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AUSCERT External Security Bulletin Redistribution
ESB-2021.3732
Intel NUC HDMI Firmware Update Tool Advisory
10 November 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Intel NUC HDMI Firmware Update Tool
Publisher: Intel
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Increased Privileges -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-33090 CVE-2021-33089 CVE-2021-0096
Original Bulletin:
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00568.html
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Intel ID: INTEL-SA-00568
Advisory Category: Software
Impact of vulnerability : Escalation of Privilege
Severity rating : MEDIUM
Original release: 11/09/2021
Last revised: 11/09/2021
Summary:
Potential security vulnerabilities in the Intel NUC HDMI Firmware Update Tool
may allow escalation of privilege. Intel is releasing software updates to
mitigate these potential vulnerabilities.
Vulnerability Details:
CVEID: CVE-2021-0096
Description: Improper authentication in the software installer for the Intel(R)
NUC HDMI Firmware Update Tool for NUC7i3DN, NUC7i5DN, NUC7i7DN before version
1.78.1.1 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
CVEID: CVE-2021-33089
Description: Improper access control in the software installer for the Intel(R)
NUC HDMI Firmware Update Tool for NUC8i3BE, NUC8i5BE, NUC8i7BE before version
1.78.4.0.4 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
CVEID: CVE-2021-33090
Description: Incorrect default permissions in the software installer for the
Intel(R) NUC HDMI Firmware Update Tool for NUC10i3FN, NUC10i5FN, NUC10i7FN
before version 1.78.2.0.7 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:
Intel NUC HDMI Firmware Update Tool for NUC7i3DN, NUC7i5DN, NUC7i7DN before
version 1.78.1.1.
Intel NUC HDMI Firmware Update Tool for NUC8i3BE, NUC8i5BE, NUC8i7BE before
version 1.78.4.0.4.
Intel NUC HDMI Firmware Update Tool for NUC10i3FN, NUC10i5FN, NUC10i7FN before
version 1.78.2.0.7.
Recommendations:
Intel recommends updating the Intel NUC HDMI Firmware Update Tool to the latest
version below. Updates are available for download at these locations:
Intel NUC - NUC7i3DN, NUC7i5DN, NUC7i7DN version 1.78.1.1 or later:
https://www.intel.com/content/www/us/en/download/19749/
hdmi-firmware-update-tool-for-nuc7i3dn-nuc7i5dn-nuc7i7dn.html
Intel NUC - NUC8i3BE, NUC8i5BE, NUC8i7BE version 1.78.4.0.4 or later:
https://downloadcenter.intel.com/download/29472/
HDMI-Firmware-Update-Tool-for-NUC8i3BE-NUC8i5BE-NUC8i7BE
Intel NUC - NUC10i3FN, NUC10i5FN, NUC10i7FN version 1.78.2.0.7 or later:
https://downloadcenter.intel.com/download/29779/
HDMI-Firmware-Update-Tool-for-NUC10i3FN-NUC10i5FN-NUC10i7FN
Acknowledgements:
Intel would like to thank Wael Guesmi (CVE-2021-0096), Jungsu (CVE-2021-33089)
and Mustapha Mhenaoui (CVE-2021-33090) for reporting these issues.
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 11/09/2021 Initial Release
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