Support Announcements
DWA-171 : H/W Rev. Cx :: F/W MS Windows Driver v3.03 and Below (older) :: Unquoted Service Path Privilege Escalation

Overview

On June 30, 2021, a 3rd party security research submitted a report accusing the DIR-171 Rev. Cx using the MS Windows driver v3.03 or v3.01 of a Unquoted Service Path Privilege Escalation vulnerability. This vulnerability was confirmed and a patch was issued too close the reported issues.  Please find the beta/hotfix release below.


3rd Party Report information

 

          - Report provided:

                    Fazal Ur Rahman :: fazal _dot_ r42 _at_ gmail _dot_ com

 
          - Reference :

                   3rd Party Public Disclosure :: To be posted once available

 

              The Path setting not enclosed in quotation marks. Without the Quotation mark, windows will attempt to find the exe it is looking for in every folder. So the first exe found in the path will be executed. An attacker with local access can create a DWA_171.exe file in the D-link folder to perform a privilege escalation attack.

 

           POC : wmic service get name,displayname,pathname,startmode |findstr /i "auto" |findstr /i /v "c:\windows\\" |findstr /i /v """

 

 

    

 Affected Models

 

Model Hardware Revision Affected FW Fixed FW Recommendation  Last Updated
DWA-171 All C Hardware Revisions v3.03 & Below v3.04B02 Hotfix

     For Windows Users :: Please Download Hotfix and Update our device driver

08/24/2021

  

Regarding Security patch for your D-Link Devices
 
Firmware updates address the security vulnerabilities in affected D-Link devices. D-Link will update this continually and we strongly recommend all users to install the relevant updates.
 
Please note that this is a device beta software, beta firmware, or hot-fix release which is still undergoing final testing before its official release. The beta software, beta firmware, or hot-fix is provided on an “as is” and “as available” basis and the user assumes all risk and liability for use thereof. D-Link does not provide any warranties, whether express or implied, as to the suitability or usability of the beta firmware. D-Link will not be liable for any loss, whether such loss is direct, indirect, special or consequential, suffered by any party as a result of their use of the beta firmware.
 
As there are different hardware revisions on our products, please check this on your device before downloading the correct corresponding firmware update. The hardware revision information can usually be found on the product label on the underside of the product next to the serial number. Alternatively, they can also be found on the device web configuration.