• Home Support Forums Security Advisories Shop     English | French
Support Announcement
(non-US) DSL-2888A & DVA-2800 :: H/W Rev. T :: CVE-2020-27862 :: dhttpd Command Injection RCE & & CVE-2020-27863:: dhttpd Authentication Bypass Vulnerability

Overview

 

On June 12, 2020, a 3rd party security researcher team, Trend Micro's Zero Day Initiative, submitted two vulnerability reports accusing the (non-US) DSL-2888A and (non-US) DVA-2800 Hardware Revision T using firmware v3.20_AU. First vulnerability, ZDI-CAN-10911, is a Command Injection Remote Code Execution via dhttpd feature on the devices. The second vulnerability, ZDI-CAN-10912, is Authentication Bypass via dhttpd feature on the devices.  These vulnerabilities were confirmed and patches were issued too close these issues.  Please find the beta/hotfix release below


3rd Party Report information


          - Report provided:  Trend Micro's Zero Day Initiative:: zdi-disclosures _at_ trendmicro _dot_ com

 
          - Reference : (Language directly from ZDI Report)

 

                    - CVE-2020-27862 : ZDI-CAN-10911: D-Link Multiple Routers dhttpd Command Injection Remote Code Execution Vulnerability

 

                         - Affects (non-US) DSL-2888A and (non-US) DVA-2800 Hardware Revision T using firmware v3.20_AU

                         - dhttpd and libstarter.so binaries are vulnerabile to a unauthenticated command injection caused by

                                    lack of input sanitization on the "path" request parameter.

 

                    - CVE-2020-27863 : ZDI-CAN-10912: D-Link Multiple Routers dhttpd Authentication Bypass Vulnerability

 

                          - Affects (non-US) DSL-2888A and (non-US) DVA-2800 Hardware Revision T using firmware v3.20_AU.

                          - dhttpd and libstarter.so binaries are vulnerabile to a authentication bypass caused by lack of path

                                    sanitization prior to URL matching.

                

 Affected Models

 

Model Hardware Revision  Region Affected FW Fixed FW Recommendation  Last Updated
DVA-2800 All Rev. T Hardware Revisions Non-US v2.30_AU v2.33_1.1.47ae56_AU Completed 12/11/2020
DSL-2888A All Rev. T Hardware Revisions Non-US  v2.30_AU v2.32_1.1.47ae55_AU Completed 12/11/2020

  

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.