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AUSCERT External Security Bulletin Redistribution
Intel SGX SDK Advisory
13 October 2021
AusCERT Security Bulletin Summary
Product: Intel SGX SDK
Operating System: Windows
Impact/Access: Increased Privileges -- Existing Account
CVE Names: CVE-2021-0186
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Intel ID: INTEL-SA-00548
Advisory Category: Software
Impact of vulnerability: Escalation of Privilege
Severity rating: HIGH
Original release: 10/12/2021
Last revised: 10/12/2021
A potential security vulnerability in Intel Software Guard Extensions (SGX)
Software Development Kit (SDK)applications compiled for SGX2-enabled processors
may allow escalation of privilege. Intel is releasing software updates to
mitigate this potential vulnerability.
Description: Improper input validation in the Intel(R) SGX SDK applications
compiled for SGX2 enabled processors may allow a privileged user to potentially
escalation of privilege via local access.
CVSS Base Score: 8.2 High
CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Intel SGX SDK for Windows v2.12 and earlier.
Intel SGX SDK for Linux v2.13 and earlier.
Intel Processors supporting SGX2:
Code Name Product Collection
Ice Lake Xeon-SP (HCC, XCC) 3rd Gen Intel Xeon Scalable processor family
Ice Lake 10th Generation Intel Core Processor Family
Gemini Lake Intel Pentium Processor Silver Series, Intel Celeron
Processor J Series, Intel Celeron Processor N Series
Intel recommends updating the Intel SGX SDK to the versions listed below.
Enclaves built with the new Intel SGX SDK version should increment the value of
their ISVSVN field.
Intel SGX SDK for Windows to version 2.13 or later: https://
Intel SGX SDK for Linux to version 2.14 or later: https://01.org/
Intel would like to thank Jinhua Cui, National University of Defense Technology
and National University of Singapore, Shweta Shinde, ETH Zurich , Zhijingcheng
Yu, National University of Singapore, and Prateek Saxena, National University
of Singapore 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 Date Description
1.0 10/12/2021 Initial Release
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