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AUSCERT External Security Bulletin Redistribution
ESB-2020.3955
Intel Thunderbolt DCH Drivers for Windows Advisory
11 November 2020
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AusCERT Security Bulletin Summary
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Product: Intel Thunderbolt DCH Drivers for Windows
Publisher: Intel
Operating System: Windows
Impact/Access: Increased Privileges -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-12328 CVE-2020-12327 CVE-2020-12326
CVE-2020-12325 CVE-2020-12324
Original Bulletin:
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00422.html
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Intel ID: INTEL-SA-00422
Advisory Category: Software
Impact of vulnerability : Escalation of Privilege, Information Disclosure
Severity rating : HIGH
Original release: 11/10/2020
Last revised: 11/10/2020
Summary:
Potential security vulnerabilities in some Intel Thunderbolt DCH drivers for
Windows* may allow escalation of privilege or information disclosure. Intel is
releasing updates to mitigate these potential vulnerabilities.
Vulnerability Details:
CVEID: CVE-2020-12325
Description: Improper buffer restrictions in some Intel(R) Thunderbolt(TM) DCH
drivers for Windows* before version 72 may allow an authenticated user to
potentially enable escalation of privilege via local access.
CVSS Base Score: 8.4 High
CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
CVEID: CVE-2020-12324
Description: Protection mechanism failure in some Intel(R) Thunderbolt(TM) DCH
drivers for Windows* before version 72 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-2020-12328
Description: Protection mechanism failure in some Intel(R) Thunderbolt(TM) DCH
drivers for Windows* before version 72 may allow a privileged user to
potentially enable information disclosure via local access.
CVSS Base Score: 6.0 Medium
CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
CVEID: CVE-2020-12327
Description: Insecure default variable initialization in some Intel(R)
Thunderbolt(TM) DCH drivers for Windows* before version 72 may allow a
privileged user to potentially enable information disclosure via local access.
CVSS Base Score: 4.7 Medium
CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:H/A:N
CVEID: CVE-2020-12326
Description: Improper initialization in some Intel(R) Thunderbolt(TM) DCH
drivers for Windows* before version 72 may allow an authenticated user to
potentially enable information disclosure via local access.
CVSS Base Score: 4.7 Medium
CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
Affected Products:
Intel Thunderbolt 3 and 4 DCH drivers for Windows* before version 72.
Recommendations:
Intel recommends that users of Intel Thunderbolt 3 and 4 DCH drivers for
Windows* update to the latest version provided by the system manufacturer that
addresses these issues.
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 11/10/2020 Initial Release
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