8.8
CWE
787 121 20
Advisory Published
Updated

CVE-2022-20824: Cisco FXOS and NX-OS Software Cisco Discovery Protocol Denial of Service and Arbitrary Code Execution Vulnerability

First published: Thu Aug 25 2022(Updated: )

A vulnerability in the Cisco Discovery Protocol feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code with root privileges or cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper input validation of specific values that are within a Cisco Discovery Protocol message. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to execute arbitrary code with root privileges or cause the Cisco Discovery Protocol process to crash and restart multiple times, which would cause the affected device to reload, resulting in a DoS condition. Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco MDS 9506 Firmware
Cisco MDS 9500
Cisco MDS 9513 Firmware
Cisco MDS 9513 Firmware
Cisco MDS 9706 Firmware
Cisco MDS 9706 Firmware
Cisco MDS 9710 Firmware
Cisco MDS 9710 Firmware
Cisco MDS 9718 Firmware
Cisco MDS 9718 Firmware
Cisco Nexus 1000V for VMware vSphere
Cisco Nexus 1000V
Cisco Nexus 3016
Cisco Nexus 3016Q Firmware
Cisco Nexus 3016Q Firmware
Cisco Nexus 3016Q Firmware
Cisco Nexus 3048 Firmware
Cisco Nexus 3048 Firmware
Cisco Nexus 3064-32T Firmware
Cisco Nexus 3064 Firmware
Cisco Nexus 3064X Firmware
Cisco Nexus 3064
Cisco Nexus 3064-32T Firmware
Cisco Nexus 3064
Cisco Nexus 3064X Firmware
Cisco Nexus 3064x
Cisco Nexus 3064-32T Firmware
Cisco Nexus 3064
Cisco Nexus 3064-X Firmware
Cisco Nexus 3064-X Firmware
Cisco Nexus 3100V Firmware
Cisco Nexus 3100 Firmware
Cisco Nexus 3100 Firmware
Cisco Nexus 3100V Firmware
Cisco Nexus 3100 Firmware
Cisco Nexus 3100-Z firmware
Cisco Nexus 3100 Firmware
Cisco Nexus 3100V Firmware
Cisco Nexus 31108PC-V Firmware
Cisco Nexus 31108PC-V Firmware
Cisco Nexus 31108PV-V
Cisco Nexus 31108PV-V Firmware
Cisco Nexus 31108TC-V
Cisco Nexus 31108TC-V Firmware
Cisco Nexus 31128PQ
Cisco Nexus 31128PQ
Cisco Nexus 3132C-Z Firmware
Cisco Nexus 3132C-Z Firmware
Cisco Nexus 3132Q-X Firmware
Cisco Nexus 3132Q-XL
Cisco Nexus 3132Q-V Firmware
Cisco Nexus 3132Q-V Firmware
Cisco Nexus 3132Q-X/XL Firmware
Cisco Nexus 3132Q-X/3132Q-XL
Cisco Nexus 3132Q-X/XL Firmware
Cisco Nexus 3132Q-X/3132Q-XL
Cisco Nexus 3132Q-XL Firmware
Cisco Nexus 3132Q-XL Firmware
Cisco Nexus 3164Q Firmware
Cisco Nexus 3164Q Firmware
Cisco Nexus 3172 Firmware
Cisco Nexus 3172 Firmware
Cisco Nexus 3172 Firmware
Cisco Nexus 3172PQ/PQ-XL
Cisco Nexus 3172PQ/PQ-XL
Cisco Nexus 3172PQ-XL Firmware
Cisco Nexus 3172PQ/PQ-XL Firmware
Cisco Nexus 3172PQ/PQ-XL
Cisco Nexus Firmware
Cisco Nexus 3172TQ Firmware
Cisco Nexus 3172 Firmware
Cisco Nexus 3172TQ-XL
Cisco Nexus 3172TQ-XL Firmware
Cisco Nexus 3172TQ-XL Firmware
Cisco Nexus 3200
Cisco Nexus 3200
Cisco Nexus 3232C
Cisco Nexus 3232C
Cisco Nexus 3232C
Cisco Nexus 3232C
Cisco Nexus 3264C-E Firmware
Cisco Nexus 3264C-E Firmware
Cisco Nexus 3264Q Firmware
Cisco Nexus 3264Q Firmware
Cisco Nexus 3400 Firmware
Cisco Nexus 3400 Firmware
Cisco Nexus 3408-S Firmware
Cisco Nexus 3408-S Firmware
Cisco Nexus 34180YC Firmware
Cisco Nexus 34180YC Firmware
Cisco Nexus 34200YC-SM Firmware
Cisco Nexus 34200YC-SM Firmware
Cisco Nexus 3432D-S Firmware
Cisco Nexus 3432D-S Firmware
Cisco Nexus 3464C Firmware
