Headline

CVE-2020-8698: INTEL-SA-00381

Improper isolation of shared resources in some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access.

4 years ago

CVE

Open in Source

#vulnerability #web #linux #git #intel #rce #auth

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2020.2 IPU - Intel® Processor Advisory

**Summary: **

Potential security vulnerabilities in some Intel® Processors may allow information disclosure. Intel is releasing firmware updates to mitigate these potential vulnerabilities.

Vulnerability Details:

CVEID: CVE-2020-8698

Description: Improper isolation of shared resources in some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access.

CVSS Base Score: 5.5 Medium

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

CVEID: CVE-2020-8696

Description: Improper removal of sensitive information before storage or transfer in some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access.

CVSS Base Score: 2.5 Low

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

Affected Products:

A list of impacted products can be found here.

Recommendations:

Intel recommends that users of affected Intel® Processors update to the latest version firmware provided by the system manufacturer that addresses these issues.

Intel has released microcode updates for the affected Intel® Processors that are currently supported on the public github repository.

On January 25, 2021 Intel has released new microcode updates to mitigate CVE-2020-8696 for Skylake server (50654) and Cascade Lake Server (50656 & 50657) processors. The new microcode update mitigates an issue when using an active JTAG agent like In Target Probe (ITP), Direct Connect Interface (DCI) or a Baseboard Management Controller (BMC) to take the CPU JTAG/TAP out of reset and then returning it to reset.

Skylake Server 02006a0a
Cascade Lake Server B-0 04003006
Cascade Lake Server B-1 05003006

Please see details below on access to the microcode:

GitHub*: Public Github: https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files

To address this issue, an SGX TCB recovery will be required in Q4 2020. Refer to Intel® SGX Attestation Technical Details for more information on the SGX TCB recovery process.

Acknowledgements:

The following issues were found internally by Intel employees. Intel would like to thank Ezra Caltum, Joseph Nuzman, Nir Shildan and Ofir Joseff.

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

02/16/2021

Updated Recommendations

Legal Notices and Disclaimers

Intel provides these materials as-is, with no express or implied warranties.

All products, dates, and figures specified are preliminary based on current expectations, and are subject to change without notice.

Intel, processors, chipsets, and desktop boards may contain design defects or errors known as errata, which may cause the product to deviate from published specifications. Current characterized errata are available on request.

Intel technologies’ features and benefits depend on system configuration and may require enabled hardware, software or service activation. Performance varies depending on system configuration. No product or component can be absolutely secure. Check with your system manufacturer or retailer or learn more at https://intel.com.

Some results have been estimated or simulated using internal Intel analysis or architecture simulation or modeling, and provided to you for informational purposes. Any differences in your system hardware, software or configuration may affect your actual performance.

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*Other names and brands may be claimed as the property of others.
Copyright © Intel Corporation 2022

Report a Vulnerability

If you have information about a security issue or vulnerability with an Intel branded product or technology, please send an e-mail to [email protected]. Encrypt sensitive information using our PGP public key.

Please provide as much information as possible, including:

The products and versions affected
Detailed description of the vulnerability
Information on known exploits

A member of the Intel Product Security Team will review your e-mail and contact you to collaborate on resolving the issue. For more information on how Intel works to resolve security issues, see: