Cisco IOS XE Software Denial of Service (cisco-sa-ewlc-dos-AnvKvMxR)

medium Nessus Plugin ID 137629

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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 Denial of Service vulnerability. The vulnerability exists because the affected software does not properly validate 802.11w disassociation and deauthentication PMFs that it receives. An unauthenticated, could exploit this vulnerability by sending a spoofed 802.11w PMF from a valid, authenticated client on a network adjacent to an affected device. A successful exploit could allow the attacker to terminate a single valid user connection to the 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 CSCvo76937

Plugin Details

Severity: Medium

ID: 137629

File Name: cisco-sa-ewlc-dos-AnvKvMxR.nasl

Version: 1.12

Type: combined

Family: CISCO

Published: 6/18/2020

Updated: 6/3/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.6

CVSS v2

Risk Factor: Low

Base Score: 3.3

Temporal Score: 2.4

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

CVSS Score Source: CVE-2020-3206

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.1

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

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: 6/3/2020

Vulnerability Publication Date: 6/3/2020

Reference Information

CVE: CVE-2020-3206

CWE: 20

CISCO-SA: cisco-sa-ewlc-dos-AnvKvMxR

IAVA: 2020-A-0239-S

CISCO-BUG-ID: CSCvo76937

Detections

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