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MEDIUM · 5.3

CVE-2023-20012

A vulnerability in the CLI console login authentication of Cisco Nexus 9300-FX3 Series Fabric Extender (FEX) when used in UCS Fabric Interconnect deployments could allow an unauthenticated attacker wi...

Vulnerability Description

A vulnerability in the CLI console login authentication of Cisco Nexus 9300-FX3 Series Fabric Extender (FEX) when used in UCS Fabric Interconnect deployments could allow an unauthenticated attacker with physical access to bypass authentication. This vulnerability is due to the improper implementation of the password validation function. An attacker could exploit this vulnerability by logging in to the console port on an affected device. A successful exploit could allow the attacker to bypass authentication and execute a limited set of commands local to the FEX, which could cause a device reboot and denial of service (DoS) condition.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
CiscoNexus 93180Yc-Fx3S Firmware-
CiscoNexus 93180Yc-Fx3S-
CiscoNexus 93180Yc-Fx3 Firmware-
CiscoNexus 93180Yc-Fx3-
CiscoUcs Central Software>= 4.2, < 4.2\(2d\)
CiscoUcs 6536 Firmware-
CiscoUcs 6536-
CiscoUcs 64108 Firmware-
CiscoUcs 64108-
CiscoUcs 6454 Firmware-
CiscoUcs 6454-

Related Weaknesses (CWE)

CWE-287

References

FAQ

What is CVE-2023-20012?

CVE-2023-20012 is a vulnerability with a CVSS score of 5.3 (MEDIUM). A vulnerability in the CLI console login authentication of Cisco Nexus 9300-FX3 Series Fabric Extender (FEX) when used in UCS Fabric Interconnect deployments could allow an unauthenticated attacker wi...

How severe is CVE-2023-20012?

CVE-2023-20012 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2023-20012?

Check the references section above for vendor advisories and patch information. Affected products include: Cisco Nexus 93180Yc-Fx3S Firmware, Cisco Nexus 93180Yc-Fx3S, Cisco Nexus 93180Yc-Fx3 Firmware, Cisco Nexus 93180Yc-Fx3, Cisco Ucs Central Software.