ZDI-20-268: D-Link Multiple Routers HNAP strncmp Incorrect Comparison 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 handling of empty passwords. An attacker can leverage this vulnerability to execute arbitrary code on the router.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| D-Link Multiple Routers |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of ZDI-20-268?
The severity of ZDI-20-268 is classified as critical due to the ability of network-adjacent attackers to bypass authentication.
How do I fix ZDI-20-268?
To fix ZDI-20-268, users should apply the latest firmware update from D-Link for affected router models.
Which routers are affected by ZDI-20-268?
ZDI-20-268 affects D-Link DIR-867, DIR-878, and DIR-882 routers among other multiple routers from D-Link.
Can ZDI-20-268 be exploited remotely?
ZDI-20-268 requires an attacker to be on the same network segment, thus not entirely remote, but still poses a significant risk.
Is authentication required to exploit ZDI-20-268?
No, authentication is not required to exploit ZDI-20-268, making it particularly dangerous.
- agent/references
- agent/type
- agent/softwarecombine
- collector/zdi-advisory
- source/ZDI
- alias/ZDI-20-268
- alias/ZDI-CAN-9471
- alias/CVE-2020-8864
- agent/software-canonical-lookup
- agent/severity
- agent/title
- agent/tags
- agent/description
- agent/event
- agent/source
- vendor/d-link
- canonical/d-link multiple routers