CVE-2020-8864: D-Link Multiple Routers HNAP strncmp Incorrect Comparison Authentication Bypass Vulnerability
First published: Mon Mar 23 2020(Updated: )
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.
Credit: zdi-disclosures@trendmicro.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Dlink Dir-878 Firmware | <=1.20b03 | |
| Dlink Dir-878 | ||
| Dlink Dir-882 Firmware | <=1.10b04 | |
| Dlink Dir-882 | ||
| D-Link Multiple Routers | <=1.10b04 | |
| D-Link Multiple Routers | ||
| D-Link Multiple Routers |
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Reference Links
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.
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