Cisco NX-OS Software CLI to Internal Service Bypass (cisco-sa-20190515-nxos-cli-bypass)

high Nessus Plugin ID 139666

Language:

Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco Unified Computing System (Managed) is affected by following vulnerability

- A vulnerability in the CLI of Cisco NX-OS Software could allow an authenticated, local attacker to access internal services that should be restricted on an affected device, such as the NX-API.The vulnerability is due to insufficient validation of arguments passed to a certain CLI command. An attacker could exploit this vulnerability by including malicious input as the argument to the affected command. A successful exploit could allow the attacker to bypass intended restrictions and access internal services of the device. An attacker would need valid device credentials to exploit this vulnerability. (CVE-2019-1726)

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

Solution

Upgrade to the relevant fixed version referenced in the appropriate Cisco bug ID:
- CSCvh24771
- CSCvi99247
- CSCvi99248
- CSCvi99250
- CSCvi99251
- CSCvi99252
- CSCvh24771
- CSCvn11851

Plugin Details

Severity: High

ID: 139666

File Name: cisco-sa-20190515-nxos-cli-bypass.nasl

Version: 1.10

Type: combined

Family: CISCO

Published: 8/18/2020

Updated: 6/14/2021

Supported Sensors: Nessus

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-2019-1726

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

Required KB Items: Host/Cisco/NX-OS/Version, Host/Cisco/NX-OS/Model, Host/Cisco/NX-OS/Device

Exploit Ease: No known exploits are available

Patch Publication Date: 5/15/2019

Vulnerability Publication Date: 5/15/2019

Reference Information

CVE: CVE-2019-1726

CISCO-SA: cisco-sa-20190515-nxos-cli-bypass

IAVA: 2019-A-0173

CISCO-BUG-ID: CSCvh24771, CSCvi99247, CSCvi99248, CSCvi99250, CSCvi99251, CSCvi99252, CSCvn11851

Detections

Analytics