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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Detections

Analytics

Cisco FXOS and NX-OS Software Cisco Fabric Services Denial of Service (CVE-2020-3517)

high Tenable OT Security Plugin ID 501372

Version 1.1

Version 1.0

Version 1.1 Jul 26, 2023, 2:10 PM CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:U/RL:OF/RC:C". "CVSSv3 temporal vector" set to "CVSS:3.0/E:U/RL:O/RC:C") Exploit attributes ("Exploit available" set to "False") Plugin Feed: 202307261410
Version 1.0 Jul 25, 2023, 7:12 PM New Plugin Feed: 202307251912