Local APIC Elevation of Privilege

Intel ID:  INTEL-SA-00045
Product family:  Intel® Server Board S5500HC Family, Intel® Server Board S5500HCT Family, Intel® Server Board S7000 Family, Intel® Workstation Board S5520SC Family
Impact of vulnerability Elevation of Privilege
Severity rating Important
Original release:  Aug 04, 2015
Last revised:  Sep 03, 2015
Summary: 

Intel is releasing mitigations for a privilege escalation issue. This issue affects certain Intel processors based on older Intel micro-architectures. The issue identified is a method that enables malicious code to gain access to System Management Mode (SMM).

Description: 

An issue was disclosed to Intel which leverages architectural differences in processors prior to 2nd Generation Intel® Core™ Processors to gain access to System Management Mode (SMM). Administrator or root level privileges are required to execute the attack.

Affected products: 

Product Name

Update Source

Intel® Server Board S5500BC

Intel® Server Board S5500HCV

Intel® Server Board S5500HV

Intel® Server Board S5500WB

Intel® Server Board S5520HC

Intel® Server Board S5520HCT

Intel® Server Board S5520UR

Intel® Workstation Board S5520SC

Intel® Server Board S7000FC4UR  

Recommendations: 

Intel highly recommends applying the mitigations.

Acknowledgements: 

Intel would like to acknowledge Christopher Domas of Battelle for working with us on this coordinated disclosure.

Revision history: 

Revision
Date
Description
1.0
05-August-2015
Initial Release
1.1
03-September-2015
Added Intel products


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