CVE-2018-17208 — HIGH (8.8)

Vulnerability 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.

CVSS Score

8.8

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Linksys	Velop Firmware	1.1.2.187020
Linksys	Velop	-

Related Weaknesses (CWE)

CWE-78

References

https://langkjaer.com/velop.htmlExploitTechnical DescriptionThird Party Advisory
https://langkjaer.com/velop.htmlExploitTechnical DescriptionThird Party Advisory

FAQ

What is CVE-2018-17208?

CVE-2018-17208 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 w...

How severe is CVE-2018-17208?

CVE-2018-17208 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-17208?

Check the references section above for vendor advisories and patch information. Affected products include: Linksys Velop Firmware, Linksys Velop.