CVE-2015-6480

Moxa OnCell Central Manager Server MessageBrokerServlet Authentication Bypass Vulnerability

Severity Score

8.3

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The MessageBrokerServlet servlet in Moxa OnCell Central Manager before 2.2 does not require authentication, which allows remote attackers to obtain administrative access via a command, as demonstrated by the addUserAndGroup action.

El servlet MessageBrokerServlet en Moxa OnCell Central Manager en versiones anteriores a 2.2 no requiere autenticación, lo que permite a atacantes remotos obtener acceso administrativo a través de un comando, según lo demostrado por la acción addUserAndGroup.

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Moxa OnCell Central Manager Server. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the MessageBrokerServlet servlet, which does not ensure a user is authenticated prior to accepting commands. An attacker can exploit this condition to perform various actions, including addUserAndGroup, to take full control of the product and achieve code execution on all managed hosts.

*Credits: Andrea Micalizzi (rgod)

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-08-17 CVE Reserved
2015-09-29 CVE Published
2024-08-06 CVE Updated
2024-08-27 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-287: Improper Authentication

CAPEC

References (2)

URL	Tag	Source
http://zerodayinitiative.com/advisories/ZDI-15-452	X_refsource_misc
https://ics-cert.us-cert.gov/advisories/ICSA-15-328-01	Third Party Advisory

URL	Date	SRC

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
Moxa Search vendor "Moxa"		Oncell Central Manager Search vendor "Moxa" for product "Oncell Central Manager"				<= 2.0 Search vendor "Moxa" for product "Oncell Central Manager" and version " <= 2.0"		-		Affected