CVE-2022-20923

Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers IPSec VPN Server Authentication Bypass Vulnerability

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

A vulnerability in the IPSec VPN Server authentication functionality of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an unauthenticated, remote attacker to bypass authentication controls and access the IPSec VPN network. This vulnerability is due to the improper implementation of the password validation algorithm. An attacker could exploit this vulnerability by logging in to the VPN from an affected device with crafted credentials. A successful exploit could allow the attacker to bypass authentication and access the IPSec VPN network. The attacker may obtain privileges that are the same level as an administrative user, depending on the crafted credentials that are used. Cisco has not released software updates that address this vulnerability.

Una vulnerabilidad en la funcionalidad de autenticación del Servidor VPN IPSec de los enrutadores RV110W, RV130, RV130W y RV215W de Cisco Small Business podría permitir a un atacante remoto no autenticado omitir los controles de autenticación y acceder a la red VPN IPSec. Esta vulnerabilidad es debido a una implementación inapropiada del algoritmo de comprobación de contraseñas. Un atacante podría explotar esta vulnerabilidad al iniciar sesión en la VPN desde un dispositivo afectado con credenciales manipuladas. Una explotación con éxito podría permitir al atacante omitir la autenticación y acceder a la red VPN IPSec. El atacante puede obtener privilegios del mismo nivel que un usuario administrativo, según las credenciales manipuladas que se utilicen. Cisco no ha publicado actualizaciones de software que aborden esta vulnerabilidad

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

Low

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2021-11-02 CVE Reserved
2022-09-08 CVE Published
2024-08-22 EPSS Updated
2024-11-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-287: Improper Authentication
CWE-303: Incorrect Implementation of Authentication Algorithm

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-sb-rv-vpnbypass-Cpheup9O	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"	Rv110w Firmware Search vendor "Cisco" for product "Rv110w Firmware"	1.0.3.55 Search vendor "Cisco" for product "Rv110w Firmware" and version "1.0.3.55"	-	Affected	in	Cisco Search vendor "Cisco"	Rv110w Search vendor "Cisco" for product "Rv110w"	-	-	Safe
Cisco Search vendor "Cisco"	Rv110w Firmware Search vendor "Cisco" for product "Rv110w Firmware"	1.2.2.8 Search vendor "Cisco" for product "Rv110w Firmware" and version "1.2.2.8"	-	Affected	in	Cisco Search vendor "Cisco"	Rv110w Search vendor "Cisco" for product "Rv110w"	-	-	Safe
Cisco Search vendor "Cisco"	Rv110w Firmware Search vendor "Cisco" for product "Rv110w Firmware"	1.3.1.7 Search vendor "Cisco" for product "Rv110w Firmware" and version "1.3.1.7"	-	Affected	in	Cisco Search vendor "Cisco"	Rv110w Search vendor "Cisco" for product "Rv110w"	-	-	Safe
Cisco Search vendor "Cisco"	Rv130 Firmware Search vendor "Cisco" for product "Rv130 Firmware"	1.0.3.55 Search vendor "Cisco" for product "Rv130 Firmware" and version "1.0.3.55"	-	Affected	in	Cisco Search vendor "Cisco"	Rv130 Search vendor "Cisco" for product "Rv130"	-	-	Safe
Cisco Search vendor "Cisco"	Rv130 Firmware Search vendor "Cisco" for product "Rv130 Firmware"	1.2.2.8 Search vendor "Cisco" for product "Rv130 Firmware" and version "1.2.2.8"	-	Affected	in	Cisco Search vendor "Cisco"	Rv130 Search vendor "Cisco" for product "Rv130"	-	-	Safe
Cisco Search vendor "Cisco"	Rv130 Firmware Search vendor "Cisco" for product "Rv130 Firmware"	1.3.1.7 Search vendor "Cisco" for product "Rv130 Firmware" and version "1.3.1.7"	-	Affected	in	Cisco Search vendor "Cisco"	Rv130 Search vendor "Cisco" for product "Rv130"	-	-	Safe
Cisco Search vendor "Cisco"	Rv130w Firmware Search vendor "Cisco" for product "Rv130w Firmware"	1.0.3.55 Search vendor "Cisco" for product "Rv130w Firmware" and version "1.0.3.55"	-	Affected	in	Cisco Search vendor "Cisco"	Rv130w Search vendor "Cisco" for product "Rv130w"	-	-	Safe
Cisco Search vendor "Cisco"	Rv130w Firmware Search vendor "Cisco" for product "Rv130w Firmware"	1.2.2.8 Search vendor "Cisco" for product "Rv130w Firmware" and version "1.2.2.8"	-	Affected	in	Cisco Search vendor "Cisco"	Rv130w Search vendor "Cisco" for product "Rv130w"	-	-	Safe
Cisco Search vendor "Cisco"	Rv130w Firmware Search vendor "Cisco" for product "Rv130w Firmware"	1.3.1.7 Search vendor "Cisco" for product "Rv130w Firmware" and version "1.3.1.7"	-	Affected	in	Cisco Search vendor "Cisco"	Rv130w Search vendor "Cisco" for product "Rv130w"	-	-	Safe
Cisco Search vendor "Cisco"	Rv215w Firmware Search vendor "Cisco" for product "Rv215w Firmware"	1.0.3.55 Search vendor "Cisco" for product "Rv215w Firmware" and version "1.0.3.55"	-	Affected	in	Cisco Search vendor "Cisco"	Rv215w Search vendor "Cisco" for product "Rv215w"	-	-	Safe
Cisco Search vendor "Cisco"	Rv215w Firmware Search vendor "Cisco" for product "Rv215w Firmware"	1.2.2.8 Search vendor "Cisco" for product "Rv215w Firmware" and version "1.2.2.8"	-	Affected	in	Cisco Search vendor "Cisco"	Rv215w Search vendor "Cisco" for product "Rv215w"	-	-	Safe
Cisco Search vendor "Cisco"	Rv215w Firmware Search vendor "Cisco" for product "Rv215w Firmware"	1.3.1.7 Search vendor "Cisco" for product "Rv215w Firmware" and version "1.3.1.7"	-	Affected	in	Cisco Search vendor "Cisco"	Rv215w Search vendor "Cisco" for product "Rv215w"	-	-	Safe