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Impact of EC update auth bypass
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Classroom Contents
Breaking Through Another Side - Bypassing Firmware Security Boundaries from Embedded Controller
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- 1 Intro
- 2 Hardware Security Boundaries
- 3 Methodology
- 4 EC firmware update process
- 5 Impact of EC update auth bypass
- 6 Lenovo Thinkpad EC update header
- 7 Lenovo Thinkpad EC update process
- 8 Boot Guard saves the day?
- 9 Lenovo Thinkpad EC signature check
- 10 Lenovo disclosure timeline
- 11 EC take-aways
- 12 Intel BIOS Guard in a nutshell
- 13 What is Intel BIOS Guard?
- 14 Lenovo Thinkpad PFAT update process
- 15 BIOS Guard hardware support
- 16 BIOS Guard ACM execution flow
- 17 BIOS Guard Directory
- 18 BIOS Guard Platform Data Table
- 19 BIOS Guard Update Package
- 20 Signed vs unsigned operations with BIOS Guard script
