Vulnerability Monitor

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CVE-2020-3393

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.

Published

2020-09-24T18:15:17.587

Last Modified

2024-12-19T13:52:35.190

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.0 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

3.9

Impact Score

10.0

Weaknesses

Type: Secondary
CWE-269
Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	cisco	ios_xe	16.12.1	Yes
Hardware	cisco	1100-4g_integrated_services_router	-	No
Hardware	cisco	1100-4gltegb_integrated_services_router	-	No
Hardware	cisco	1100-4gltena_integrated_services_router	-	No
Hardware	cisco	1100-4p_integrated_services_router	-	No
Hardware	cisco	1100-6g_integrated_services_router	-	No
Hardware	cisco	1100-8p_integrated_services_router	-	No
Hardware	cisco	1100-lte_integrated_services_router	-	No
Hardware	cisco	1100_integrated_services_router	-	No
Hardware	cisco	1101-4p_integrated_services_router	-	No
Hardware	cisco	1101_integrated_services_router	-	No
Hardware	cisco	1109-2p_integrated_services_router	-	No
Hardware	cisco	1109-4p_integrated_services_router	-	No
Hardware	cisco	1109_integrated_services_router	-	No
Hardware	cisco	1111x-8p_integrated_services_router	-	No
Hardware	cisco	1111x_integrated_services_router	-	No
Hardware	cisco	111x_integrated_services_router	-	No
Hardware	cisco	1120_integrated_services_router	-	No
Hardware	cisco	1160_integrated_services_router	-	No
Hardware	cisco	4221_integrated_services_router	-	No
Hardware	cisco	4331_integrated_services_router	-	No
Hardware	cisco	4431_integrated_services_router	-	No
Hardware	cisco	4451_integrated_services_router	-	No
Hardware	cisco	4461_integrated_services_router	-	No
Hardware	cisco	asr_1000-x	-	No
Hardware	cisco	asr_1001	-	No
Hardware	cisco	asr_1001-x	-	No
Hardware	cisco	asr_1002	-	No
Hardware	cisco	asr_1002-x	-	No
Hardware	cisco	asr_1004	-	No
Hardware	cisco	asr_1006	-	No
Hardware	cisco	asr_1013	-	No
Hardware	cisco	asr1001-hx	-	No
Hardware	cisco	asr1001-hx-rf	-	No
Hardware	cisco	asr1001-x-rf	-	No
Hardware	cisco	asr1001-x-ws	-	No
Hardware	cisco	asr1002-hx	-	No
Hardware	cisco	asr1002-hx-rf	-	No
Hardware	cisco	asr1002-hx-ws	-	No
Hardware	cisco	asr1002-x-rf	-	No
Hardware	cisco	asr1002-x-ws	-	No
Hardware	cisco	catalyst_9800-40	-	No
Hardware	cisco	catalyst_9800-80	-	No
Hardware	cisco	catalyst_9800-cl	-	No
Hardware	cisco	catalyst_9800-l	-	No
Hardware	cisco	catalyst_9800-l-c	-	No
Hardware	cisco	catalyst_9800-l-f	-	No
Hardware	cisco	catalyst_c9200-24p	-	No
Hardware	cisco	catalyst_c9200-24t	-	No
Hardware	cisco	catalyst_c9200-48p	-	No
Hardware	cisco	catalyst_c9200-48t	-	No
Hardware	cisco	catalyst_c9200l-24p-4g	-	No
Hardware	cisco	catalyst_c9200l-24p-4x	-	No
Hardware	cisco	catalyst_c9200l-24pxg-2y	-	No
Hardware	cisco	catalyst_c9200l-24pxg-4x	-	No
Hardware	cisco	catalyst_c9200l-24t-4g	-	No
Hardware	cisco	catalyst_c9200l-24t-4x	-	No
