CVE-2017-17411

Linksys WVBR0 User-Agent Command Injection Remote Code Execution Vulnerability

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Linksys WVBR0. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web management portal. The issue lies in the lack of proper validation of user data before executing a system call. An attacker could leverage this vulnerability to execute code with root privileges. Was ZDI-CAN-4892.

Esta vulnerabilidad permite que los atacantes remotos ejecuten código arbitrario en instalaciones vulnerables de Linksys WVBR0. No se requiere autenticación para explotar esta vulnerabilidad. Este error en concreto existe en el portal web de gestión. El problema deriva de la falta de validación correcta de datos de usuario antes de ejecutar una llamada del sistema. Un atacante podría aprovechar esta vulnerabilidad para ejecutar código con privilegios root. Anteriormente era ZDI-CAN-4892.

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Linksys WVBR0. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the web management portal. The issue lies in the lack of proper validation of user data before executing a system call. An attacker could leverage this vulnerability to execute code with root privileges.

*Credits: Ricky "HeadlessZeke" Lawshae

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-12-05 CVE Reserved
2017-12-13 First Exploit
2017-12-18 CVE Published
2024-08-05 CVE Updated
2024-09-02 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

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

CAPEC

References (7)

URL	Tag	Source
http://www.securityfocus.com/bid/102212	Third Party Advisory
https://zerodayinitiative.com/advisories/ZDI-17-973	Third Party Advisory
https://www.thezdi.com/blog/2017/12/13/remote-root-in-directvs-wireless-video-bridge-a-tale-of-rage-and-despair

URL	Date	SRC
https://www.exploit-db.com/exploits/43429	2024-08-05
https://www.exploit-db.com/exploits/43363	2024-08-05
https://github.com/rapid7/metasploit-framework/pull/9336	2024-08-05
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/linux/http/linksys_wvbr0_user_agent_exec_noauth.rb	2017-12-13

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"	Wvbr0 Firmware Search vendor "Linksys" for product "Wvbr0 Firmware"	< 1.0.41 Search vendor "Linksys" for product "Wvbr0 Firmware" and version " < 1.0.41"	-	Affected	in	Linksys Search vendor "Linksys"	Wvbr0 Search vendor "Linksys" for product "Wvbr0"	-	-	Safe