Advisory Details

December 15th, 2020

(0Day) D-Link DCS-960L HNAP LoginPassword Incorrect Implementation of Authentication Algorithm Authentication Bypass Vulnerability

CVE ID
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	DCS-960L
VULNERABILITY DETAILS	This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DCS-960L Wi-Fi cameras. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HNAP login requests. The issue results from improper implementation of the authentication algorithm. An attacker can leverage this vulnerability to bypass authentication and execute code in the context of the device.
ADDITIONAL DETAILS	This vulnerability is being disclosed publicly without a patch in accordance with the ZDI 120 day deadline. 07/20/20 - ZDI reported the vulnerability to D-Link 10/16/20 - ZDI requested a status update 12/09/20 - ZDI notified D-Link of the intention to publish the report as 0-day advisory on 12/15/2020 -- Mitigation: Given the nature of the vulnerability the only salient mitigation strategy is to restrict interaction with the application.
DISCLOSURE TIMELINE	2020-07-20 - Vulnerability reported to vendor 2020-12-15 - Coordinated public release of advisory 2021-09-27 - Advisory Updated
CREDIT	phieulang aka Hoang Le of VietSunShine Cyber Security Services

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