This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-867, DIR-878, and DIR-882 routers with firmware 1.10B04. 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 handling of empty passwords. An attacker can leverage this vulnerability to execute arbitrary code on the router. Was ZDI-CAN-9471.

Recent assessments:

horshark at March 25, 2020 2:35pm UTC reported:

Description

Arbitrary code can be executed on the rooter due to bad login requests handling (when the password is empty.)
That can allow the attacker to get inside the network and eventually retrieve information using the router itself.

Versions

Routers: DIR-867, DIR-878, and DIR-882
Firmware: 1.10B04

Assessed Attacker Value: 4
Assessed Attacker Value: 4Assessed Attacker Value: 2