CVE-2020-27862: D-Link Multiple Routers dhttpd Command Injection Remote Code Execution Vulnerability
First published: Thu Feb 11 2021(Updated: )
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DVA-2800 and DSL-2888A routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the dhttpd service, which listens on TCP port 8008 by default. When parsing the path parameter, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the web server.
Credit: zdi-disclosures@trendmicro.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Dlink Dva-2800 Firmware | =2.30_au | |
| Dlink Dva-2800 | =revision_t | |
| Dlink Dsl-2888a Firmware | =2.30_au | |
| Dlink Dsl-2888a | =revision_t | |
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Reference Links
Frequently Asked Questions
What is CVE-2020-27862?
CVE-2020-27862 is a command injection vulnerability that allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link Multiple Routers.
How severe is CVE-2020-27862?
CVE-2020-27862 has a severity rating of 8.8, which is considered high.
How can an attacker exploit CVE-2020-27862?
An attacker can exploit CVE-2020-27862 by sending specially crafted requests to the dhttpd service on TCP port 8008.
Is authentication required to exploit CVE-2020-27862?
No, authentication is not required to exploit CVE-2020-27862.
Where can I find more information about CVE-2020-27862?
You can find more information about CVE-2020-27862 on the D-Link support announcement (https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10196) and the Zero Day Initiative advisory (https://www.zerodayinitiative.com/advisories/ZDI-20-1426/).
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