Intel® Software Guard Extensions (SGX) – Incorrect Check Vulnerability

Number: AV17-119
Date: 09 August 2017


The purpose of this advisory is to bring attention to a vulnerability in Intel® Software Guard Extensions (SGX).


CCIRC is aware of an incorrect check vulnerability in Intel® Software Guard Extensions (SGX) in Intel processors from 6th and 7th Generation Intel Core Processor Families, Intel Xeon E3-1500M v5 and v6 Product Families, and Intel Xeon E3-1200 v5 and v6 Product Families. This privilege escalation vulnerability could allow an unprivileged user to compromise system firmware via incorrect early system state.

Suggested Action

CCIRC recommends that system administrators test and deploy the vendor-released updates to affected applications accordingly.


Intel® Software Guard Extensions (SGX) Incorrect Check Vulnerability

Note to Readers

In support of Public Safety's mission to build a safe and resilient Canada, CCIRC's mandate is to help ensure the security and resilience of the vital non-federal government cyber systems that underpin Canada's national security, public safety and economic prosperity. As Canada's computer security incident response team, CCIRC is Canada's national coordination centre for the prevention and mitigation of, preparedness for, response to, and recovery from cyber incidents on non-federal government systems. It does this by providing authoritative advice and support, and coordinating information sharing and incident response.

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For general information, please contact Public Safety Canada's Public Affairs division at:

Telephone: 613-944-4875 or 1-800-830-3118
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