3rd Generation Intel® Xeon® Scalable Processors Advisory

Summary:

A potential security vulnerability in some 3rd Generation Intel® Xeon® Scalable Processors may allow information disclosure. Intel is releasing firmware updates to mitigate this potential vulnerability.

Vulnerability Details:

CVEID: CVE-2022-33972

Description: Incorrect calculation in microcode keying mechanism for some 3rd Generation Intel® Xeon® Scalable Processors may allow a privileged user to potentially enable information disclosure via local access.

CVSS Base Score: 6.1 Medium

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

Affected Products:

Product Collection

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Vertical Segment

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CPU ID

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Platform ID

—|—|—|—

3rd Gen Intel® Xeon® Scalable processor family

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Server

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606A6

|

0x87

Recommendations:

Intel recommends that users of affected 3rd Generation Intel® Xeon® Scalable Processors update to the latest version of 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. Please see details below on access to the microcode:

GitHub*: Public Github: <https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files&gt;__

Details on the microcode loading points can be found at:

<https://www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/secure-coding/loading-microcode-os.html&gt;

This CVE requires a Microcode Security Version Number (SVN) update. To address this vulnerability, a SGX TCB recovery is planned, refer here for more information on the SGX TCB recovery process.

Acknowledgements:

Intel would like to thank Microsoft 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.