ZDI-20-881: D-Link Multiple Routers HNAP GetCAPTCHAsetting 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 requests. The issue results from incorrect string matching logic when accessing protected pages. 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-20-881?
The severity of ZDI-20-881 is considered high due to the ability for network-adjacent attackers to bypass authentication.
How do I fix ZDI-20-881?
To fix ZDI-20-881, ensure that your D-Link router firmware is updated to the latest version provided by D-Link.
What devices are affected by ZDI-20-881?
ZDI-20-881 affects D-Link DIR-867, DIR-878, and DIR-882 routers.
Can ZDI-20-881 be exploited remotely?
ZDI-20-881 cannot be exploited remotely as it requires network-adjacent access to the affected routers.
What type of vulnerability is ZDI-20-881?
ZDI-20-881 is an authentication bypass vulnerability associated with HNAP request handling.
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