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Intel NUC Local Privilege Escalation

Intel NUC Local Privilege Escalation
Posted Nov 16, 2020
Authored by Vulnerability Laboratory, S.AbenMassaoud | Site vulnerability-lab.com

Intel NUC suffers from a local privilege escalation vulnerability.

tags | advisory, local
SHA-256 | 4515ad6e66e1783f8cb8987d1fa3313ce314d88a0e44b4586e45190847548b34

Intel NUC Local Privilege Escalation

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Document Title:
Intel NUC - Local Privilege Escalation Vulnerability

References (Source):



Release Date:

Vulnerability Laboratory ID (VL-ID):

Common Vulnerability Scoring System:

Vulnerability Class:
Privilege Escalation

Current Estimated Price:
10.000€ - 25.000€

Product & Service Introduction:
The Intel® NUC kit consists of a customizable mainboard and housing. You
can choose from a large selection of memory
and data storage as well as the operating system.

(Copy of the Homepage:
https://www.intel.de/content/www/de/de/products/boards-kits/nuc/kits.html )

Abstract Advisory Information:
A vulnerability laboratory core team researcher discovered a local
privilege escalation in the official Intel® NUC.

Affected Product(s):
Intel® NUC

Intel® NUC Board DE3815TYBE with a SA number H27002-500 and later. The
SA number is located on the back of the chassis.
Intel® NUC Kit DE3815TYKHE with an AA number H26998-500 and later. The
AA number is found on the board’s memory module socket.
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
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.
Intel® NUC 8 Rugged Kit NUC8CCHKR
Intel® NUC Board NUC8CCHB
Intel® NUC 8 Pro Mini PC NUC8i3PNK
Intel® NUC 8 Pro Kit NUC8i3PNK
Intel® NUC 8 Pro Kit NUC8i3PNH
Intel® NUC 8 Pro Board NUC8i3PNB
Intel® NUC 9 Pro Kit - NUC9V7QNX
Intel® NUC 9 Pro Kit - NUC9VXQNX
Intel® NUC 8 Mainstream-G kit (NUC8i5INH)
Intel® NUC 8 Mainstream-G kit (NUC8i7INH)
Intel® NUC 8 Mainstream-G mini PC (NUC8i5INH)
Intel® NUC 8 Mainstream-G mini PC (NUC8i7INH)

Vulnerability Disclosure Timeline:
2020-11-13: Public Disclosure (Vulnerability Laboratory)

Discovery Status:

Exploitation Technique:

Severity Level:

Authentication Type:
Restricted Authentication (User Privileges)

User Interaction:
No User Interaction

Disclosure Type:
Bug Bounty

Technical Details & Description:
Insecure inherited permissions in firmware update tool for some Intel(R)
NUCs may allow an authenticated user with
system privileges to potentially enable an escalation of the local
process privilege via local system access.

Solution - Fix & Patch:
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

Security Risk:
The security risk of the local privilege escalation vulnerability in the
intel nuc is estimated as medium.

Credits & Authors:
S.AbenMassaoud [Core Research Team] -

Disclaimer & Information:
The information provided in this advisory is provided as it is without
any warranty. Vulnerability Lab disclaims all warranties,
either expressed or implied, including the warranties of merchantability
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incidental damages so the foregoing limitation may not apply.
We do not approve or encourage anybody to break any licenses, policies,
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