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Cisco Bug: CSCvt46838 - Cisco FXOS and NX-OS Software Cisco Fabric Services Denial of Service Vulnerability

Last Modified

Aug 31, 2020

Products (1)

  • Cisco Unified Computing System

Known Affected Releases

4.1(1)

Description (partial)

Symptom:
A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated attacker to cause process crashes, which could result in a denial of service (DoS) condition on an affected device. The attack vector is configuration dependent and could be remote or adjacent. For more information about the attack vector, see the Details section of this advisory.

The vulnerability is due to insufficient error handling when the affected software parses Cisco Fabric Services messages. An attacker could exploit this vulnerability by sending malicious Cisco Fabric Services messages to an affected device. A successful exploit could allow the attacker to cause a reload of an affected device, which could result in a DoS condition.

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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-nxos-cfs-dos-dAmnymbd

Conditions:
Please refer to the Security Advisory.
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Bug Details Include

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