CVE-2020-8745: INTEL-SA-00391

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2020.2 IPU – Intel® CSME, SPS, TXE, AMT and DAL Advisory

Intel ID:

INTEL-SA-00391

Advisory Category:

Firmware, Software

Impact of vulnerability:

Escalation of Privilege, Denial of Service, Information Disclosure

Severity rating:

CRITICAL

Original release:

11/10/2020

Last revised:

5/12/2022

**Summary: **

Potential security vulnerabilities in Intel® Converged Security and Manageability Engine (CSME), Server Platform Services (SPS), Intel® Trusted Execution Engine (TXE), Intel® Dynamic Application Loader (DAL), Intel® Active Management Technology (AMT), Intel® Standard Manageability (ISM) and Intel® Dynamic Application Loader (Intel® DAL) may allow escalation of privilege, denial of service or information disclosure. Intel is releasing firmware and software updates to mitigate these potential vulnerabilities.

Intel is not releasing updates to mitigate a potential vulnerability and has issued a Product Discontinuation Notice for Intel® DAL SDK.

Vulnerability Details:

CVEID: CVE-2020-8752

Description: Out-of-bounds write in IPv6 subsystem for Intel® AMT, Intel® ISM versions before 11.8.80, 11.12.80, 11.22.80, 12.0.70, 14.0.45 may allow an unauthenticated user to potentially enable escalation of privileges via network access.

CVSS Base Score: 9.4 Critical

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

CVEID: CVE-2020-8753

Description: Out-of-bounds read in DHCP subsystem for Intel® AMT, Intel® ISM versions before 11.8.80, 11.12.80, 11.22.80, 12.0.70 and 14.0.45 may allow an unauthenticated user to potentially enable information disclosure via network access.

CVSS Base Score: 8.2 High

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

CVEID: CVE-2020-12297

Description: Improper access control in Installer for Intel® CSME Driver for Windows versions before 11.8.80, 11.12.80, 11.22.80, 12.0.70, 13.0.40, 13.30.10, 14.0.45 and 14.5.25, Intel TXE 3.1.80, 4.0.30 may allow an authenticated user to potentially enable escalation of privileges via local access.

CVSS Base Score: 8.2 High

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

CVEID: CVE-2020-12304

Description: Improper access control in Installer for Intel® DAL SDK before version 2.1 for Windows may allow an authenticated user to potentially enable escalation of privileges via local access.

CVSS Base Score: 8.2 High

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

CVEID: CVE-2020-8745

Description: Insufficient control flow management in subsystem for Intel® CSME versions before 11.8.80, 11.12.80, 11.22.80, 12.0.70, 13.0.40, 13.30.10, 14.0.45 and 14.5.25 , Intel® TXE versions before 3.1.80 and 4.0.30 may allow an unauthenticated user to potentially enable escalation of privilege via physical access.

CVSS Base Score: 7.3 High

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

CVEID: CVE-2020-8744

Description: Improper initialization in subsystem for Intel® CSME versions before12.0.70, 13.0.40, 13.30.10, 14.0.45 and 14.5.25, Intel® TXE versions before 4.0.30 Intel® SPS versions before E3_05.01.04.200 may allow a privileged user to potentially enable escalation of privilege via local access.

CVSS Base Score: 7.2 High

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

CVEID: CVE-2020-8705

Description: Insecure default initialization of resource in Intel® Boot Guard in Intel® CSME versions before 11.8.82, 11.12.82, 11.22.82, 12.0.70, 13.0.40, 13.30.10, 14.0.45 and 14.5.25, Intel® TXE versions before 3.1.80 and 4.0.30, Intel® SPS versions before E5_04.01.04.400, E3_04.01.04.200, SoC-X_04.00.04.200 and SoC-A_04.00.04.300 may allow an unauthenticated user to potentially enable escalation of privileges via physical access.

CVSS Base Score: 7.1 High

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

CVEID: CVE-2020-8750

Description: Use after free in Kernel Mode Driver for Intel® TXE versions before 3.1.80 and 4.0.30 may allow an authenticated user to potentially enable escalation of privilege via local access.

CVSS Base Score: 7.0 High

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

CVEID: CVE-2020-12303

Description: Use after free in DAL subsystem for Intel® CSME versions before 11.8.80, 11.12.80, 11.22.80, 12.0.70, 13.0.40, 13.30.10, 14.0.45 and 14.5.25, Intel® TXE 3.1.80, 4.0.30 may allow an authenticated user to potentially enable escalation of privileges via local access.

CVSS Base Score: 7.0 High

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

CVE ID: CVE-2020-12354

Description: Incorrect default permissions in Windows® installer in Intel® AMT SDK versions before 14.0.0.1 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-2020-8757

Description: Out-of-bounds read in subsystem for Intel® AMT versions before 11.8.80, 11.12.80, 11.22.80, 12.0.70 and 14.0.45 may allow a privileged user to potentially enable escalation of privilege via local access.

CVSS Base Score: 6.3 Medium

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

CVEID: CVE-2020-8756

Description: Improper input validation in subsystem for Intel® CSME versions before 11.8.80, 11.12.80, 11.22.80, 12.0.70 and 14.0.45 may allow a privileged user to potentially enable escalation of privilege via local access.

