CVE-2017-12235

Cisco IOS Software for Cisco Industrial Ethernet Switches PROFINET Denial-of-Service Vulnerability

Severity Score

7.5

*CVSS v3

Exploit Likelihood

7.6%

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

Act

*SSVC

Descriptions

A vulnerability in the implementation of the PROFINET Discovery and Configuration Protocol (PN-DCP) for Cisco IOS 12.2 through 15.6 could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to the improper parsing of ingress PN-DCP Identify Request packets destined to an affected device. An attacker could exploit this vulnerability by sending a crafted PN-DCP Identify Request packet to an affected device and then continuing to send normal PN-DCP Identify Request packets to the device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. This vulnerability affects Cisco devices that are configured to process PROFINET messages. Beginning with Cisco IOS Software Release 12.2(52)SE, PROFINET is enabled by default on all the base switch module and expansion-unit Ethernet ports. Cisco Bug IDs: CSCuz47179.

Una vulnerabilidad en la implementación de un PN-DCP (PROFINET Discovery and Configuration Protocol) para Cisco IOS desde la versión 12.2 hasta la 15.6 podría permitir que un atacante remoto sin autenticar haga que el dispositivo afectado se reinicie, provocando una denegación de servicio (DoS) en consecuencia. Esta vulnerabilidad se debe a un análisis sintáctico incorrecto de los paquetes PN-DCP Identify Request manipulados destinados al dispositivo afectado. Un atacante podría explotar esta vulnerabilidad enviando un paquete PN-DCP Identify Request manipulado al dispositivo afectado y luego continuando el envío de paquetes PN-DCP Identify Request normales al dispositivo. Si se explota con éxito, podría permitir que el atacante consiga que el dispositivo afectado se reinicie, provocando una denegación de servicio. Esta vulnerabilidad afecta a dispositivos Cisco que están configurados para procesar mensajes PROFINET. Empezando con la distribución 12.2(52)SE del software de Cisco IOS, PROFINET está habilitado por defecto en todos los puertos Ethernet para las unidades de expansión y los módulos de switch base. Cisco Bug IDs: CSCuz47179.

A vulnerability in the implementation of the PROFINET Discovery and Configuration Protocol (PN-DCP) for Cisco IOS could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Act

Exploitation

Active

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2017-08-03 CVE Reserved
2017-09-28 CVE Published
2022-03-03 Exploited in Wild
2022-03-24 KEV Due Date
2024-11-15 CVE Updated
2025-03-30 EPSS Updated
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (3)

URL	Tag	Source
http://www.securityfocus.com/bi...	Third Party Advisory
http://www.securitytracker.com/...	Third Party Advisory

1 - 2 of 2

URL	Date	SRC

URL	Date	SRC

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

1 - 1 of 1

Affected Vendors, Products, and Versions (95)

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"				12.2\(52\)se Search vendor "Cisco" for product "Ios" and version "12.2\(52\)se"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				12.2\(52\)se1 Search vendor "Cisco" for product "Ios" and version "12.2\(52\)se1"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				12.2\(55\)se Search vendor "Cisco" for product "Ios" and version "12.2\(55\)se"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				12.2\(55\)se3 Search vendor "Cisco" for product "Ios" and version "12.2\(55\)se3"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				12.2\(55\)se4 Search vendor "Cisco" for product "Ios" and version "12.2\(55\)se4"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				12.2\(55\)se5 Search vendor "Cisco" for product "Ios" and version "12.2\(55\)se5"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				12.2\(55\)se6 Search vendor "Cisco" for product "Ios" and version "12.2\(55\)se6"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				12.2\(55\)se7 Search vendor "Cisco" for product "Ios" and version "12.2\(55\)se7"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				12.2\(55\)se9 Search vendor "Cisco" for product "Ios" and version "12.2\(55\)se9"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				12.2\(55\)se10 Search vendor "Cisco" for product "Ios" and version "12.2\(55\)se10"		-		Affected

1 - 10 of 95