medium
4.3
CWE
399
Advisory Published

cisco-sa-cdp-dos-G8DPLWYG: Cisco FXOS and NX-OS Software Cisco Discovery Protocol Service Denial of Service Vulnerability

First published: Wed Feb 23 2022(Updated: )

A vulnerability in the Cisco Discovery Protocol service of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause the service to restart, resulting in a denial of service (DoS) condition. This vulnerability is due to improper handling of Cisco Discovery Protocol messages that are processed by the Cisco Discovery Protocol service. An attacker could exploit this vulnerability by sending a series of malicious Cisco Discovery Protocol messages to an affected device. A successful exploit could allow the attacker to cause the Cisco Discovery Protocol service to fail and restart. In rare conditions, repeated failures of the process could occur, which could cause the entire device to restart. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cdp-dos-G8DPLWYG This advisory is part of the February 2022 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: February 2022 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication.

Credit: Hou JingYi Qihoo 360 CERT

Affected SoftwareAffected VersionHow to fix
Cisco FX-OS=2.10<2.10.1.179>=2.4=2.5=2.6=2.7=2.8<=2.9<2.9.1.158>=Earlier than 2.3<=2.3<2.3.1.219
2.10.1.179
2.9.1.158
2.3.1.219
Cisco NX-OS=9.3(8)<Nexus 3000 and 9000 Series Switches=8.4(5)<Nexus 7000 Series Switches=7.0(3)I7(10)<Nexus 3000 and 9000 Series Switches
Nexus 3000 and 9000 Series Switches
Nexus 7000 Series Switches
Nexus 3000 and 9000 Series Switches
Cisco Unified Computing System (UCS)=4.2<4.2(1l)1>=Earlier than 4.0=4.0<=4.1<4.1(3h)
4.2(1l)1
4.1(3h)

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Frequently Asked Questions

  • What is the vulnerability ID for this Cisco vulnerability?

    The vulnerability ID for this Cisco vulnerability is cisco-sa-cdp-dos-G8DPLWYG.

  • What is the title of this vulnerability?

    The title of this vulnerability is Cisco FXOS and NX-OS Software Cisco Discovery Protocol Service Denial of Service Vulnerability.

  • What is the severity of this vulnerability?

    The severity of this vulnerability is medium (4.3).

  • Which products are affected by this vulnerability?

    The affected products are Cisco FXOS Software, Cisco NX-OS Software, and Cisco UCS Software.

  • How do I fix the vulnerability?

    To fix this vulnerability, update Cisco FXOS Software to version 2.10.1.179, 2.9.1.158, or 2.3.1.219; update Cisco NX-OS Software to version 9.3(8), 8.4(5), or 7.0(3)I7(10); or update Cisco UCS Software to version 4.2(1l)1 or 4.1(3h).

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