CVSS Base Score: 6.3 Medium

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

CVEID: CVE-2020-8760

Description: Integer overflow in subsystem for Intel® AMT versions before 11.8.80, 11.12.80, 11.22.80, 12.0.70, 14.0.45 may allow a privileged user to potentially enable escalation of privilege via local access.

CVSS Base Score: 6.0 Medium

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

CVE ID: CVE-2020-12355

Description: Authentication bypass by capture-replay in RPMB protocol message authentication subsystem in Intel® TXE versions before 4.0.30 may allow an unauthenticated user to potentially enable escalation of privilege via physical access.

CVSS Base Score: 5.3 Medium

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

CVEID: CVE-2020-8751

Description: Insufficient control flow management in subsystem for Intel® CSME versions before 11.8.80, Intel® TXE versions before 3.1.80 may allow an unauthenticated user to potentially enable information disclosure via physical access.

CVSS Base Score: 5.3 Medium

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

CVEID: CVE-2020-8754

Description: Out-of-bounds read in subsystem for Intel® AMT, Intel® ISM versions before 11.8.80, 11.12.80, 11.22.80, 12.0.70 and 14.0.45 may allow an unauthenticated user to potentially enable information disclosure via network access.

CVSS Base Score: 5.3 Medium

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

CVEID: CVE-2020-8761

Description: Inadequate encryption strength in subsystem for Intel® CSME versions before 13.0.40 and 13.30.10 may allow an unauthenticated user to potentially enable information disclosure via physical access.

CVSS Base Score: 4.9 Medium

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

CVEID: CVE-2020-8747

Description: Out-of-bounds read in subsystem for Intel® AMT versions before 11.8.80, 11.12.80, 11.22.80, 12.0.70 and 14.0.45 may allow an unauthenticated user to potentially enable information disclosure and/or denial of service via network access.

CVSS Base Score: 4.8 Medium

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

CVEID: CVE-2020-8755

Description: Race condition in subsystem for Intel® CSME versions before 12.0.70 and 14.0.45, Intel® SPS versions before E5_04.01.04.400 and E3_05.01.04.200 may allow an unauthenticated user to potentially enable escalation of privilege via physical access.

CVSS Base Score: 4.6 Medium

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

CVE ID: CVE-2020-12356

Description: Out-of-bounds read in subsystem in Intel® AMT versions before 11.8.80, 11.12.80, 11.22.80, 12.0.70 and 14.0.45 may allow a privileged user to potentially enable information disclosure via local access.

CVSS Base Score: 4.4 Medium

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

CVEID: CVE-2020-8746

Description: Integer overflow in subsystem for Intel® AMT versions before 11.8.80, 11.12.80, 11.22.80, 12.0.70 and 14.0.45 may allow an unauthenticated user to potentially enable denial of service via adjacent access.

CVSS Base Score: 4.3 Medium

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

CVEID: CVE-2020-8749

Description: Out-of-bounds read in subsystem for Intel® AMT versions before 11.8.80, 11.12.80, 11.22.80, 12.0.70 and 14.0.45 may allow an unauthenticated user to potentially enable escalation of privilege via adjacent access.

CVSS Base Score: 4.2 Medium

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

Affected Products:

• Intel® CSME and Intel® AMT versions before 11.8.82, 11.12.82, 11.22.82, 12.0.70, 13.0.40, 13.30.10, 14.0.45 and 14.5.25.

• Intel® TXE versions before 3.1.80 and 4.0.30.

• Intel® Server Platform Services firmware versions before SPS_E5_04.01.04.400, SPS_E3_05.01.04.200, SPS_E3_04.01.04.200, SPS_SoC-X_04.00.04.200 and SPS_SoC-A_04.00.04.300.

The following CVEs assigned by Intel, correspond to a subset of the CVEs disclosed on 12/18/2020 as part of ICSA-20-353-01:

Disclosed in INTEL-SA-00391

Disclosed in ICSA-20-353-01

CVE-2020-8752

CVE-2020-27337

CVE-2020-8753

CVE-2020-27338

CVE-2020-8754

CVE-2020-27336

Note: Firmware versions of Intel® ME 3.x thru 10.x, Intel® TXE 1.x thru 2.x, and Intel® Server Platform Services 1.x thru 2.X are no longer supported versions. There is no new general release planned for these versions.

Recommendations:

Intel recommends that users of Intel® CSME, Intel® TXE, Intel® AMT and Intel® SPS update to the latest version provided by the system manufacturer that addresses these issues.

The Intel® AMT SDK is available for download here.

Intel has issued a Product Discontinuation notice for the Intel® DAL SDK and recommends that users of the Intel® DAL SDK uninstall it or discontinue use at their earliest convenience.

Acknowledgements:

Intel would like to thank Trammell Hudson (CVE-2020-8705), Marius Gabriel Mihai (CVE-2020-12354, CVE-2020-12304), Oussama Sahnoun (CVE-2020-12297), Rotem Sela and Brian Mastenbrook (CVE-2020-12355) for reporting these issues.

The additional issues were found internally by Intel employees. Intel would like to thank Arie Haenel, Aviya Erenfeld, Binyamin Belaciano, Dmitry Piotrovsky, Julien Lenoir, Niv Israely, Ofek Mostovoy, Yakov Cohen and Yossef Kuszer.

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

1.1

12/30/2020

Revisions to CVE-2020-8705 and affected product versions.

1.2

01/22/2021

Added ICSA-20-353-01 reference

1.3

05/12/2022

Updated Acknowledgments

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