Support Announcements
COVR-2600R & COVR-3902 Kit :: H/W Rev. Ax :: F/W v1.01B05 :: LAN-Side Remote Code Execution Vulnerability

Overview


On February 28, 2022, a 3rd party security researcher from Cyber Kunlun Lab submitted a report accusing the COVR-3902 using firmware v1.01 of a RCE vulnerability. The vulnerability is an integer overflow vulnerability exists in cgibin(scandir.sgi) code.When handling special data, an integer overflow is caused by improper processing of the path parameter, resulting in remote code execution to the LAN-Side management interface of the device. 
 
The COVR-3902, or COVR-3902-US in the United States, is a Kit including the COVR-2600R WiFi Router and the COVR-1300E WiFi Extender. This vulnerability affects the Router device in the kit, COVR-2600R.
 
The reported vulnerability was confirmed, and a patch has been released to close the security issue.


3rd Party Report information

 

          - Report provided: Cyber Kunlun Lab ::

                                         526251981 _at_ qq _dot_ com

 

            A integer overflow vulnerability exists in cgibin(scandir.sgi) code.When handling special data, an integer overflow is caused by improper processing of the path parameter, resulting in remote code execution. 

    

 Affected Models

 Fixed Bug:
  1   OS command injection vulnerability in HNAP protocol of your product COVR-3902-US in version 1.01B5.
  2   A integer overflow vulnerability exists in cgibin(scandir.sgi) code.

 

Model Hardware Revision Affected FW Fixed FW Recommendation  Last Updated
COVR-2600R All Ax Hardware Revisions v1.01B05 & Below
v101b06 Beta Hotfix** Download & Update 01/31/2024

** Updates release automatic through Web-GUI also

 

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.