Advisory Details

November 3rd, 2022

D-Link DIR-1935 HNAP PrivateLogin Authentication Bypass Vulnerability

ZDI-22-1494
ZDI-CAN-16142

CVE ID CVE-2022-43620
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 DIR-1935
VULNERABILITY DETAILS

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-1935 routers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of HNAP login requests. The issue results from the lack of proper implementation of the authentication algorithm. An attacker can leverage this vulnerability to bypass authentication on the system.

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=SAP10310
DISCLOSURE TIMELINE
  • 2022-06-17 - Vulnerability reported to vendor
  • 2022-11-03 - Coordinated public release of advisory
CREDIT Anonymous
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