CVE-2017-12235
CVE-2017-12235
In short
A flaw in Cisco IOS devices allows an attacker to crash the device by sending specially crafted PROFINET messages, causing it to temporarily stop working. This affects network switches that have PROFINET enabled, making them vulnerable to denial-of-service attacks from the internet.
Technical detail
The vulnerability exists in improper parsing of PN-DCP Identify Request packets in Cisco IOS 12.2–15.6. An unauthenticated remote attacker can exploit this by sending a malformed PN-DCP packet followed by normal packets, triggering a device reload and denial of service. The attack requires the device to be configured to process PROFINET messages (enabled by default on switch modules).
Summary generated and translated by AI from the official 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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
n/a · Cisco IOSWant to know if your infrastructure is exposed to this?
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