Untrusted search path in Intel Graphics Driver allows unprivileged user to elevate privileges via local access

Intel ID:  INTEL-SA-00080
Product family:  Mobile, Desktop, Server, Workstation, and Embedded platforms based on Intel® Core™ and Atom™ Processors with Processor Graphics using an identified driver.
Impact of vulnerability Elevation of Privilege
Severity rating Moderate
Original release:  Jan 16, 2018
Last revised:  Jan 16, 2018
Summary: 

Untrusted Path which can potentially lead to an elevation of privilege.   Reference CVE-2017-5696.

Description: 

Older versions (1)  of the some Intel® Graphics Drivers for Windows (2)  Code Branches contain a potentially untrusted search path which may allow a local attacker to execute code with elevated privilege.
 
Medium 6.3 CVSS:3:0/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H

(1) Intel graphics driver version contain 3 or 4 numbers separated by a period.  The first two numbers indicate the relevant code branch.  The last number indicates if that driver is impacted by this vulnerability.

(2) Third party marks and brands are the property of their respective owners.

Affected products: 

Mobile, Desktop, Server, Workstation, and Embedded platforms based on Intel® Core™ and Atom™ Processors using an identified driver.
The following table lists impacted driver code branches and the first version containing the recommended mitigation.  Driver versions having the last number greater than, or equal to, the listed version are not impacted.  Driver versions with the last number less than the listed version are impacted.  Driver code branches not listed are not currently impacted.

Driver Code Branch

1st Mitigated Version

Notes

15.40 (Windows 7, 8.1, 10)

15.40.x.4835

15.40.37.4835

Available Now

15.45 (SKL and KBL)

15.45.x.4627

21.20.x.4627

 

15.45.23.4860

21.20.16.4860

Available Now

 

Check with your system’s manufacturer to see if they provide an updated graphics driver.  Alternatively, you can use the Intel® Driver and Support Assistant to identify and update your driver directly from Intel.  The Driver and Support Assistant can be found at https://www.intel.com/content/www/us/en/support.html

Direct links to the available graphics drivers can be found at https://downloadcenter.intel.com and searching for the relevant version number above.  You can also search for graphics drivers compatible with your particular system.  Intel recommends that users with affected drivers download and upgrade to the latest supported driver version.  The driver with the highest last number is the latest.  For example, 15.40.37.4835 is a later version than 15.40.36.4703 because 4835 is a higher number than 4703.

 

 

Recommendations: 

Intel recommends that users with affected drivers download and upgrade to the latest supported driver.

  • If practical, update affected drivers from the system manufacturer’s support site.
  • Alternatively, Intel provides the Intel® Driver & Support Assistant on Intel.com to assist customers in identifying and installing the correct driver for their system.
  • Customers can also search directly for a driver compatible with their system, download it, and install it.

If you need further assistance, contact Customer Support to submit an online service request.

Acknowledgements: 

Intel would like to thank Lenovo Group Ltd for reporting the issue and working with Intel on a coordinated disclosure.

Revision history: 

Revision
Date
Description
1.0
16-January-2018
Initial Release

CVE Name:  CVE-2017-5696

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