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SGX Update

Intel ID:  INTEL-SA-00076
Product family:  Intel Server Systems, NUC, and Compute Stick
Impact of vulnerability Elevation of Privilege
Severity rating Critical
Original release:  Jul 25, 2017
Last revised:  Jul 25, 2017


Intel has released updates that improve the security of Intel® Software Guard Extensions (Intel® SGX).


Intel has released updates that improve the security of Intel® Software Guard Extensions (Intel® SGX). The improvement applies to 6th and 7th Generation Intel® Core™ Processor Families, Intel® Xeon® E3-1500M v5 and v6 Processor Families, and Intel® Xeon® E3-1200 v5 and v6 Processor Families.

CVSS Rating: Critical (9.0 CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H)

Affected products:

Server Systems:

Model name Updated BIOS version Update URL
Intel® Server System R1304SPOSHOR 03.01.0021
Intel® Server System R1304SPOSHORR

Intel® Server System R1208SPOSHORR

Intel® Server System LR1304SPCFG1R

Intel® Server System R1208SPOSHOR

Intel® Server Board S1200SPSR

Intel® Server Board S1200SPOR

Intel® Server System LR1304SPCFG1

Intel® Server Board S1200SPL

Intel® Server Board S1200SPO

Intel® Server Board S1200SPS

Intel® Server System R1304SPOSHBN

Intel® Server Board S1200SPLR

Intel® Server System R1304SPOSHBNR



This update improves the security of Intel® Software Guard Extensions (Intel® SGX) and is strongly recommended.

While this firmware update prevents exploitation of the issue on systems running SGX, Intel also provides an SGX Attestation service to allow service providers to know whether clients have the latest security updates. Intel plans to update the SGX Attestation Service response on November 14, 2017. On platforms that have not installed the update, SGX applications using the SGX Attestation Service will begin to receive “out of date” responses from the SGX Attestation Service. Applications using SGX may or may not take action based on this information.

If SGX Attestation is used, it may be necessary for applications using SGX to re-provision the platform with an updated SGX platform attestation key after this update is installed. This updated attestation key allows the platform to demonstrate that it is up to date.


This issue was discovered by Intel.

Revision history:






Initial Release



Corrected typos

CVE Name:  CVE-2017-5691


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