CVE-2017-12235

Published Sep 29, 2017

Last updated 4 months ago

Exploit known CVSS high 7.5

Overview

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.
Source: ykramarz@cisco.com
NVD status: Analyzed

Risk scores

CVSS 3.1

Type: Primary
Base score: 7.5
Impact score: 3.6
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: HIGH

CVSS 2.0

Type: Primary
Base score: 7.8
Impact score: 6.9
Exploitability score: 10
Vector string: AV:N/AC:L/Au:N/C:N/I:N/A:C

Known exploits

Data from CISA

Vulnerability name: Cisco IOS Software for Cisco Industrial Ethernet Switches PROFINET Denial-of-Service Vulnerability
Exploit added on: Mar 3, 2022
Exploit action due: Mar 24, 2022
Required action: Apply updates per vendor instructions.

Weaknesses

nvd@nist.gov: NVD-CWE-noinfo
ykramarz@cisco.com: CWE-20

Hype score: Not currently trending

Configurations

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Overview

Risk scores

CVSS 3.1

CVSS 2.0

Known exploits

Weaknesses

Social media

Configurations

References