Support Announcements
DIR-882-US Rev. Ax , DIR-878 Rev Ax, DIR-867-US Rev Ax. Two Stack Overflow Vulnerabiltiies

 

Overview

 

 In November 2019, a 3rd party accused the D-Link Brand DIR-882-US Rev. Ax, DIR-878 Rev Ax, DIR-867-US Rev Ax sold in the US of two security LAN-side vulnerabilities that may elevate to a stack-overflow causing the device to stop regular operation. The security issues were verified, and patches made available below to close these vulnerabilities.

 

3rd Party Report information

 

          - Provided by:  Ritian Zhang: acew0lfzhang _at_ gmail _doc_ com

  

 

         - Reference :

 

           - Bug 1: Stack Overflow In the primary function of prog.cgi, when parsing the HTTP headers, the program doesn't check the length of the SOAPAction header and the query string, which can cause a buffer overflow.

 

           - Bug 2: Stack Overflow When parsing the HTTP headers, the program doesn't check the HNAP_AUTH header's length, which can cause a buffer overflow. And no credentials are needed to trigger the bug.

  

 

 Affected Models

 

Model Hardware Revision Affected FW Fixed FW Recommendation
Last Updated
DIR-867-US All Ax Hardware Revisions v1.10b04 & Below  v1.20b10Beta  Download & Update Device 03/09/2020
DIR-878 All Ax Hardware Revisions v1.20b03_Hotfix & Below v1.30b03Beta  Download & Update Device 03/09/2020
DIR-882-US All Ax Hardware Revisions v1.10b04 & Below  v1.30b66Beta  Download & Update Device 05/29/2020


    

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 offer 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 due to 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 product's underside next to the serial number. Alternatively, they can also be found on the device web configuration.