CVE-2018-0475

Cisco IOS and IOS XE Software Cluster Management Protocol Denial of Service Vulnerability

Severity Score

7.4

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability in the implementation of the cluster feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to trigger a denial of service (DoS) condition on an affected device. The vulnerability is due to improper input validation when handling Cluster Management Protocol (CMP) messages. An attacker could exploit this vulnerability by sending a malicious CMP message to an affected device. A successful exploit could allow the attacker to cause the switch to crash and reload or to hang, resulting in a DoS condition. If the switch hangs it will not reboot automatically, and it will need to be power cycled manually to recover.

Una vulnerabilidad en la implementación de la característica del clúster en Cisco IOS Software y Cisco IOS XE Software podría permitir que un atacante adyacente no autenticado desencadene una condición de denegación de servicio (DoS) en un dispositivo afectado. Esta vulnerabilidad se debe a la validación incorrecta de entradas al manejar mensajes CMP (Cluster Management Protocol). Un atacante podría explotar esta vulnerabilidad enviando un mensaje CMP malicioso a un dispositivo afectado. Si se explota con éxito, podría permitir que el atacante provoque que el switch se cierre inesperadamente y se recargue o se bloquee, provocando una denegación de servicio (DoS). Si el switch se bloquea, no se reiniciará auitomáticamente, por lo que será necesario conectarlo manualmente para recuperarse.

*Credits: N/A

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Adjacent

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-11-27 CVE Reserved
2018-10-05 CVE Published
2024-05-15 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (3)

URL	Tag	Source
http://www.securityfocus.com/bid/105404	Third Party Advisory
http://www.securitytracker.com/id/1041737	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-cmp	2019-10-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.0\(2.0.0\) Search vendor "Cisco" for product "Ios" and version "15.0\(2.0.0\)"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				15.0\(2.0.0\) Search vendor "Cisco" for product "Ios Xe" and version "15.0\(2.0.0\)"		-		Affected