A vulnerability in the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco NX-OS Software for the Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an unauthenticated, adjacent attacker to cause the IS-IS process to unexpectedly restart, which could cause an affected device to reload. This vulnerability is due to insufficient input validation when parsing an ingress IS-IS packet. An attacker could exploit this vulnerability by sending a crafted IS-IS packet to an affected device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition due to the unexpected restart of the IS-IS process, which could cause the affected device to reload. Note: The IS-IS protocol is a routing protocol. To exploit this vulnerability, an attacker must be Layer 2 adjacent to the affected device.

Metrics

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Cisco
  • Nexus 3048
  • Nexus 31108pc-v
  • Nexus 31108tc-v
  • Nexus 31128pq
  • Nexus 3132c-z
  • Nexus 3132q-v
  • Nexus 3132q-xl
  • Nexus 3164q
  • Nexus 3172pq
  • Nexus 3172pq-xl
  • Nexus 3172tq
  • Nexus 3172tq-32t
  • Nexus 3172tq-xl
  • Nexus 3232
  • Nexus 3264c-e
  • Nexus 3264q
  • Nexus 3408-s
  • Nexus 34180yc
  • Nexus 34200yc-sm
  • Nexus 3432d-s
  • Nexus 3464c
  • Nexus 3524
  • Nexus 3524-x
  • Nexus 3524-xl
  • Nexus 3548
  • Nexus 3548-x
  • Nexus 3548-xl
  • Nexus 36180yc-r
  • Nexus 9232e
  • Nexus 92348gc-x
  • Nexus 9408
  • Nexus 9504
  • Nexus 9508
  • Nexus 9516
  • Nx-os

Configuration 1 [-]

AND
cpe:2.3:o:cisco:nx-os:10.3\(2\):*:*:*:*:*:*:*
OR cpe:2.3:h:cisco:nexus_3048:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_31108pc-v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_31108tc-v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_31128pq:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3132c-z:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3132q-v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3132q-xl:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3164q:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3172pq:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3172pq-xl:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3172tq:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3172tq-32t:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3172tq-xl:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3232:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3264c-e:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3264q:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3408-s:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_34180yc:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_34200yc-sm:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3432d-s:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3464c:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3524:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3524-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3524-xl:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3548:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3548-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3548-xl:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_36180yc-r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9232e:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_92348gc-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9408:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9504:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9508:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9516:-:*:*:*:*:*:*:*

No data.

References
Link Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-n3_9k-isis-dos-FTCXB4Vb cve-icon cve-icon
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2023-08-23T18:19:45.317Z

Updated: 2024-08-02T09:05:36.905Z

Reserved: 2022-10-27T18:47:50.362Z

Link: CVE-2023-20169

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-08-23T19:15:07.893

Modified: 2024-11-21T07:40:44.107

Link: CVE-2023-20169

cve-icon Redhat

No data.