CVE-2019-20216: OS Command Injection

Published Jan 29, 2020

Updated

D-Link DIR-859 1.05 and 1.06B01 Beta01 devices allow remote attackers to execute arbitrary OS commands via the urn: to the M-SEARCH method in ssdpcgi() in /htdocs/cgibin, because REMOTEPORT is mishandled. The value of the urn: service/device is checked with the strstr function, which allows an attacker to concatenate arbitrary commands separated by shell metacharacters.

Affected Software

3 affected components

dlink Dir-859 Firmware=1.05

dlink Dir-859 Firmware=1.06b01-beta01

Dlink Dir-859

Remediation

Patch Available

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10147

Event History

Jan 29, 2020

CVE Published

via MITRE·02:28 AM

Data Sourced

via MITRE·02:28 AM

Description

Frequently Asked Questions

What is the severity of CVE-2019-20216?

The severity of CVE-2019-20216 is critical with a CVSS score of 9.8 out of 10.

How can remote attackers exploit CVE-2019-20216?

Remote attackers can exploit CVE-2019-20216 by sending a specially-crafted request to the ssdpcgi() function in /htdocs/cgibin using the M-SEARCH method.

Which D-Link devices are affected by CVE-2019-20216?

D-Link DIR-859 firmware versions 1.05 and 1.06B01 Beta01 are affected by CVE-2019-20216.

Is there a fix available for CVE-2019-20216?

Yes, D-Link has released a security announcement with instructions on how to mitigate the vulnerability. It is recommended to update to the latest firmware version.

What is the Common Weakness Enumeration (CWE) ID for CVE-2019-20216?

The CWE ID for CVE-2019-20216 is 78, which indicates Improper Neutralization of Special Elements used in an OS Command (OS Command Injection).