CVE-2017-6663: Cisco IOS Software and Cisco IOS XE Software Denial-of-Service Vulnerability

CVE-2017-6663 · Severity: critical · CVSS 6.5 · Exploited in the wild · Published 2022-03-03

A vulnerability in the Autonomic Networking feature of Cisco IOS and IOS XE Software allows an unauthenticated, adjacent attacker to cause a denial-of-service (DoS) condition. The flaw enables an attacker to trigger a reload of autonomic nodes on the affected system.

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

Quick answers

Is CVE-2017-6663 exploited in the wild?
Yes. CVE-2017-6663 is known to be exploited in the wild, first recorded on 3 March 2022. Treat it as urgent.
How severe is CVE-2017-6663?
Critical severity, with a CVSS score of 6.5, published 3 March 2022.
Which products and versions are affected?
Cisco IOS Software 15.2(3)E, 15.3(3)S, 15.4(1)S; Cisco IOS XE Software Denali-16.2.1, Denali-16.3.1.
Is there a fix for CVE-2017-6663?
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-2017-6663 attacked?
It is attacked from the adjacent network, in an operating system.
Am I affected by CVE-2017-6663?
Check whether you run Cisco IOS, Cisco IOS XE, Cisco IOS XE Software or one of the others listed. 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 Software 15.2(3)E, 15.3(3)S, 15.4(1)S
  • Cisco IOS XE Software Denali-16.2.1, Denali-16.3.1

Timeline

  • 2017-07-26: disclosed: Original Cisco advisory date (from URL)
  • 2022-03-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog

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