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.

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.

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According to its self-reported version, the Cisco UCS instance NX-OS Software is affected by a denial of service (DoS) vulnerability. It exists in Cisco fabric services due to insufficient error handling of Cisco fabric service messages. An unauthenticated, remote attacker can exploit this issue, via sending crafted Cisco fabric service messages to an affected device, resulting in a Denial of Service event.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

According to its self-reported version, the Cisco FX-OS Software is affected by a denial of service (DoS) vulnerability. It exists in Cisco fabric services due to insufficient error handling of Cisco fabric service messages. An unauthenticated, remote attacker can exploit this issue, via sending crafted Cisco fabric service messages to an affected device, resulting in a Denial of Service event.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

According to its self-reported version, the Cisco NX-OS Software is affected by a denial of service (DoS) vulnerability. It exists in Cisco fabric services due to insufficient error handling of Cisco fabric service messages. An unauthenticated, remote attacker can exploit this issue, via sending crafted Cisco fabric service messages to an affected device, resulting in a Denial of Service event.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

ID	Name	Product	Family	Type	Severity
501372	Cisco FXOS and NX-OS Software Cisco Fabric Services Denial of Service (CVE-2020-3517)	Tenable OT Security	Tenable.ot	Remote	high
142425	Cisco NX-OS Software (UCS) Software Cisco Fabric Services DoS (cisco-sa-fxos-nxos-cfs-dos-dAmnymbd)	Nessus	CISCO	Remote	high
142424	Cisco FXOS Software Cisco Fabric Services DoS (cisco-sa-fxos-nxos-cfs-dos-dAmnymbd)	Nessus	CISCO	Local	high
142423	Cisco NX-OS Software Cisco Fabric Services DoS (cisco-sa-fxos-nxos-cfs-dos-dAmnymbd)	Nessus	CISCO	Combined	high

Detections

Analytics

CVE-2020-3517

high

Tenable Plugins

high

high

high

high