: 

Intel would like to thank Nikolaj Schlej for reporting CVE-2017-5700 and CVE-2017-5701 and working with us on coordinated disclosure.

 

Intel would like to thank Ruslan Zakirov and Alex Ermolov of Embedi for reporting CVE-2017-5721 and CVE-2017-5722 and working with us on coordinated disclosure.

Revision history: 

Revision
Date
Description
1.0
06-October-2017
Initial Release
1.1
10-October-2017
Updated wording
1.2
10-October-2017
CVE update
1.3
17-October-2017
Remove unrelated CVE Number


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