Operating System:

[Win]

Published:

09 June 2021

Protect yourself against future threats.

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.2020
                   Intel Thunderbolt Controller Advisory
                                9 June 2021

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Intel Thunderbolt controllers
Publisher:         Intel
Operating System:  Windows
Impact/Access:     Denial of Service -- Existing Account
                   Reduced Security  -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-12296 CVE-2020-12295 CVE-2020-12294
                   CVE-2020-12293 CVE-2020-12292 CVE-2020-12291
                   CVE-2020-12290 CVE-2020-12289 CVE-2020-12288

Original Bulletin: 
   https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00401.html

- --------------------------BEGIN INCLUDED TEXT--------------------

Intel ID:                 INTEL-SA-00401
Advisory Category:        Firmware
Impact of vulnerability : Denial of Service
Severity rating :         HIGH
Original release:         06/08/2021
Last revised:             06/08/2021

Summary:

Potential security vulnerabilities in some Intel Thunderbolt controllers may
allow denial of service. Intel is releasing firmware updates to mitigate these
potential vulnerabilities.

Vulnerability Details:

CVEID: CVE-2020-12293

Description: Improper control of a resource through its lifetime in some Intel
(R) Thunderbolt(TM) controllers may allow an authenticated user to potentially
enable denial of service via local access.

CVSS Base Score: 7.3 High

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

CVEID: CVE-2020-12294

Description: Insufficient control flow management in some Intel(R) Thunderbolt
(TM) controllers may allow an authenticated user to potentially enable denial
of service via local access.

CVSS Base Score: 7.3 High

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

CVEID: CVE-2020-12295

Description: Improper input validation in some Intel(R) Thunderbolt(TM)
controllers may allow an authenticated user to potentially enable denial of
service via local access.

CVSS Base Score: 7.3 High

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

CVEID: CVE-2020-12296

Description: Uncontrolled resource consumption in some Intel(R) Thunderbolt(TM)
controllers may allow an authenticated user to potentially enable denial of
service via local access.

CVSS Base Score: 7.3 High

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

CVEID: CVE-2020-12291

Description: Uncontrolled resource consumption in some Intel(R) Thunderbolt(TM)
controllers may allow an authenticated user to potentially enable denial of
service via local access.

CVSS Base Score: 6.5 Medium

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

CVEID: CVE-2020-12292

Description: Improper conditions check in some Intel(R) Thunderbolt(TM)
controllers may allow an authenticated user to potentially enable denial of
service via local access.

CVSS Base Score: 6.5 Medium

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

CVEID: CVE-2020-12290

Description: Improper access control in some Intel(R) Thunderbolt(TM)
controllers may allow an authenticated user to potentially enable denial of
service via local access.

CVSS Base Score: 6.5 Medium

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

CVEID: CVE-2020-12288

Description: Protection mechanism failure in some Intel(R) Thunderbolt(TM)
controllers may allow an authenticated user to potentially enable denial of
service via local access.

CVSS Base Score: 3.8 Low

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

CVEID: CVE-2020-12289

Description: Out-of-bounds write in some Intel(R) Thunderbolt(TM) controllers
may allow an authenticated user to potentially enable denial of service via
local access.

CVSS Base Score: 3.8 Low

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

Affected Products:

+------------------------------+------------+
|Thunderbolt 3, 4 Retimer and  |Before      |
|USB Retimer                   |Version     |
+------------------------------+------------+
|Intel DSL5520                 |All         |
+------------------------------+------------+
|Intel DSL5320                 |All         |
+------------------------------+------------+
|Intel DSL6340                 |All         |
+------------------------------+------------+
|Intel DSL6540                 |All         |
+------------------------------+------------+
|Intel JHL6540                 |46          |
+------------------------------+------------+
|Intel JHL6340                 |46          |
+------------------------------+------------+
|Intel JHL6240                 |21          |
+------------------------------+------------+
|Intel JHL7540                 |60          |
+------------------------------+------------+
|Intel JHL7340                 |60          |
+------------------------------+------------+
|Intel JHL7440                 |60          |
+------------------------------+------------+
|Intel JHL8040R                |41          |
+------------------------------+------------+
|Intel JHL8010R                |41          |
+------------------------------+------------+
|Intel JHL7040                 |22          |
+------------------------------+------------+

Recommendations:

Intel recommends that users of Intel Thunderbolt controllers update to the
latest version provided by the system manufacturer that addresses these issues.

Intel recommends that users of Intel Thunderbolt 3 Controller for the Intel
NUC8ixBE and NUC7ixBN update to 46 or later. Updates are available for download
at this location: Intel-NUC8ixBE-and-NUC7ixBN

Intel recommends that users of Intel Thunderbolt 3 Controller for the Intel
NUC10ixFN update to 60 or later. Updates are available for download at this
location: Intel-NUC10ixFN

Intel recommends that users of Intel Thunderbolt 3 Controller for the Intel
NUC8vPN update to 60 or later. Updates are available for download at this
location: NUC8vPN

Intel recommends that users of Intel Thunderbolt 3 Controller for the Intel
NUC9QN update to 60 or later. Updates are available for download at this
location: NUC9QN

Intel recommends that users of Intel Thunderbolt 3 for the Intel NUC 9 Extreme
Laptop Kits update to 60 or later. Updates are available for download at this
location: Intel NUC 9 Extreme Laptop Kits

Intel will not be releasing mitigation for CVEID: CVE-2020-12289 and
CVE-2020-12288 for Intel Thunderbolt 3 controllers JHL7540, JHL7340, JHL7440,
DSL6340, DSL6540, JHL6240, JHL6540 and JHL6340. To recover from these issues a
device power cycle is needed.

Intel has issued Product Discontinuation notices for the Intel DSL5520 &
DSL5320 Thunderbolt 2 Controllers and Intel DSL6340 & DSL6540 Thunderbolt 3
Controllers and Intel recommends that users discontinue use at their earliest
convenience.

Acknowledgements:

These issues were 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 History

Revision    Date      Description
1.0      06/08/2021 Initial Release

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