Cisco Nexus Series Switches Telnet CLI Command Injection (CVE-2017-6650)

high Tenable OT Security Plugin ID 501254

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability in the Telnet CLI command of Cisco NX-OS System Software 7.1 through 7.3 running on Cisco Nexus Series Switches could allow an authenticated, local attacker to perform a command injection attack. The vulnerability is due to insufficient input validation of command arguments. An attacker could exploit this vulnerability by injecting crafted command arguments into the Telnet CLI command. An exploit could allow the attacker to read or write arbitrary files at the user's privilege level outside of the user's path. Cisco Bug IDs:
CSCvb86771.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

Plugin Details

Severity: High

ID: 501254

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 7/25/2023

Updated: 7/26/2023

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2017-6650

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: cpe:/o:cisco:nx-os:7.2%280%29zz%2899.1%29, cpe:/o:cisco:nx-os:7.1%281%29n1%281%29, cpe:/o:cisco:nx-os:7.1%282%29n1%281%29, cpe:/o:cisco:nx-os:7.1%283%29n1%281%29, cpe:/o:cisco:nx-os:7.1%283%29n1%282%29, cpe:/o:cisco:nx-os:7.1%284%29n1%281%29, cpe:/o:cisco:nx-os:7.2%280%29n1%281%29, cpe:/o:cisco:nx-os:7.2%281%29n1%281%29, cpe:/o:cisco:nx-os:7.1%283%29n1%282.1%29, cpe:/o:cisco:nx-os:7.1%283%29n1%283.12%29, cpe:/o:cisco:nx-os:7.2%280%29d1%280.437%29, cpe:/o:cisco:nx-os:7.3%280%29n1%281%29

Required KB Items: Tenable.ot/Cisco

Exploit Ease: No known exploits are available

Patch Publication Date: 5/22/2017

Vulnerability Publication Date: 5/22/2017

Reference Information

CVE: CVE-2017-6650

CWE: 20, 77

Detections

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