Cisco NX-OS Software NX-API Denial of Service Vulnerability

medium Nessus Plugin ID 134219

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

A denial of service (DoS) vulnerability exists in the NX-API feature of Cisco NX-OS due to incorrect validation of the HTTP header of a request that is sent to the NX-API. An unauthenticated, remote attacker can exploit this issue, via a specially crafted HTTP request to NX-API, to cause the NX-API process to stop responding.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvp94847

Plugin Details

Severity: Medium

ID: 134219

File Name: cisco-sa-20200226-nxos-api-dos.nasl

Version: 1.6

Type: combined

Family: CISCO

Published: 3/5/2020

Updated: 4/19/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2020-3170

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

CPE: cpe:/o:cisco:nx-os

Exploit Ease: No known exploits are available

Patch Publication Date: 2/26/2020

Vulnerability Publication Date: 2/26/2020

Reference Information

CVE: CVE-2020-3170

CWE: 20

CISCO-SA: cisco-sa-20200226-nxos-api-dos

IAVA: 2020-A-0087

CISCO-BUG-ID: CSCvp94847

Detections

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