The latest security information on Intel® products.

Intel® IPP and SGX Software Advisory

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.

Vulnerability Details:

CVEID:  CVE-2021-0001

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

Affected Products:

·       Intel® IPP releases before 2020 update 1.

·       Intel SGX PSW for Windows v2.12.100.4 and earlier.

·       Intel SGX SDK for Windows v2.12.100.4 and earlier.

·       Intel SGX DCAP for Windows v1.10.100.4 and earlier.

·       Intel SGX PSW for Linux v2.13.100.4 and earlier.

·       Intel SGX SDK for Linux v2.13.100.4 and earlier.

·       Intel SGX DCAP for Linux v1.10.100.4 and earlier.


Intel recommends that users of Intel® IPP update to 2020 update 1 or later.

Updates are available for download at this location:

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 13, 2021.

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 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 06/08/2021 Initial Release

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

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.

Intel and the Intel logo are trademarks of Intel Corporation in the United States and other countries.

*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 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:

For issues related to Intel's external web presence ( and related subdomains), please contact Intel's External Security Research team.

Need product support?

If you...

  • Have questions about the security features of an Intel product
  • Require technical support
  • Want product updates or patches

Please visit Support & Downloads.