Partial Physical Address Leakage Advisory
A potential security vulnerability in some microprocessors may allow partial information disclosure via local access.
Description: Logic condition in specific microprocessors may allow an authenticated user to potentially enable partial physical address information disclosure via local access.
CVSS Base Score: 3.8 Low
CVSS Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Intel® Core™ X-series Processors, 4th Generation Intel® Core™ i5 Processors,4th Generation Intel® Core™ i3 Processors, Intel® Pentium® Processor G Series, Intel® Pentium® Processor 3000 Series, Intel® Celeron® Processor 2000 Series, Intel® Xeon® Processor E7 v3 Family, Intel® Xeon® Processor E5 v3 Family, Intel® Xeon® Processor E3 v3 Family.
Partial physical address information potentially disclosed through exploitation of this vulnerability does not contain user secrets, but could potentially be utilized to enhance unrelated attack methods. For published exploits that Intel is aware of, Intel recommends users follow existing best practices including:
The use of DRAM modules resistant to Rowhammer style attacks.
Security Best Practices For Side Channel Resistance:
Guidelines For Mitigating Timing Side Channels Against Cryptographic Implementations:
Intel would like to thank Andrew Kwong, Daniel Genkin from University of Michigan and Daniel Gruss from Graz University of Technology and Yuval Yarom from University of Adelaide and Data61 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.
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 firstname.lastname@example.org. 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.