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Intel® NUC Firmware Advisory

Intel ID: INTEL-SA-00414
Advisory Category: Firmware, Software
Impact of vulnerability: Escalation of Privilege
Severity rating: HIGH
Original release: 11/10/2020
Last revised: 11/10/2020

Summary: 

Potential security vulnerabilities in system firmware and software for some Intel® NUCs may allow escalation of privilege. Intel is releasing firmware and software updates to mitigate these potential vulnerabilities.

Vulnerability Details:

CVEID:  CVE-2020-12336

Description: Insecure default variable initialization in firmware for some Intel(R) NUCs may allow an authenticated user to potentially enable escalation of privilege via local access.

CVSS Base Score: 7.8 High

CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

 

CVEID:  CVE-2020-12337

Description: Improper buffer restrictions in firmware for some Intel(R) NUCs may allow a privileged user to potentially enable escalation of privilege via local access.

CVSS Base Score: 7.5 High

CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

 

CVEID:  CVE-2020-24525

Description: Insecure inherited permissions in firmware update tool for some Intel(R) NUCs may allow an authenticated user to potentially enable escalation of privilege via local access.

CVSS Base Score: 6.7 Medium

CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

 

Affected Products for NUC firmware:

Product

BIOS download link

Intel® NUC Board DE3815TYBE with a SA number H27002-500 and later. The SA number is located on the back of the chassis. 

TYBYT20H.86A

Intel® NUC Kit DE3815TYKHE with an AA number H26998-500 and later. The AA number is found on the board’s memory module socket. 

TYBYT20H.86A

Intel® NUC Board DE3815TYBE with the following SA numbers: H27002-400, -401, -402, -404, and -404. The SA number is located on the back of the chassis. 

TYBYT10H.86A

Intel® NUC Kit DE3815TYKHE with the following AA numbers: H26998-401, -402, -403, -404, and -405. The AA number is found on the board’s memory module socket. 

TYBYT10H.86A

Intel® NUC 8 Rugged Kit NUC8CCHKR

CHAPLCEL.0049

Intel® NUC Board NUC8CCHB

CHAPLCEL.0049

Intel® NUC 8 Pro Mini PC NUC8i3PNK

PNWHL357.0037

Intel® NUC 8 Pro Kit NUC8i3PNK

PNWHL357.0037

Intel® NUC 8 Pro Kit NUC8i3PNH

PNWHL357.0037

Intel® NUC 8 Pro Board NUC8i3PNB

PNWHL357.0037

Intel® NUC 9 Pro Kit - NUC9V7QNX

QNCFLX70.34

Intel® NUC 9 Pro Kit - NUC9VXQNX

QNCFLX70.34

Intel® NUC 8 Mainstream-G kit (NUC8i5INH)

INWHL357.0036

Intel® NUC 8 Mainstream-G kit (NUC8i7INH)

INWHL357.0036

Intel® NUC 8 Mainstream-G mini PC (NUC8i5INH)

INWHL357.0036

Intel® NUC 8 Mainstream-G mini PC (NUC8i7INH)

INWHL357.0036

Recommendations:

Intel recommends that users update to the latest NUC firmware version (see provided table).

Intel recommends users update HDMI Firmware Update Tool for NUC7i3DN, NUC7i5DN and NUC7i7DN to an updated version 1.76 via the following URL: https://downloadcenter.intel.com/download/27315?v=t

Acknowledgements:

Intel would like to thank Dmitry Frolov for reporting CVE-2020-12336, Micro Yngwei for reporting CVE-2020-12337, SaifAllah benMassaoud and Mustapha Mhenaoui for reporting CVE-2020-24525.

Intel, and nearly the entire technology industry, follows a disclosure practice called Coordinated Disclosure, under which a cybersecurity vulnerability is generally publicly disclosed only after mitigations are available.

Revision History

Revision Date Description
1.0 11/10/2020 Initial Release

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