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Crypto API Toolkit for Intel® SGX Advisory

Intel ID: INTEL-SA-00565
Advisory Category: Software
Impact of vulnerability: Escalation of Privilege
Severity rating: MEDIUM
Original release: 11/09/2021
Last revised: 11/09/2021

Summary: 

A potential security vulnerability in the Crypto API Toolkit for Intel® SGX may allow escalation of privilege.  Intel is releasing software updates to mitigate this potential vulnerability.

Vulnerability Details:

CVEID: CVE-2021-33097

Description: Time-of-check time-of-use vulnerability in the Crypto API Toolkit for Intel(R) SGX may allow a privileged user to potentially enable escalation of privilege via network access.

CVSS Base Score: 6.8 Medium

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

Affected Products:

Crypto API Toolkit for Intel(R) SGX downloaded before Aug 2, 2021.

Recommendations:

Intel recommends updating to the latest version of the Crypto API Toolkit for Intel(R) SGX available at Crypto API Toolkit for Intel(R) SGX.

Acknowledgements:

Intel would like to thank the researchers listed below for reporting this issue:

·         David Oswald & Jesse Spielman - University of Birmingham, UK

·         Fritz Alder, Jo Van Bulck & Frank Piessens - imec-DistriNet, KU Leuven, Belgium

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 11/09/2021 Initial Release

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