CVE-2022-21233: INTEL-SA-00657

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2022.2 IPU - Intel® Processor Advisory

**Summary: **

A potential security vulnerability in some Intel® Processors may allow information disclosure. Intel is releasing firmware updates to address this potential vulnerability.

Vulnerability Details:

CVEID: CVE-2022-21233

Description: Improper isolation of shared resources in some Intel® Processors 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:C/C:H/I:N/A:N

Affected Products:

Consult this list of affected products 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. In addition, Intel will be releasing Intel® SGX SDK updates soon after public embargo is lifted.

Intel has released microcode updates for the affected Intel® Processors that are currently supported on the public github repository. Please see details below on access to the microcode:

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

For Intel® SGX customers, please note there is a known sighting that affects the patch installation recommendation for 3rd Generation Intel® Xeon® Scalable Processors, Codename Icelake-SP, further details and a workaround are available here.

Intel® SGX SDK Download Links:

• Intel SGX SDK for Windows v2.16.101.1 and later have the mitigations:
  https://registrationcenter.intel.com/en/products/download/3407/
• Intel SGX SDK for Linux v2.17.101.1 and later have the mitigations:
  https://01.org/intel-software-guard-extensions/downloads

Intel SGX TCB Recovery Plans:

Further details around the planned Intel SGX TCB recovery can be found here.

Refer to Intel SGX Attestation Technical Details for more information on the Intel SGX TCB recovery process.

Further TCB Recovery Guidance for developers is available.

Acknowledgements:

Intel would like to thank Pietro Borrello from Sapienza University of Rome, Andreas Kogler, Martin Schwarzl, Daniel Gruss from Graz University of Technology, Michael Schwarz from CISPA Helmholtz Center for Information Security and Moritz Lipp from Amazon Web Services for reporting this issue.

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

08/09/2022

Initial Release

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Copyright © Intel Corporation 2022

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