HIGH

CVE-2018-17208

CVSS v3

8.8

HIGH

EPSS Score

16.7%

exploit probability

CISA KEV

No

known exploited

Exploitation

SSVC status

Description

Linksys Velop 1.1.2.187020 devices allow unauthenticated command injection, providing an attacker with full root access, via cgi-bin/zbtest.cgi or cgi-bin/zbtest2.cgi (scripts that can be discovered with binwalk on the firmware, but are not visible in the web interface). This occurs because shell metacharacters in the query string are mishandled by ShellExecute, as demonstrated by the zbtest.cgi?cmd=level&level= substring. This can also be exploited via CSRF.

Technical details

Published
9/19/2018

Frequently asked questions

What is CVE-2018-17208?

Linksys Velop 1.1.2.187020 devices allow unauthenticated command injection, providing an attacker with full root access, via cgi-bin/zbtest.cgi or cgi-bin/zbtest2.cgi (scripts that can be discovered with binwalk on the firmware, but are not visible in the web interface). This occurs because shell metacharacters in the query string are mishandled by ShellExecute, as demonstrated by the zbtest.cgi?cmd=level&level= substring. This can also be exploited via CSRF.

Is CVE-2018-17208 actively exploited?

Active exploitation of CVE-2018-17208 has not been confirmed. The EPSS score is 16.7%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-17208?

CVE-2018-17208 has a CVSS v3 base score of 8.8 (HIGH severity).

Is CVE-2018-17208 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.