Advisory Details

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2622. Authentication is required to exploit this vulnerability.

The specific flaw exists within the CLI service, which listens on TCP port 23. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root.

01/20/23 – ZDI reported the vulnerability to the vendor.

06/05/23 – The vendor informed us that some of the reports were missing.

06/19/23 – ZDI sent over the missing reports.

08/24/23 – The vendor released an update for DAP-2622, but this case was missing.

08/31/23 – ZDI informed the vendor that the case was not included in the update.

09/29/23 – The ZDI informed the vendor that the case will be published as a zero-day advisory on 10/04/23.

-- Mitigation: Given the nature of the vulnerability, the only salient mitigation strategy is to restrict interaction with the application.

• 2023-01-20 - Vulnerability reported to vendor
• 2023-10-04 - Coordinated public release of advisory