Cisco Nexus 3464C Firmware
Cisco Nexus 3524-XL Firmware
Cisco Nexus 3524-xl
Cisco Nexus 3524-XL Firmware
Cisco Nexus 3524-xl
Cisco Nexus 3524-X/XL Firmware
Cisco Nexus 3524-x/xl
Cisco Nexus 3524-X/XL Firmware
Cisco Nexus 3524-X/XL
Cisco Nexus 3548-X/XL Firmware
Cisco Nexus 3548-X/XL Firmware
Cisco Nexus 3548-X/XL Firmware
Cisco Nexus 3548-X/XL
Cisco Nexus 3548-X/XL Firmware
Cisco Nexus 3548-x/xl
Cisco Nexus 3548-X/XL Firmware
Cisco Nexus 3548-X/XL
Cisco Nexus 36180YC-R Firmware
Cisco Nexus 36180YC-R Firmware
Cisco Nexus 3636C-R Firmware
Cisco Nexus 3636C-R Firmware
Cisco Nexus 5548P Firmware
Cisco Nexus 5548P Firmware
Cisco Nexus 5548UP
Cisco Nexus 5548UP Firmware
Cisco Nexus 5596T Firmware
Cisco Nexus 5596T Firmware
Cisco Nexus 5596UP
Cisco Nexus 5596UP Firmware
Cisco Nexus 5600 Series Switch Firmware
Cisco Nexus 5600 Firmware
Cisco Nexus 56128p Firmware
Cisco 56128p
Cisco Nexus 5624Q Firmware
Cisco Nexus 5624Q Firmware
Cisco Nexus 5648Q Firmware
Cisco Nexus 5648Q Firmware
Cisco Nexus 5672UP Firmware
Cisco Nexus 5672UP-16G
Cisco Nexus 5672UP Firmware
Cisco Nexus 5672UP-16G Firmware
Cisco Nexus 5696Q Firmware
Cisco Nexus 5696Q Firmware
Cisco Nexus 6000 firmware
Cisco Nexus 6000 Firmware
Cisco Nexus 6001T Firmware
Cisco Nexus 6001 Firmware
Cisco Nexus 6001P Firmware
Cisco Nexus 6001P Firmware
Cisco Nexus 6001T Firmware
Cisco Nexus 6001T Firmware
Cisco Nexus 6004X Firmware
Cisco Nexus 6004 Firmware
Cisco Nexus 6004X Firmware
Cisco Nexus 6004X Firmware
Cisco Nexus 7000 Firmware
Cisco Nexus 7000 Series Switch
Cisco Nexus 7000 Supervisor 1 Firmware
Cisco Nexus 7000 Supervisor 1 Firmware
Cisco Nexus 7000 Supervisor 2 Firmware
Cisco Nexus 7000 Supervisor 2E
Cisco Nexus 7000 Supervisor 2E
Cisco Nexus 7000 Supervisor 2E Firmware
Cisco Nexus 7004 Firmware
Cisco Nexus 7004 Firmware
Cisco Nexus 7009 Firmware
Cisco Nexus 7009 Firmware
Cisco Nexus 7010 Firmware
Cisco Nexus 7010 Firmware
Cisco Nexus 7018 Firmware
Cisco Nexus 7018 Firmware
Cisco Nexus 7700 18-slot firmware
Cisco Nexus 7700 Series Switch
Cisco Nexus 7700 Supervisor 2E Firmware
Cisco Nexus 7700 Supervisor 2E Firmware
Cisco Nexus 7700 Supervisor 3E Firmware
Cisco Nexus 7700 Supervisor 3E Firmware
Cisco Nexus 7702 firmware
Cisco Nexus 7702 firmware
Cisco Nexus 7706 firmware
Cisco Nexus 7700
Cisco Nexus 7710 Firmware
Cisco Nexus 7710 Firmware
Cisco Nexus 7718 firmware
Cisco Nexus 7718 firmware
Cisco Nexus 9000 Series Firmware
Cisco Nexus 9000 Series
Cisco Nexus
Cisco NX-OS Nexus 9000 Series
Cisco Nexus 9200 firmware
Cisco Nexus 9200 firmware
Cisco Nexus 92160YC-X Firmware
Cisco Nexus 92160YC Switch
Cisco Nexus 9221C Firmware
Cisco Nexus 9221C Firmware
Cisco Nexus 92300YC Firmware
Cisco Nexus 92300YC Firmware
Cisco Nexus 92304QC Firmware
Cisco Nexus 92304QC Firmware
Cisco Nexus 92348GC-X Firmware
Cisco Nexus 92348GC-X Switch
Cisco Nexus 9236C Firmware
Cisco Nexus 9236C
Cisco Nexus 9272Q Firmware
Cisco Nexus 9272Q Switch
Cisco Nexus 9300 Firmware
Cisco Nexus 9300 Firmware
Cisco Nexus 93108TC-EX Firmware
Cisco Nexus
Cisco Nexus 93108TC-EX Firmware
Cisco Nexus 93108TC-EX-24 Firmware
Cisco Nexus 93108TC-FX Switch
Cisco Nexus 93108TC-FX Switch
Cisco Nexus 93108TC-FX Firmware
Cisco Nexus 93108TC-FX Switch
Cisco Nexus 93108TC-FX3P Firmware
Cisco Nexus 93108TC-FX3P Firmware
