Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2017-12235

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
29/09/2017
Last modified:
20/04/2025

Description

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete

Base Score 2.0
7.80
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* 12.2 (including) 15.6 (including)
cpe:2.3:h:cisco:industrial_ethernet_2000_16ptc-g-e_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:industrial_ethernet_2000_16ptc-g-l_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:industrial_ethernet_2000_16ptc-g-nx_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:industrial_ethernet_2000_16t67-b_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:industrial_ethernet_2000_16t67p-g-e_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-g-e_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-g-l_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-g-n_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-g-x_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:industrial_ethernet_2000_16tc-l_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:industrial_ethernet_2000_24t67-b_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:industrial_ethernet_2000_4s-ts-g-b_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:industrial_ethernet_2000_4s-ts-g-l_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:industrial_ethernet_2000_4t-b_switch:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools