CVE-2018-17208

Severity Score

8.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Los dispositivos de Linksys Velop 1.1.2.187020 permite la inyección de comandos no autenticada, proporcionando a un atacante con acceso root total mediante cgi-bin/zbtest.cgi o cgi-bin/zbtest2.cgi (scripts que se pueden descubrir con binwalk en el firmware, pero no son visibles en la interfaz web). Esto ocurre porque los metacaracteres shell en la cadena de consulta se gestionan de manera incorrecta por ShellExecute, tal y como queda demostrado con la subcadena zbtest.cgi?cmd=levellevel=. Esto también se puede explotar mediante Cross-Site Request Forgery (CSRF).

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-09-19 CVE Reserved
2018-09-19 CVE Published
2024-09-17 CVE Updated
2024-09-17 EPSS Updated
2024-09-17 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://langkjaer.com/velop.html	2024-09-17

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linksys Search vendor "Linksys"	Velop Firmware Search vendor "Linksys" for product "Velop Firmware"	1.1.2.187020 Search vendor "Linksys" for product "Velop Firmware" and version "1.1.2.187020"	-	Affected	in	Linksys Search vendor "Linksys"	Velop Search vendor "Linksys" for product "Velop"	-	-	Safe