Cisco Nexus 3000 and 9000 Series Switches SFTP Server File Access (CVE-2023-20115)

medium Tenable OT Security Plugin ID 501658


The remote OT asset is affected by a vulnerability.


A vulnerability in the SFTP server implementation for Cisco Nexus 3000 Series Switches and 9000 Series Switches in standalone NX-OS mode could allow an authenticated, remote attacker to download or overwrite files from the underlying operating system of an affected device. This vulnerability is due to a logic error when verifying the user role when an SFTP connection is opened to an affected device. An attacker could exploit this vulnerability by connecting and authenticating via SFTP as a valid, non-administrator user. A successful exploit could allow the attacker to read or overwrite files from the underlying operating system with the privileges of the authenticated user. There are workarounds that address this vulnerability.

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Refer to the vendor advisory.

See Also

Plugin Details

Severity: Medium

ID: 501658

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 9/19/2023

Updated: 9/20/2023

Risk Information


Risk Factor: Low

Score: 2.5


Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

CVSS Score Source: CVE-2023-20115


Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:nx-os:10.1%281%29, cpe:/o:cisco:nx-os:10.1%282%29, cpe:/o:cisco:nx-os:10.1%282t%29, cpe:/o:cisco:nx-os:10.2%281%29, cpe:/o:cisco:nx-os:10.2%281q%29, cpe:/o:cisco:nx-os:10.2%282%29, cpe:/o:cisco:nx-os:10.2%283%29, cpe:/o:cisco:nx-os:10.2%283t%29, cpe:/o:cisco:nx-os:10.2%284%29, cpe:/o:cisco:nx-os:9.2%281%29, cpe:/o:cisco:nx-os:9.2%282%29, cpe:/o:cisco:nx-os:9.2%282t%29, cpe:/o:cisco:nx-os:9.2%282v%29, cpe:/o:cisco:nx-os:9.2%283%29, cpe:/o:cisco:nx-os:9.2%284%29, cpe:/o:cisco:nx-os:9.3%281%29, cpe:/o:cisco:nx-os:9.3%2810%29, cpe:/o:cisco:nx-os:9.3%282%29, cpe:/o:cisco:nx-os:9.3%283%29, cpe:/o:cisco:nx-os:9.3%284%29, cpe:/o:cisco:nx-os:9.3%285%29, cpe:/o:cisco:nx-os:9.3%286%29, cpe:/o:cisco:nx-os:9.3%287%29, cpe:/o:cisco:nx-os:9.3%287a%29, cpe:/o:cisco:nx-os:9.3%288%29, cpe:/o:cisco:nx-os:9.3%289%29

Required KB Items: Tenable.ot/Cisco

Exploit Ease: No known exploits are available

Patch Publication Date: 8/23/2023

Vulnerability Publication Date: 8/23/2023

Reference Information

CVE: CVE-2023-20115