The latest security information on Intel® products.

Firmware Authentication Bypass

Intel ID:
INTEL-SA-00152
Product family:
4th Gen Intel® Core™ Processor, 5th Gen Intel® Core™ Processor, 6th Gen Intel® Core™ Processor, and 7th Gen Intel® Core™ Processor
Impact of vulnerability:
Escalation of Privilege
Severity rating:
Important
Original release:
07/10/2018
Last revised:
07/10/2018

Summary:

Potential security vulnerability allowing bypass of firmware authentication and incorrect TPM measurement of system firmware.

Description:

Platform sample code firmware included with 4th Gen Intel® Core™ Processor (Haswell), 5th Gen Intel® Core™ Processor (Broadwell), 6th Gen Intel® Core™ Processor (Skylake), and 7th Gen Intel® Core™ Processor (Kaby Lake) contains a logic error potentially allowing a physical attacker to bypass firmware authentication.

•    High - 7.6 CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Logic error in platform sample code firmware included with 4th Gen Intel® Core™ Processor (Haswell), 5th Gen Intel® Core™ Processor (Broadwell), 6th Gen Intel® Core™ Processor (Skylake), and 7th Gen Intel® Core™ Processor (Kaby Lake) potentially allows a physical attacker to exploit incorrect TPM measurement of system firmware.

•    Medium 6.8 - CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products:

•    4th Gen Intel® Core™ Processor
•    5th Gen Intel® Core™ Processor
•    6th Gen Intel® Core™ Processor
•    7th Gen Intel® Core™ Processor

Recommendations:

Intel released updated firmware to address this issue and recommends that end-users contact their system manufacturers for updated system firmware.

Revision History

Revision Date Description
1.0 07/10/2018 Initial Release

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