Cisco IOS XE Software IOx Application Hosting Privilege Escalation (cisco-sa-iosxe-iox-app-host-mcZcnsBt)

High Nessus Plugin ID 142891

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VPR Score: 5.9

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 privilege escalation vulnerability in the application-hosting subsystem due to incomplete input validation of the user payload of CLI commands and improper role-based access control when commands are issued at the command line within the application-hosting subsystem. An authenticated, local attacker could exploit this vulnerability by using a CLI command with crafted user input. A successful exploit could allow the lower-privileged attacker to execute arbitrary CLI commands with root privileges.

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

Solution

Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCvr56862, CSCvr69240

See Also

http://www.nessus.org/u?110f3339

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvr56862

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvr69240

Plugin Details

Severity: High

ID: 142891

File Name: cisco-sa-iosxe-iox-app-host-mcZcnsBt-iosxe.nasl

Version: 1.7

Type: combined

Family: CISCO

Published: 2020/11/13

Updated: 2021/01/08

Dependencies: 67217

Risk Information

Risk Factor: High

VPR Score: 5.9

CVSS Score Source: CVE-2020-3393

CVSS v2.0

Base Score: 7.2

Temporal Score: 5.3

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 7.8

Temporal Score: 6.8

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2020/09/24

Vulnerability Publication Date: 2020/09/24

Reference Information

CVE: CVE-2020-3393

CISCO-BUG-ID: CSCvr56862, CSCvr69240

CISCO-SA: cisco-sa-iosxe-iox-app-host-mcZcnsBt

IAVA: 2020-A-0439

CWE: 269