R15 / M15: Open DNS Resolver Vulnerability

13 september, 2022

On August 25, 2022, a 3rd party security researcher reported the EAGLE PRO AI R15 hardware revision Ax with firmware version v1.06.07 with an open DNS Resolver vulnerability.


As soon as D-Link was made aware of the reported security issues, we promptly started our investigation and began developing security patches.


D-Link takes the issues of network security and user privacy very seriously. We have a dedicated task force and product management team on call to address evolving security issues and implement appropriate security measures.


Report information  


          3rd Party

          Alexander Traud :: pabstraud _at_ compuserve _dot_ com



When placed in "Wi-Fi Access Point" Mode an attack vector can be exploited in it's Open DNS Resolver


Not in the mode "Router" but "Access Point" (Web interface Settings Operation Mode Bridge button Save) the device still acts as a DNS proxy (53/udp and 53/tcp). Such an an Open DNS Resolver [1] is considered a security issue. For example, I deploy the device in a hotel. An attacker can use that DNS proxy to circumvent a Captive Portal of that hotel Wi-Fi. This attack is known and ready to exploit by tools existing on the Internet, like HTTP-over-SSH-over-DNS services, called DNS Tunneling [2]. With that attack scenario, I calculated a HIGH rating in CVSS 3.1.      

Affected Models



Model Hardware Revision Region Affected FW Fixed FW Recommendation Last Updated
R15 All A Hardware Revisions US v1.06.07& Below v1.06.11HotFix Beta Manually update to Hotfix Beta via Web Interface
M15 All A Hardware Revisions US v1.06.07& Below v1.06.11HotFix Beta Manually update to Hotfix Beta via Web Interface 09/13/2022


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.