Cisco IOS XE Software Web UI Unauthenticated Proxy Service (cisco-sa-webui-unauthprxy-KXXsbWh)

medium Nessus Plugin ID 139327

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 UI unauthenticated proxy service vulnerability. The vulnerability is due to the presence of a proxy service at a specific endpoint of the web UI.
An attacker could exploit this vulnerability by connecting to the proxy service. An exploit could allow the attacker to bypass access restrictions on the network by proxying their access request through the management network of the affected device. As the proxy is reached over the management virtual routing and forwarding (VRF), this could reduce the effectiveness of the bypass.

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 CSCvq90862

See Also

http://www.nessus.org/u?3014ccae

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq90862

Plugin Details

Severity: Medium

ID: 139327

File Name: cisco-sa-webui-unauthprxy-KXXsbWh-iosxe.nasl

Version: 1.8

Type: local

Family: CISCO

Published: 8/5/2020

Updated: 6/3/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Low

Base Score: 3.3

Temporal Score: 2.4

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

CVSS Score Source: CVE-2020-3222

CVSS v3

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.8

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/3/2020

Vulnerability Publication Date: 6/3/2020

Reference Information

CVE: CVE-2020-3222

CWE: 17

CISCO-SA: cisco-sa-webui-unauthprxy-KXXsbWh

IAVA: 2020-A-0239-S

CISCO-BUG-ID: CSCvq90862