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AUSCERT External Security Bulletin Redistribution
Intel Thunderbolt DCH Driver for Windows Advisory
10 November 2021
AusCERT Security Bulletin Summary
Product: Intel Thunderbolt Declarative Componentized Hardware (DCH) Drivers
Operating System: Windows
Impact/Access: Denial of Service -- Existing Account
CVE Names: CVE-2021-0110
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Intel ID: INTEL-SA-00533
Advisory Category: Firmware
Impact of vulnerability : Denial of Service
Severity rating : MEDIUM
Original release: 11/09/2021
Last revised: 11/09/2021
A potential security vulnerability in some Intel Thunderbolt Declarative
Componentized Hardware (DCH) Drivers for Windows may allow denial of service.
Intel is releasing software updates to mitigate this potential vulnerability.
Description: Improper access control in some Intel(R) Thunderbolt(TM) Windows
DCH Drivers before version 1.41.1054.0 may allow unauthenticated user to
potentially enable denial of service via local access.
CVSS Base Score: 6.2 Medium
CVSS Vector: 3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Intel Thunderbolt 3 and 4 Windows DCH Drivers before version 1.41.1054.0 for:
. Intel JHL6540 & JHL6340 & JHL6240
. Intel JHL7540 & JHL7440 & JHL7340
. Intel JHL8540 & JHL8440
. Intel 10 ^ th Gen & Intel 11 ^ th Gen Core Processors with Thunderbolt
Intel recommends updating Intel Thunderbolt DCH Drivers for Windows to version
1.41.1094 or later.
Updates are available for download at this location:
This issue was found internally by Intel.
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 Date Description
1.0 11/09/2021 Initial Release
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