Cisco Catalyst 9200 Series Switches Jumbo Frame DoS (cisco-sa-JP-DOS-g5FfGm8y)

high Nessus Plugin ID 148951

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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 due to insufficient packet size validation. An unauthenticated, remote attacker can exploit this, by sending jumbo frames or frames larger than the configured MTU size to the management interface of an affected device, to crash the 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 CSCvr37065

Plugin Details

Severity: High

ID: 148951

File Name: cisco-sa-JP-DOS-g5FfGm8y-iosxe.nasl

Version: 1.6

Type: combined

Family: CISCO

Published: 4/23/2021

Updated: 9/28/2023

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-2020-3527

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-2020-3527

CWE: 20

CISCO-SA: cisco-sa-JP-DOS-g5FfGm8y

IAVA: 2020-A-0439-S

CISCO-BUG-ID: CSCvr37065

Detections

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