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AUSCERT External Security Bulletin Redistribution
Intel IPP and SGX Software Advisory
9 June 2021
AusCERT Security Bulletin Summary
Product: Intel Integrated Performance Primitives (IPP)
Intel Software Guard Extension (SGX)
Operating System: Windows
Impact/Access: Access Confidential Data -- Existing Account
CVE Names: CVE-2021-0001
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Intel ID: INTEL-SA-00477
Advisory Category: Software
Impact of vulnerability : Information Disclosure
Severity rating : LOW
Original release: 06/08/2021
Last revised: 06/08/2021
A potential security vulnerability in the Intel Integrated Performance
Primitives (IPP) Crypto Library may allow information disclosure. Intel IPP is
used by Intel Software Guard Extension (SGX), and Intel is releasing software
updates to mitigate this potential vulnerability.
Description: Observable timing discrepancy in Intel(R) IPP before version 2020
update 1 may allow authorized 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:U/C:L/I:N/A:N
. Intel IPP releases before 2020 update 1.
. Intel SGX PSW for Windows v220.127.116.11 and earlier.
. Intel SGX SDK for Windows v18.104.22.168 and earlier.
. Intel SGX DCAP for Windows v22.214.171.124 and earlier.
. Intel SGX PSW for Linux v126.96.36.199 and earlier.
. Intel SGX SDK for Linux v188.8.131.52 and earlier.
. Intel SGX DCAP for Linux v184.108.40.206 and earlier.
Intel recommends that users of Intel IPP update to 2020 update 1 or later.
Updates are available for download at this location: https://github.com/intel/
Intel recommends updating the SGX software below; the updated SGX software will
include mitigations for the IPP issue and are currently scheduled to be
available by May 14, 2021.
Intel SGX PSW for Windows to version 2.12.103 or later:
Intel SGX SDK for Windows to version 2.12.103 or later:
Intel SGX DCAP for Windows to version 1.10.103 or later:
Intel SGX PSW for Linux to version 2.13.103 or later:
Intel SGX SDK for Linux to version 2.13.103 or later:
Intel SGX DCAP for Linux to version 1.10.103 or later:
To address this issue, an SGX TCB recovery is planned for Q2 2021. Customers
will require the software update to get successful attestation responses. For
customers using the Intel Attestation Service (IAS), the IAS Development
Environment (DEV) will enforce the software updates beginning June 15, 2021 and
the IAS Production Environment (LIV) will enforce the updates beginning July
For customers that are not using IAS, but instead are constructing their own
attestation infrastructure using the Intel SGX Provisioning Certificate Service
(PCS), updated Endorsements/Reference Values (i.e., PCK Certificates and
verification collateral) will be available June 8, 2021. These customers decide
when to enforce the software update, as part of their Appraisal Policies.
Refer to Intel SGX Attestation Technical Details for more information on the
SGX TCB recovery process.
Further TCB Recovery Guidance for developers is available.
Intel would like to thank Tuba Yavuz, Farhaan Fowze, Ken (Yihang) Bai, Grant
Hernandez, Kevin Butler and Dave Tian from University of Florida for reporting
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 Date Description
1.0 06/08/2021 Initial Release
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