high
7.8
CWE
20 269
Advisory Published
Updated

CVE-2020-3393: Cisco IOS XE Software IOx Application Hosting Privilege Escalation Vulnerability

First published: Thu Sep 24 2020(Updated: )

A vulnerability in the application-hosting subsystem of Cisco IOS XE Software could allow an authenticated, local attacker to elevate privileges to root on an affected device. The attacker could execute IOS XE commands outside the application-hosting subsystem Docker container as well as on the underlying Linux operating system. These commands could be run as the root user. The vulnerability is due to a combination of two factors: (a) incomplete input validation of the user payload of CLI commands, and (b) improper role-based access control (RBAC) when commands are issued at the command line within the application-hosting subsystem. An 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. The attacker would need valid user credentials to exploit this vulnerability.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco IOS XE=16.12.1
Cisco 1100-4g Integrated Services Router
Cisco 1100-4gltegb Integrated Services Router
Cisco 1100-4gltena Integrated Services Router
Cisco 1100-4p Integrated Services Router
Cisco 1100-6g Integrated Services Router
Cisco 1100-8p Integrated Services Router
Cisco 1100-lte Integrated Services Router
Cisco 1100 Integrated Services Router
Cisco 1101-4p Integrated Services Router
Cisco 1101 Integrated Services Router
Cisco 1109-2p Integrated Services Router
Cisco 1109-4p Integrated Services Router
Cisco 1109 Integrated Services Router
Cisco 1111x-8p Integrated Services Router
Cisco 1111x Integrated Services Router
Cisco 111x Integrated Services Router
Cisco 1120 Integrated Services Router
Cisco 1160 Integrated Services Router
Cisco 4221 Integrated Services Router
Cisco 4331 Integrated Services Router
Cisco 4431 Integrated Services Router
Cisco 4451 Integrated Services Router
Cisco 4461 Integrated Services Router
Cisco Asr 1000-x
Cisco Asr 1001
Cisco Asr 1001-x
Cisco Asr 1002
Cisco Asr 1002-x
Cisco Asr 1004
Cisco Asr 1006
Cisco Asr 1013
Cisco Asr1001-hx
Cisco Asr1001-hx-rf
Cisco Asr1001-x-rf
Cisco Asr1001-x-ws
Cisco Asr1002-hx
Cisco Asr1002-hx-rf
Cisco Asr1002-hx-ws
Cisco Asr1002-x-rf
Cisco Asr1002-x-ws
Cisco Catalyst 9800-40
Cisco Catalyst 9800-80
Cisco Catalyst 9800-cl
Cisco Catalyst 9800-l
Cisco Catalyst 9800-l-c
Cisco Catalyst 9800-l-f
Cisco Catalyst C9200-24p
Cisco Catalyst C9200-24t
Cisco Catalyst C9200-48p
Cisco Catalyst C9200-48t
Cisco Catalyst C9200l-24p-4g
Cisco Catalyst C9200l-24p-4x
Cisco Catalyst C9200l-24pxg-2y
Cisco Catalyst C9200l-24pxg-4x
Cisco Catalyst C9200l-24t-4g
Cisco Catalyst C9200l-24t-4x
Cisco Catalyst C9200l-48p-4g
Cisco Catalyst C9200l-48p-4x
Cisco Catalyst C9200l-48pxg-2y
Cisco Catalyst C9200l-48pxg-4x
Cisco Catalyst C9200l-48t-4g
Cisco Catalyst C9200l-48t-4x
Cisco Catalyst C9300-24p
Cisco Catalyst C9300-24s
Cisco Catalyst C9300-24t
Cisco Catalyst C9300-24u
Cisco Catalyst C9300-24ux
Cisco Catalyst C9300-48p
Cisco Catalyst C9300-48s
Cisco Catalyst C9300-48t
Cisco Catalyst C9300-48u
Cisco Catalyst C9300-48un
Cisco Catalyst C9300-48uxm
Cisco Catalyst C9300l-24p-4g
Cisco Catalyst C9300l-24p-4x
Cisco Catalyst C9300l-24t-4g
Cisco Catalyst C9300l-24t-4x
Cisco Catalyst C9300l-48p-4g
Cisco Catalyst C9300l-48p-4x
Cisco Catalyst C9300l-48t-4g
Cisco Catalyst C9300l-48t-4x
Cisco Catalyst C9404r
Cisco Catalyst C9407r
Cisco Catalyst C9410r
Cisco Catalyst C9500-12q
Cisco Catalyst C9500-16x
Cisco Catalyst C9500-24q
Cisco Catalyst C9500-24y4c
Cisco Catalyst C9500-32c
Cisco Catalyst C9500-32qc
Cisco Catalyst C9500-40x
Cisco Catalyst C9500-48y4c
Cisco Csr 1000v
Cisco Ws-c3650-12x48uq
Cisco Ws-c3650-12x48ur
Cisco Ws-c3650-12x48uz
Cisco Ws-c3650-24pd
Cisco Ws-c3650-24pdm
Cisco Ws-c3650-24ps
Cisco Ws-c3650-24td
Cisco Ws-c3650-24ts
Cisco Ws-c3650-48fd
Cisco Ws-c3650-48fq
Cisco Ws-c3650-48fqm
Cisco Ws-c3650-48fs
Cisco Ws-c3650-48pd
Cisco Ws-c3650-48pq
Cisco Ws-c3650-48ps
Cisco Ws-c3650-48td
Cisco Ws-c3650-48tq
Cisco Ws-c3650-48ts
Cisco Ws-c3650-8x24uq
Cisco Ws-c3850
Cisco Ws-c3850-12s
Cisco Ws-c3850-12x48u
Cisco Ws-c3850-12xs
Cisco Ws-c3850-24p
Cisco Ws-c3850-24s
Cisco Ws-c3850-24t
Cisco Ws-c3850-24u
Cisco Ws-c3850-24xs
Cisco Ws-c3850-24xu
Cisco Ws-c3850-48f
Cisco Ws-c3850-48p
Cisco Ws-c3850-48t
Cisco Ws-c3850-48u
Cisco Ws-c3850-48xs

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