Advisory Details

February 24th, 2021

D-Link DAP-2020 WEB_CmdFileList Command Injection Remote Code Execution Vulnerability

CVE ID	CVE-2021-27249
CVSS SCORE	8.8, AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	D-Link
AFFECTED PRODUCTS	DAP-2020
VULNERABILITY DETAILS	This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2020 Wi-Fi access points. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of CGI scripts. 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.
ADDITIONAL DETAILS	D-Link has issued an update to correct this vulnerability. More details can be found at: https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201
DISCLOSURE TIMELINE	2020-09-08 - Vulnerability reported to vendor 2021-02-24 - Coordinated public release of advisory
CREDIT	Anthony Schneiter & Jannis Kirschner from Team SUID (in alphabetical order)

BACK TO ADVISORIES