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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.3964
                2020.2 IPU - Intel RAPL Interface Advisory
                             11 November 2020

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

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

Product:           Intel Running Average Power Limit Interface
Publisher:         Intel
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-8695 CVE-2020-8694 

Original Bulletin: 
   https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00389.html

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

Intel ID:                 INTEL-SA-00389
Advisory Category:        Firmware
Impact of vulnerability : Information Disclosure
Severity rating :         MEDIUM
Original release:         11/10/2020
Last revised:             11/10/2020

Summary:

Potential security vulnerabilities in the Intel Running Average Power Limit
(RAPL) Interface may allow information disclosure. Intel is releasing microcode
and Linux driver updates to mitigate these potential vulnerabilities.

Vulnerability Details:

CVEID: CVE-2020-8694

Description: Insufficient access control in the Linux kernel driver for some
Intel(R) Processors may allow an authenticated user to potentially enable
information disclosure via local access.

CVSS Base Score: 5.6 Medium

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

CVEID: CVE-2020-8695

Description: Observable discrepancy in the RAPL interface for some Intel(R)
Processors may allow a privileged user to potentially enable information
disclosure via local access.

CVSS Base Score: 5.3 Medium

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

Affected Products:

+----------------------------------------+--------------+----------+
|Product Collection                      |Vertical      |CPUID     |
|                                        |Segment       |          |
+----------------------------------------+--------------+----------+
|8th Generation Intel Core Processor     |Mobile        |806E9     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|10th Generation Intel Core Processor    |Mobile        |806EC     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|8th Generation Intel Core Processor     |Mobile        |906EA     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|9th Generation Intel Core Processor     |Mobile        |906EC     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|8th Generation Intel Core Processor     |Desktop       |906EA     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|9th Generation Intel Core Processor     |Desktop       |906EC     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|Intel Xeon Processor E Family           |Server        |906EA     |
|                                        |Workstation   |          |
|                                        |AMT Server    |          |
+----------------------------------------+--------------+----------+
|8th Generation Intel Core Processor     |Mobile        |806EA     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|8th Generation Intel Core Processor     |Desktop       |906EB     |
|Family Intel Pentium Gold Processor     |              |          |
|Series Intel Celeron Processor G Series |              |          |
+----------------------------------------+--------------+----------+
|Intel Xeon Processor E Family           |Server        |906EA     |
|                                        |Workstation   |          |
|                                        |AMT Server    |          |
+----------------------------------------+--------------+----------+
|8th Generation Intel Core Processor     |Desktop       |906EA     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|9th Generation Intel Core Processor     |Desktop       |906ED     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|9th Generation Intel Core Processor     |Desktop       |906ED     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|10th Generation Intel Core Processor    |Mobile        |A0660     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|10th Generation Intel Core Processor    |Mobile        |A0661     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|10th Generation Intel Core Processor    |Mobile        |806EC     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|10th Generation Intel Core Processor    |Desktop       |A0653     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|10th Generation Intel Core Processor    |Mobile        |A0655     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|10th Generation Intel Core Processor    |Mobile        |A0652     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|Intel Pentium Processor Silver Series   |Desktop Mobile|706A1     |
|Intel Celeron Processor J Series Intel  |Embedded      |          |
|Celeron Processor N Series              |              |          |
+----------------------------------------+--------------+----------+
|Intel Pentium Processor Silver Series   |Desktop Mobile|706A8     |
|Intel Celeron Processor J Series Intel  |Embedded      |          |
|Celeron Processor N Series              |              |          |
+----------------------------------------+--------------+----------+
|10 ^th Generation Intel Core Processor  |Mobile        |706E5     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|8th Generation Intel Core Processor     |Mobile        |906E9     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|7th Generation Intel Core Processor     |Mobile        |906E9     |
|Family                                  |Embedded      |          |
+----------------------------------------+--------------+----------+
|8th Generation Intel Core Processor     |Mobile        |806EA     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|7th Generation Intel Core Processor     |Desktop       |906E9     |
|Family                                  |Embedded      |          |
+----------------------------------------+--------------+----------+
|7th Generation Intel Core Processor     |Mobile        |806E9     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|7th Generation Intel Core               |Mobile        |806E9     |
|                                        |              |          |
|Processor Family                        |              |          |
+----------------------------------------+--------------+----------+
|Intel Core X-series Processors          |Desktop       |906E9     |
+----------------------------------------+--------------+----------+
|Intel Xeon Processor E3 v6 Family       |Server        |906E9     |
|                                        |Workstation   |          |
|                                        |AMT Server    |          |
+----------------------------------------+--------------+----------+
|7th Generation Intel Core Processor     |Mobile        |806E9     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|6th Generation Intel Core Processor     |Mobile        |506E3     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|6th Generation Intel Core Processor     |Desktop       |506E3     |
|Family                                  |Embedded      |          |
+----------------------------------------+--------------+----------+
|6th Generation Intel Core Processors    |Mobile        |406E3     |
+----------------------------------------+--------------+----------+
|6th Generation Intel Core Processor     |Mobile        |406E3     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|Intel Xeon Processor E3 v5 Family       |Server        |506E3     |
|                                        |Workstation   |          |
|                                        |AMT Server    |          |
+----------------------------------------+--------------+----------+
|6th Generation Intel Core Processor     |Mobile        |406E3     |
|Family                                  |              |          |
+----------------------------------------+--------------+----------+
|8th Generation Intel Core Processors    |Mobile        |806EB     |
+----------------------------------------+--------------+----------+
|8th Generation Intel Core Processors    |Mobile        |806EC     |
+----------------------------------------+--------------+----------+

Recommendations:

Intel recommends that users of affected Intel Processors update to the latest
firmware version provided by the system manufacturer that addresses this issue.

Intel recommends that users of affected Intel Processors install the updates
provided by their software vendors. In Linux, for the change to be effective it
will require a reboot. If a reboot is not possible, Intel recommends changing
the permissions of the affected sysfs attributes so that only privileged users
can access them.

Acknowledgements:

CVE-2020-8694 and CVE-2020-8695 were found externally, Intel would like to
thank:

Graz University of Technology: Moritz Lipp, Andreas Kogler, Daniel Gruss

CISPA Helmholtz Center for Information Security: Michael Schwarz

University of Birmingham: David Oswald.

CVE-2020-8695 was found internally by Intel employees. Intel would like to
thank Chen Liu, Terry Wang, Neer Roggel, Ben Gras, Monodeep Kar, Bilgiday Yuce.

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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