Cisco Nexus 93120TX Firmware
Cisco Nexus 93120TX Firmware
ABB Nexus-3-2128 Firmware
Cisco Nexus 93128 Firmware
Cisco Nexus 93128 Firmware
Cisco Nexus 93128TX
Cisco Nexus 9316D-GX Firmware
Cisco Nexus 9316D-GX Firmware
Cisco Nexus 93180LC-EX Firmware
Cisco Nexus 9000 Series Switch
Cisco Nexus 93180TC-EX Firmware
Cisco Nexus 93180TC-EX Firmware
Cisco Nexus 93180YC-EX-24 Firmware
Cisco Nexus 93180YC-EX-24
Cisco Nexus 93180YC-EX-24
Cisco Nexus 93180YC-EX-24 Firmware
Cisco Nexus 93180YC-FX Firmware
Cisco Nexus 93180YC-FX Firmware
Cisco Nexus 93180YC-FX Firmware
Cisco Nexus 93180YC-FX-24 Firmware
Cisco Nexus 93180YC-FX3S Firmware
Cisco Nexus 93180YC-FX3 Firmware
Cisco Nexus 93180YC-FX3S Firmware
Cisco Nexus 93180YC-FX3S Firmware
Cisco Nexus 93216TC-FX2 Firmware
Cisco Nexus 93216TC-FX2 Firmware
Cisco Nexus 93240YC-FX2
Cisco Nexus 93240YC-FX2 Firmware
Cisco Nexus 9332C Firmware
Cisco Nexus 9332C Firmware
Cisco Nexus 9332pq
Cisco Nexus 9332PQ Firmware
Cisco Nexus 93360YC-FX2 Firmware
Cisco Nexus 93360YC-FX2
Cisco Nexus 9336C-FX2 Firmware
Cisco Nexus 9336C-FX2 Firmware
Cisco Nexus 9336C-FX2-E Firmware
Cisco Nexus 9336C-FX2-E Firmware
Cisco Nexus 9336PQ Firmware
Cisco Nexus N9336PQ
Cisco Nexus 9348GC-FXP Firmware
Cisco Nexus 9348GC-FXP Firmware
Cisco Nexus 93600CD-GX Firmware
Cisco Nexus 93600CD-GX Firmware
Cisco Nexus 9364C Firmware
Cisco Nexus 9364c-h1
Cisco Nexus 9364C-GX
Cisco Nexus 9364C-GX Firmware
Cisco Nexus 9372TX Firmware
Cisco Nexus 9372PX-E
Cisco Nexus 9372PX-E Firmware
Cisco Nexus 9372PX-E Firmware
Cisco Nexus 9372TX Firmware
Cisco Nexus 9372TX Firmware
Cisco Nexus 9372TX Firmware
Cisco Nexus 9372TX-E Switch
Cisco Nexus 9396PX Firmware
Cisco Nexus 9396PX Firmware
Cisco Nexus 9396TX Firmware
Cisco Nexus 9396TX Firmware
Cisco Nexus 9500 Supervisor A Firmware
Cisco Nexus 9500 Supervisor A
Cisco Nexus 9500 Supervisor A+ Firmware
Cisco Nexus 9500 Supervisor A+
Cisco Nexus 9500 Supervisor B firmware
Cisco Nexus 9500 Supervisor B firmware
Cisco Nexus 9500 Supervisor B+ Firmware
Cisco Nexus 9500 Supervisor B+
Cisco Nexus 9500 firmware
Cisco Nexus 9500R Firmware
Cisco Nexus 9504 Firmware
Cisco Nexus 9504 Firmware
Cisco Nexus 9508 Firmware
Cisco Nexus 9508
Cisco Nexus 9516 firmware
Cisco Nexus 9516 firmware

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Frequently Asked Questions

  • What is the severity of CVE-2022-20824?

    CVE-2022-20824 has a high severity rating due to its potential to allow arbitrary code execution or a denial of service.

  • How do I fix CVE-2022-20824?

    To fix CVE-2022-20824, update the affected Cisco firmware to the latest version that addresses this vulnerability.

  • Which Cisco devices are affected by CVE-2022-20824?

    CVE-2022-20824 affects various models in the Cisco MDS and Nexus series that utilize Cisco Discovery Protocol.

  • What types of attacks can be executed using CVE-2022-20824?

    An attacker can execute arbitrary code with root privileges or cause a denial of service on affected devices via CVE-2022-20824.

  • Is there a workaround for CVE-2022-20824?

    As of now, Cisco recommends upgrading the firmware as the primary method for mitigating CVE-2022-20824, but specific workarounds may vary.

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