2019.2 IPU – Intel® SGX with Intel® Processor Graphics Update Advisory
A potential security vulnerability in Intel® Software Guard Extensions (SGX) enabled processors with Intel® Processor Graphics may allow information disclosure. Intel is releasing software and firmware updates to mitigate this potential vulnerability.
Description: Insufficient access control in protected memory subsystem for Intel(R) SGX for 6th, 7th, 8th, 9th Generation Intel(R) Core(TM) Processor Families; Intel(R) Xeon(R) Processor E3-1500 v5, v6 Families; Intel(R) Xeon(R) E-2100 & E-2200 Processor Families with Intel(R) Processor Graphics may allow a privileged user to potentially enable information disclosure via local access.
CVSS Base Score: 6.0 Medium
CVSS Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
- 6th Generation Intel® Core™ processors
- 7th Generation Intel® Core™ processors
- 8th Generation Intel® Core™ processors
- 9th Generation Intel® Core™ processors
- Intel® Xeon® Processor E3 v5 Family
- Intel® Xeon® Processor E3 v6 Family
- Intel® Xeon® Processor E- 2100 Family
- Intel® Xeon® Processor E-2200 Family
Intel recommends following the steps below to address these issues:
Impacted system users:
- Ensure the latest BIOS from your system provider and Intel SGX platform software (PSW) is installed.
- Disable integrated processor graphics where they are not used (usually server).
- Where integrated processor graphics are required, get updated SGX application(s) from your SGX application provider(s).
- Organize the code/data within enclave memory to avoid putting sensitive materials in DWORD0 and DWORD1 of cache line. The effectiveness of this mitigation is dependent on the ability for the software to avoid the affected memory region. To assist the enclave application providers to modify their code, Intel is releasing SGX SDK update (Windows version 18.104.22.168, Linux version 22.214.171.124) with new memory allocation APIs to avoid the affected memory region. More details about the APIs can be found here.
- Increase the Security Version Number (ISVSVN) of the enclave application to reflect that these modifications have been put in place.
- For existing solutions which utilize Remote Attestation (IAS), please refer to Intel® SGX Attestation Technical Details to determine whether you may need to implement changes to your SGX application for SGX attestation service.
The status of available microcode can be found here.
Windows developers can find latest SGX SDK at https://registrationcenter.intel.com/en/forms/?productid=2614
Linux developers can find latest SGX SDK at https://01.org/intel-software-guard-extensions/downloads
This issue was found internally by Intel. Intel would like to thank Artem Shishkin, Edgar Barbosa, Gabriel Negreira Barbosa, Gustavo de Castro Scotti, Jeffrey S Frizzell, Kekai Hu, Rodrigo Axel Monroy, Willem Pinckaers
, and Rodrigo Rubira Branco (BSDaemon).
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.
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 computer system can be absolutely secure. Check with your system manufacturer or retailer or learn more at https://intel.com.
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 2020
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 email@example.com. 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 (Intel.com and related subdomains), please contact Intel's External Security Research team.