CVE-2020-8864: 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 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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
D-Link DIR-867to a version that resolves this vulnerability.Fixed in 1.10B04Patch ZDI-CAN-9471 - Upgrade
Upgrade
D-Link DIR-878to a version that resolves this vulnerability.Fixed in 1.10B04Patch ZDI-CAN-9471 - Upgrade
Upgrade
D-Link DIR-882to a version that resolves this vulnerability.Fixed in 1.10B04Patch ZDI-CAN-9471
Event History
Frequently Asked Questions
What is CVE-2020-8864?
CVE-2020-8864 is a vulnerability that allows network-adjacent attackers to bypass authentication on affected installations of D-Link routers.
Which routers are affected by CVE-2020-8864?
CVE-2020-8864 affects D-Link DIR-867, DIR-878, and DIR-882 routers.
Is authentication required to exploit CVE-2020-8864?
No, authentication is not required to exploit CVE-2020-8864.
What is the severity of CVE-2020-8864?
The severity of CVE-2020-8864 is high, with a severity value of 8.8.
How can I fix the CVE-2020-8864 vulnerability?
To fix the CVE-2020-8864 vulnerability, it is recommended to update the firmware of the affected D-Link routers to the latest version.