Hardware	cisco	catalyst_c9200l-48p-4g	-	No
Hardware	cisco	catalyst_c9200l-48p-4x	-	No
Hardware	cisco	catalyst_c9200l-48pxg-2y	-	No
Hardware	cisco	catalyst_c9200l-48pxg-4x	-	No
Hardware	cisco	catalyst_c9200l-48t-4g	-	No
Hardware	cisco	catalyst_c9200l-48t-4x	-	No
Hardware	cisco	catalyst_c9300-24p	-	No
Hardware	cisco	catalyst_c9300-24s	-	No
Hardware	cisco	catalyst_c9300-24t	-	No
Hardware	cisco	catalyst_c9300-24u	-	No
Hardware	cisco	catalyst_c9300-24ux	-	No
Hardware	cisco	catalyst_c9300-48p	-	No
Hardware	cisco	catalyst_c9300-48s	-	No
Hardware	cisco	catalyst_c9300-48t	-	No
Hardware	cisco	catalyst_c9300-48u	-	No
Hardware	cisco	catalyst_c9300-48un	-	No
Hardware	cisco	catalyst_c9300-48uxm	-	No
Hardware	cisco	catalyst_c9300l-24p-4g	-	No
Hardware	cisco	catalyst_c9300l-24p-4x	-	No
Hardware	cisco	catalyst_c9300l-24t-4g	-	No
Hardware	cisco	catalyst_c9300l-24t-4x	-	No
Hardware	cisco	catalyst_c9300l-48p-4g	-	No
Hardware	cisco	catalyst_c9300l-48p-4x	-	No
Hardware	cisco	catalyst_c9300l-48t-4g	-	No
Hardware	cisco	catalyst_c9300l-48t-4x	-	No
Hardware	cisco	catalyst_c9404r	-	No
Hardware	cisco	catalyst_c9407r	-	No
Hardware	cisco	catalyst_c9410r	-	No
Hardware	cisco	catalyst_c9500-12q	-	No
Hardware	cisco	catalyst_c9500-16x	-	No
Hardware	cisco	catalyst_c9500-24q	-	No
Hardware	cisco	catalyst_c9500-24y4c	-	No
Hardware	cisco	catalyst_c9500-32c	-	No
Hardware	cisco	catalyst_c9500-32qc	-	No
Hardware	cisco	catalyst_c9500-40x	-	No
Hardware	cisco	catalyst_c9500-48y4c	-	No
Hardware	cisco	csr_1000v	*	No
Hardware	cisco	ws-c3650-12x48uq	-	No
Hardware	cisco	ws-c3650-12x48ur	-	No
Hardware	cisco	ws-c3650-12x48uz	-	No
Hardware	cisco	ws-c3650-24pd	-	No
Hardware	cisco	ws-c3650-24pdm	-	No
Hardware	cisco	ws-c3650-24ps	-	No
Hardware	cisco	ws-c3650-24td	-	No
Hardware	cisco	ws-c3650-24ts	-	No
Hardware	cisco	ws-c3650-48fd	-	No
Hardware	cisco	ws-c3650-48fq	-	No
Hardware	cisco	ws-c3650-48fqm	-	No
Hardware	cisco	ws-c3650-48fs	-	No
Hardware	cisco	ws-c3650-48pd	-	No
Hardware	cisco	ws-c3650-48pq	-	No
Hardware	cisco	ws-c3650-48ps	-	No
Hardware	cisco	ws-c3650-48td	-	No
Hardware	cisco	ws-c3650-48tq	-	No
Hardware	cisco	ws-c3650-48ts	-	No
Hardware	cisco	ws-c3650-8x24uq	-	No
Hardware	cisco	ws-c3850	-	No
Hardware	cisco	ws-c3850-12s	-	No
Hardware	cisco	ws-c3850-12x48u	-	No
Hardware	cisco	ws-c3850-12xs	-	No
Hardware	cisco	ws-c3850-24p	-	No
Hardware	cisco	ws-c3850-24s	-	No
Hardware	cisco	ws-c3850-24t	-	No
Hardware	cisco	ws-c3850-24u	-	No
Hardware	cisco	ws-c3850-24xs	-	No
Hardware	cisco	ws-c3850-24xu	-	No
Hardware	cisco	ws-c3850-48f	-	No
Hardware	cisco	ws-c3850-48p	-	No
Hardware	cisco	ws-c3850-48t	-	No
Hardware	cisco	ws-c3850-48u	-	No
Hardware	cisco	ws-c3850-48xs	-	No

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-iox-app-host-mcZcnsBt Vendor Advisory ([email protected])
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-iox-app-host-mcZcnsBt Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)