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SmmRuntime Escalation of Privilege

Intel ID:  INTEL-SA-00056
Product family:  Intel® Server Board S1200/1400/1600/2400/2600/4600 series
Impact of vulnerability Elevation of Privilege
Severity rating Important
Original release:  Aug 08, 2016
Last revised:  Sep 30, 2016

Summary: 

Intel is releasing mitigations for a privilege escalation issue. This issue affects the UEFI BIOS of select Intel Products. The issue identified is a method that enables malicious code to gain access to System Management Mode (SMM).

Description: 

A malicious attacker with local administrative access can leverage the vulnerable function to gain access to System Management Mode (SMM) and take full control of the platform. Intel products that are listed below should apply the update.

Other vendors’ products which use the common BIOS function SmmRuntime may be impacted.  To find out whether a product you have may be vulnerable to this issue, please contact your system supplier.


The table below provides the list of Intel products impacted by the issue as well as the versions and the locations of the BIOS that contains the fix. If the customer system has BIOS version lower than one listed in the table customer is recommended to upgrade the BIOS to the version listed below, or later.

How to identify Intel® Server Boards model and BIOS version?

To identify the server board model and the BIOS version customer can use one of the methods below.

  1. For server systems running Microsoft Windows operating systems, download and run the Intel® System Support Utility and view

Detailed View – Computer – BIOS Version/Date

Detailed View – Computer – System Model

The utility will generate an output file with computer system information. The BIOS version and the board model should look like this:

BIOS Version/Date            Intel Corporation SE5C610.86B.01.01.0008.021120151325 , 02/11/2015 12:00 AM

System Model                    S2600WT2      

   2.  For server systems running Linux operating system customers should execute the commands below to obtain the BIOS version and the Board model respectively:

dmidecode -t 0 | grep Version | awk -F : '{ print $2 }' | sed s/\ //g

dmidecode -t 2 | grep Product | awk -F : '{ print $2 }' | sed s/\ //g

The first command will return the line of text similar to this:

SE5C610.86B.01.01.0016.033120161139

The second command will return the line of text similar to this:

S2600WTT

In this example the commands were executed on the Intel® Server Board S2600WTT belonging to the Intel® Server Board S2600WT Family with the BIOS version 0016.

Affected products:

Product Name Recommended BIOS version (or later)
Intel® Server Board S1200RP Family 0006
Intel® Server Board S1400FP Family 0005
Intel® Server Board S1400SP Family 0005
Intel® Server Board S1600JP Family 0005
Intel® Server Board S2400BB Family 0005
Intel® Server Board S2400EP Family 0005
Intel® Server Board S2400SC Family 0005
Intel® Server Board S2600CO Family 0005
Intel® Server Board S2600CP Family 0005

Intel® Server Board S2600GL Family

Intel® Server Board S2600GZ Family

0005

 

Intel® Server Board S2600IP Family 0005
Intel® Workstation Board W2600CR Family 0005
Intel® Server Board S2600JF Family 0005
Intel® Server Board S2600WP Family 0005

Intel® Server Board S4600LH Family

Intel® Server Board S4600LT Family

0005
Intel® Server Board S2600CW Family 0018
Intel® Server Board S2600KP Family 0018
Intel® Server Board S2600TP Family 0018
Intel® Server Board S2600WT Family 0018

Recommendations: 

Intel highly recommends applying the mitigations. For Intel branded products where a mitigation is still pending, we recommend following good security practices including running with least privilege and keeping security software and operating systems up to date.

Acknowledgements: 

N/A

Revision history:

Revision

Date

Description

1.1

16-August-2016

Removed Intel® Compute Module MFS2600KI due to EOL

1.2

23-August-2016

Removed EOLd boards and updated availability date

1.3

29-September-2016

Updated remaining boards with BIOS download URL

1.4

30-September-2016

Corrected Version Numbers

CVE Name:  CVE-2016-8101

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