CVE-2019-12643

Cisco REST API Container for IOS XE Software Authentication Bypass Vulnerability

Severity Score

10.0

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

A vulnerability in the Cisco REST API virtual service container for Cisco IOS XE Software could allow an unauthenticated, remote attacker to bypass authentication on the managed Cisco IOS XE device. The vulnerability is due to an improper check performed by the area of code that manages the REST API authentication service. An attacker could exploit this vulnerability by submitting malicious HTTP requests to the targeted device. A successful exploit could allow the attacker to obtain the token-id of an authenticated user. This token-id could be used to bypass authentication and execute privileged actions through the interface of the REST API virtual service container on the affected Cisco IOS XE device. The REST API interface is not enabled by default and must be installed and activated separately on IOS XE devices. See the Details section for more information.

Una vulnerabilidad en el contenedor de servicios virtuales API REST de Cisco para el software Cisco IOS XE podría permitir que un atacante remoto no identificado omita la autenticación en el dispositivo Cisco IOS XE administrado. La vulnerabilidad se debe a una verificación incorrecta realizada por el área de código que administra el servicio de autenticación API REST. Un atacante podría aprovechar esta vulnerabilidad al enviar solicitudes HTTP maliciosas al dispositivo objetivo. Una explotación con éxito podría permitir al atacante obtener el identificador de token de un usuario identificado. Este token-id podría usarse para omitir la autenticación y ejecutar acciones privilegiadas a través de la interfaz del contenedor del servicio virtual REST API en el dispositivo Cisco IOS XE afectado. La interfaz REST API no está habilitada de manera predeterminada y debe instalarse y activarse por separado en dispositivos IOS XE. Vea la sección Detalles para más informació

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2019-06-04 CVE Reserved
2019-08-28 CVE Published
2024-07-19 EPSS Updated
2024-11-19 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-287: Improper Authentication

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190828-iosxe-rest-auth-bypass	2019-10-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	15.5\(3\)s3.16 Search vendor "Cisco" for product "Ios Xe" and version "15.5\(3\)s3.16"	-	Affected	in	Cisco Search vendor "Cisco"	4221 Integrated Services Router Search vendor "Cisco" for product "4221 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	15.5\(3\)s3.16 Search vendor "Cisco" for product "Ios Xe" and version "15.5\(3\)s3.16"	-	Affected	in	Cisco Search vendor "Cisco"	4321 Integrated Services Router Search vendor "Cisco" for product "4321 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	15.5\(3\)s3.16 Search vendor "Cisco" for product "Ios Xe" and version "15.5\(3\)s3.16"	-	Affected	in	Cisco Search vendor "Cisco"	4331 Integrated Services Router Search vendor "Cisco" for product "4331 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	15.5\(3\)s3.16 Search vendor "Cisco" for product "Ios Xe" and version "15.5\(3\)s3.16"	-	Affected	in	Cisco Search vendor "Cisco"	4351 Integrated Services Router Search vendor "Cisco" for product "4351 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	15.5\(3\)s3.16 Search vendor "Cisco" for product "Ios Xe" and version "15.5\(3\)s3.16"	-	Affected	in	Cisco Search vendor "Cisco"	4431 Integrated Services Router Search vendor "Cisco" for product "4431 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	15.5\(3\)s3.16 Search vendor "Cisco" for product "Ios Xe" and version "15.5\(3\)s3.16"	-	Affected	in	Cisco Search vendor "Cisco"	4451-x Integrated Services Router Search vendor "Cisco" for product "4451-x Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	15.5\(3\)s3.16 Search vendor "Cisco" for product "Ios Xe" and version "15.5\(3\)s3.16"	-	Affected	in	Cisco Search vendor "Cisco"	Cloud Services Router 1000v Search vendor "Cisco" for product "Cloud Services Router 1000v"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.6.5 Search vendor "Cisco" for product "Ios Xe" and version "16.6.5"	-	Affected	in	Cisco Search vendor "Cisco"	4221 Integrated Services Router Search vendor "Cisco" for product "4221 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.6.5 Search vendor "Cisco" for product "Ios Xe" and version "16.6.5"	-	Affected	in	Cisco Search vendor "Cisco"	4321 Integrated Services Router Search vendor "Cisco" for product "4321 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.6.5 Search vendor "Cisco" for product "Ios Xe" and version "16.6.5"	-	Affected	in	Cisco Search vendor "Cisco"	4331 Integrated Services Router Search vendor "Cisco" for product "4331 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.6.5 Search vendor "Cisco" for product "Ios Xe" and version "16.6.5"	-	Affected	in	Cisco Search vendor "Cisco"	4351 Integrated Services Router Search vendor "Cisco" for product "4351 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.6.5 Search vendor "Cisco" for product "Ios Xe" and version "16.6.5"	-	Affected	in	Cisco Search vendor "Cisco"	4431 Integrated Services Router Search vendor "Cisco" for product "4431 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.6.5 Search vendor "Cisco" for product "Ios Xe" and version "16.6.5"	-	Affected	in	Cisco Search vendor "Cisco"	4451-x Integrated Services Router Search vendor "Cisco" for product "4451-x Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.6.5 Search vendor "Cisco" for product "Ios Xe" and version "16.6.5"	-	Affected	in	Cisco Search vendor "Cisco"	Cloud Services Router 1000v Search vendor "Cisco" for product "Cloud Services Router 1000v"	-	-	Safe