OS Command Injection in DIR-859 - CVE-2019-20216
Published: January 29, 2020
Vulnerability identifier: #VU24733
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2019-20216
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: D-Link
Affected software:
DIR-859
DIR-859
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to the REMOTE_PORT is mishandled in the "ssdpcgi()" function in "/htdocs/cgibin". A remote unauthenticated attacker can execute arbitrary OS commands on the target system via urn: to the M-SEARCH method.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2019-20216
Install updates from vendor's website.
Sources
- https://medium.com/@s1kr10s/d-link-dir-859-rce-unauthenticated-cve-2019-20216-cve-2019-20217-en-6bca043500ae
- https://medium.com/@s1kr10s/d-link-dir-859-rce-unauthenticated-cve-2019-20216-cve-2019-20217-es-e11ca6168d35
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10147