CVE-2020-15632: D-Link DIR-842 HNAP GetCAPTCHAsetting Authentication Bypass Vulnerability
First published: Thu Jul 23 2020(Updated: )
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-842 3.13B05 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of HNAP GetCAPTCHAsetting requests. The issue results from the lack of proper handling of sessions. An attacker can leverage this vulnerability to execute arbitrary code in the context of the device. Was ZDI-CAN-10083.
Credit: zdi-disclosures@trendmicro.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Dlink Dir-842 Firmware | <=3.13b09 | |
| Dlink Dir-842 | =c | |
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Reference Links
Frequently Asked Questions
What is CVE-2020-15632?
CVE-2020-15632 is a vulnerability that allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-842 3.13B05 routers.
How severe is CVE-2020-15632?
CVE-2020-15632 has a severity rating of 8.8 (high).
What is the affected software?
The affected software for CVE-2020-15632 includes D-Link DIR-842 Firmware versions up to and including 3.13b09.
How can I exploit CVE-2020-15632?
CVE-2020-15632 can be exploited by sending a crafted HNAP GetCAPTCHAsetting request to the vulnerable router without requiring authentication.
Are there any references for CVE-2020-15632?
Yes, you can find more information about CVE-2020-15632 at the following references: [Link 1](https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10184) and [Link 2](https://www.zerodayinitiative.com/advisories/ZDI-20-880/).
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