medium
6.1
CWE
399
Advisory Published
Updated

CVE-2022-20625: 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.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco Firepower Extensible Operating System<2.3.1.219
Cisco Firepower Extensible Operating System>=2.4<2.9.1.158
Cisco Firepower Extensible Operating System>=2.10<2.10.1.179
Cisco Firepower 4110 Next-Generation Firewall
Cisco Firepower 4112 Firmware
Cisco Firepower 4115
Cisco Firepower 4120 Next-Generation Firewall
Cisco Firepower 4125 firmware
Cisco Firepower 4140 Next-Generation Firewall
Cisco Firepower 4145 firmware
Cisco Firepower 4150 Next-Generation Firewall
Cisco Firepower 9300 firmware
Cisco NX-OS=8.2\(7.34\)
Cisco MDS 9132T
Cisco MDS 9148S
Cisco MDS 9148T
Cisco MDS 9222i
Cisco MDS 9250i
Cisco MDS 9396S
Cisco MDS 9396T
Cisco MDS 9500
Cisco MDS 9513 Firmware
Cisco MDS 9706 Firmware
Cisco MDS 9710 Firmware
Cisco MDS 9718 Firmware
Cisco Nexus 7000 Series Switch - n77-f312ck-26
Cisco Nexus 7000 Series n77-f324fq-25
Cisco Nexus 7700 Series Switch
Cisco Nexus 7700 series
Cisco Nexus 7000 Series N77-M312CQ-26L
Cisco Nexus 7000 Series n7k-m324fq-25l
Cisco Nexus 7000 Series Switch (N77-M348XP-23L)
Cisco Nexus 7000 n7k-f248xp-25e
Cisco Nexus 7000 Series Switch - N7K-F306CK-25
Cisco Nexus 7000 Series Switch
Cisco Nexus 7000 Series Switches
Cisco Nexus 7000 Series N7K-M206FQ-23L
Cisco NEXUS 7000 Series Switch (Model N7K-M224XP-23L)
Cisco Nexus 7000 Series n7k-m324fq-25l
Cisco Nexus 7000 Series N7K-M348XP-25L
Cisco Nexus 7000
Cisco Nexus 7000
Cisco Nexus 7000
Cisco Nexus 7000 9-Slot Firmware
Cisco Nexus 7000 Supervisor 1 Firmware
Cisco Nexus 7000 Supervisor 2E
Cisco Nexus 7000 Supervisor 2E Firmware
Cisco Nexus 7700 series
Cisco Nexus 7700 series
Cisco Nexus 7700 series
Cisco Nexus 7700 6-slot
Cisco Nexus 7700 Supervisor 2E Firmware
Cisco Nexus 7700 Supervisor 3E Firmware
Cisco NX-OS=5.2\(1\)sv5\(1.3b\)
Cisco Nexus 1000V for Hyper-V
Cisco Nexus 1000V
Cisco Nexus 1000V for VMware vSphere
Cisco NX-OS=9.3\(8.15\)
Cisco Nexus 9000 Series N9K-C9316D-GX
Cisco Nexus 9332D-GX2B
Cisco Nexus 9348D-GX2A
Cisco Nexus 9000 Series Switch N9K-C93600CD-GX
Cisco Nexus 9364D-GX2A
Cisco Nexus 3048 Firmware
Cisco Nexus 31108PC-V Firmware
Cisco Nexus 31108TC-V Firmware
Cisco Nexus 31128PQ
Cisco Nexus 3132C-Z Firmware
Cisco Nexus 3132Q-V Firmware
Cisco Nexus 3132Q-X/3132Q-XL
Cisco Nexus 3132Q-XL Firmware
Cisco Nexus 3164Q Firmware
Cisco Nexus 3172PQ/PQ-XL
Cisco Nexus 3172PQ-XL Firmware
Cisco Nexus 3172TQ-XL Firmware
Cisco Nexus 3232C
Cisco Nexus 3264C-E Firmware
Cisco Nexus 3264Q Firmware
Cisco Nexus 3408-S Firmware
Cisco Nexus 34180YC Firmware
Cisco Nexus 3432D-S Firmware
Cisco Nexus 3464C Firmware
Cisco Nexus 3524-xl
Cisco Nexus 3524-XL Firmware
Cisco Nexus 3548-X/XL
Cisco Nexus 3548-X/XL
Cisco Nexus 36180YC-R Firmware
Cisco Nexus 3636C-R Firmware
Cisco Nexus 92160YC Switch
Cisco Nexus 92300YC Firmware
Cisco Nexus 92304QC Switch
Cisco Nexus 92348GC-X Switch
Cisco Nexus 9236C Switch
Cisco Nexus 9272Q Switch
Cisco Nexus
Cisco Nexus 93108TC-FX Switch
Cisco Nexus 93108TC-FX3P Firmware
Cisco Nexus 93120TX Firmware
Cisco Nexus 93216TC-FX2 Firmware
Cisco Nexus 9332C Firmware
Cisco Nexus 9336C-FX2 Firmware
Cisco Nexus 9336C-FX2-E Firmware
Cisco Nexus 9348GC-FXP Firmware
Cisco Nexus 9364c-h1
Cisco Nexus 9364C-GX Firmware
Cisco Nexus 9504 firmware
Cisco Nexus 9508
Cisco Nexus 9516 firmware
Cisco NX-OS=4.0\(1a\)a
Cisco UCS 64108
Cisco UCS 6454 Fabric Interconnect
Cisco NX-OS=4.1\(3f\)c
Cisco UCS 6248UP
Cisco UCS 6296UP
Cisco UCS 6324 firmware
Cisco UCS 6332
Cisco UCS 6332-16UP

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2022-20625?

    The severity of CVE-2022-20625 is considered high due to its denial of service (DoS) potential.

  • How do I fix CVE-2022-20625?

    To fix CVE-2022-20625, update the affected Cisco FXOS Software or Cisco NX-OS Software to the latest patched version.

  • Which Cisco products are affected by CVE-2022-20625?

    CVE-2022-20625 affects various versions of Cisco Firepower Extensible Operating System and specific releases of Cisco NX-OS.

  • Can CVE-2022-20625 be exploited remotely?

    No, CVE-2022-20625 requires an unauthenticated, adjacent attacker to exploit the vulnerability.

  • What are the consequences of exploiting CVE-2022-20625?

    Exploiting CVE-2022-20625 can lead to a restart of the Cisco Discovery Protocol service, creating a denial of service condition.

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