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DAP-1860 :: Rev. Ax :: FW v1.04B03 :: CVE-2020-27864 :: Command Injection & CVE-2020-27865 :: Authentication Bypass Vulnerabilities

Overview

On July 1 2020, a 3rd party security researcher team, Trend Micro's Zero Day Initiative, submitted a report accusing the DAP-1860 Hardware Revision A using firmware v1.04b03 of a Command Injection that may lead to and Unauthenticated Remote Code Execution(RCE) vulnerability.  This vulnerability was assigned ZDI-CAN-10880 from Trend Micro.  The Vulnerability was confirmed and a patch was issued too close the issue.  Please find the beta/hotfix release below


3rd Party Report information

 

          - Report provided:  chung96vn of Vietnam's NCSC working with Trend Micro's Zero Day Initiative (ZDI) :: zdi-disclosures _at_ trendmicro _dot_ com

 
          - Reference : (Language directly from ZDI Report)

 

                   - CVE-2020-27864: ZDI-CAN-10880: HNAP Feature HTTP Authorization Command Injection Remote Code Execution Vulnerability

 

                         - Affects DAP-1860 Hardware Revision Ax using firmware v1.04b03 & Below

                         - The HNAP feature is vulnerable in the  HTTP Authorization` header value into a tmp

                                   file prior to password comparison. No input sanitization is performed prior to using

                                  `system()` to write attacker-controlled content to disk.

 

 

                   - CVE-2020-27865:  ZDI-CAN-10894: uhttpd Authentication Bypass Remote Code Execution Vulnerability

   

                         - Affects DAP-1860 Hardware Revision Ax using firmware v1.04b03 & Below

                         - Authentication on device is a broken, if the request contains the string `unauth.cgi`

                                   or `securityquestions.cgi`, authentication is bypassed, allowing remote unauthenticated

                                   attackers to bypass authentication and execute code as the webserver.

 

 

 Affected Models

 

Model Hardware Revision Affected FW Fixed FW Recommendation  Last Updated
DAP-1860 All Ax Hardware Revisions v1.04b03  & Below  Under Investigation v1.04b06 hotfix 01/11/2020

  

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 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.