Advisory Details

May 4th, 2023

D-Link DIR-2640 HNAP LoginPassword Authentication Bypass Vulnerability

ZDI-23-544
ZDI-CAN-19549

CVE ID CVE-2023-32152
CVSS SCORE 6.5, AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
AFFECTED VENDORS D-Link
AFFECTED PRODUCTS DIR-2640
VULNERABILITY DETAILS

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-2640 routers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the web management interface, which listens on TCP port 80 by default. A specially crafted login request can cause authentication to succeed without providing proper credentials. 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=SAP10323
DISCLOSURE TIMELINE
  • 2022-12-22 - Vulnerability reported to vendor
  • 2023-05-04 - Coordinated public release of advisory
CREDIT Anonymous
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