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Cisco IOS XE Software for Catalyst 9800 Series DoS (cisco-sa-iosxe-wlc-fnfv9-EvrAQpNX)

high Nessus Plugin ID 141368

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco IOS XE Software is affected by a DoS vulnerability in the Flexible NetFlow Version 9 packet processor due to insufficient validation of certain parameters in a Flexible NetFlow Version 9 record. An unauthenticated, remote attacker could cause a DoS condition on an affected device. Please see the included Cisco BID and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvr55382

See Also

http://www.nessus.org/u?f624c003

http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-74268

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvr55382

Plugin Details

Severity: High

ID: 141368

File Name: cisco-sa-iosxe-wlc-fnfv9-EvrAQpNX-iosxe.nasl

Version: 1.11

Type: combined

Family: CISCO

Published: 10/12/2020

Updated: 5/3/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2020-3492

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: cpe:/o:cisco:ios_xe

Required KB Items: Host/Cisco/IOS-XE/Version, Host/Cisco/IOS-XE/Model

Exploit Ease: No known exploits are available

Patch Publication Date: 9/24/2020

Vulnerability Publication Date: 9/24/2020

Reference Information

CVE: CVE-2020-3492

CWE: 20

CISCO-SA: cisco-sa-iosxe-wlc-fnfv9-EvrAQpNX

IAVA: 2020-A-0439-S

CISCO-BUG-ID: CSCvr55382