ZDI-20-267: D-Link Multiple Routers HNAP PrivateLogin Incorrect Implementation of Authentication Algorithm Authentication Bypass Vulnerability
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-867, DIR-878, and DIR-882 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 escalate privileges and execute code in the context of the router.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| D-Link Multiple Routers |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-20-267?
ZDI-20-267 has been designated a high severity vulnerability due to its potential to allow unauthorized access to router configurations.
How do I fix ZDI-20-267?
To fix ZDI-20-267, update your D-Link DIR-867, DIR-878, or DIR-882 routers to the latest firmware version as recommended by D-Link.
Which devices are affected by ZDI-20-267?
ZDI-20-267 affects D-Link DIR-867, DIR-878, and DIR-882 routers among other D-Link multiple routers.
Can ZDI-20-267 be exploited remotely?
Yes, ZDI-20-267 can be exploited by network-adjacent attackers without authentication.
What is the nature of the vulnerability in ZDI-20-267?
The nature of the vulnerability in ZDI-20-267 lies in improper handling of HNAP login requests, allowing bypass of authentication.
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