CVE-2017-12234: Cisco IOS Software Common Industrial Protocol Request Denial-of-Service Vulnerability

CVE-2017-12234 · Severity: critical · CVSS 7.5 · Exploited in the wild · Published 2022-03-03

A vulnerability in the Common Industrial Protocol (CIP) feature of Cisco IOS allows an unauthenticated, remote attacker to cause a denial of service (DoS) by sending crafted CIP packets. The issue stems from improper parsing of these packets, which triggers a device reload.

Technologies: Cisco IOS, Cisco Ios Software, Cisco IOS XE. Vendors: Cisco.

Quick answers

Is CVE-2017-12234 exploited in the wild?
Yes. CVE-2017-12234 is known to be exploited in the wild, first recorded on 3 March 2022. Treat it as urgent.
How severe is CVE-2017-12234?
Critical severity, with a CVSS score of 7.5, published 3 March 2022.
Which products and versions are affected?
Cisco IOS 12.4 through 15.6.
Is there a fix for CVE-2017-12234?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2017-12234 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2017-12234?
Check whether you run Cisco IOS, Cisco Ios Software or Cisco IOS XE. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Cisco IOS 12.4 through 15.6

Timeline

  • 2017-09-27: advisory: Original Cisco security advisory published
  • 2022-03-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2022-03-03: disclosed: NVD publication date

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.