Cisco IOS XE Software Wireless Controller for the Catalyst 9000 Family DHCP Processing DoS (cisco-sa-wlc-dhcp-dos-76pCjPxK)

high Nessus Plugin ID 165591

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 (DoS) vulnerability.
A remote, unauthenticated attacker can send malicious DHCP packets to a device with DHCP TLV caching enabled, causing the device to reload.

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

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvz97985

See Also

http://www.nessus.org/u?fc7e9135

https://tools.cisco.com/security/center/viewErp.x?alertId=ERP-74745

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvz97985

Plugin Details

Severity: High

ID: 165591

File Name: cisco-sa-wlc-dhcp-dos-76pCjPxK-iosxe.nasl

Version: 1.7

Type: combined

Family: CISCO

Published: 9/30/2022

Updated: 12/2/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

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-2022-20847

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/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: 9/28/2022

Vulnerability Publication Date: 9/28/2022

Reference Information

CVE: CVE-2022-20847

CWE: 399

CISCO-SA: cisco-sa-wlc-dhcp-dos-76pCjPxK

CISCO-BUG-ID: CSCvz97985