CVE-2021-1338

Cisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service Vulnerabilities

Severity Score

7.2

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track*

*SSVC

Descriptions

Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers could allow an authenticated, remote attacker to execute arbitrary code or cause an affected device to restart unexpectedly. These vulnerabilities are due to improper validation of user-supplied input in the web-based management interface. An attacker could exploit these vulnerabilities by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system or cause the device to reload, resulting in a denial of service (DoS) condition. To exploit these vulnerabilities, an attacker would need to have valid administrator credentials on the affected device.

Múltiples vulnerabilidades en la interfaz de administración basada en web de los Enrutadores Cisco Small Business RV016, RV042, RV042G, RV082, RV320 y RV325, podrían permitir a un atacante autenticado remoto ejecutar código arbitrario o causar que un dispositivo afectado se reinicie inesperadamente. Estas vulnerabilidades son debido a una comprobación inapropiada de la entrada suministrada por el usuario en la interfaz de administración basada en web. Un atacante podría explotar estas vulnerabilidades mediante el envío de peticiones HTTP diseñadas hacia un dispositivo afectado. Una explotación con éxito podría permitir al atacante ejecutar código arbitrario como usuario root en el sistema operativo subyacente o causar que el dispositivo se recargue, resultando en una condición de denegación de servicio (DoS). Para explotar estas vulnerabilidades, un atacante necesitaría tener credenciales de administrador válidas en el dispositivo afectado

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Track*

Exploitation

None

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2020-11-13 CVE Reserved
2021-02-04 CVE Published
2024-11-08 CVE Updated
2024-11-24 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-121: Stack-based Buffer Overflow

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-rv-overflow-ghZP68yj	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"	Rv016 Multi-wan Vpn Router Firmware Search vendor "Cisco" for product "Rv016 Multi-wan Vpn Router Firmware"	<= 4.2.3.14 Search vendor "Cisco" for product "Rv016 Multi-wan Vpn Router Firmware" and version " <= 4.2.3.14"	-	Affected	in	Cisco Search vendor "Cisco"	Rv016 Multi-wan Vpn Router Search vendor "Cisco" for product "Rv016 Multi-wan Vpn Router"	-	-	Safe
Cisco Search vendor "Cisco"	Rv042 Dual Wan Vpn Router Firmware Search vendor "Cisco" for product "Rv042 Dual Wan Vpn Router Firmware"	<= 4.2.3.14 Search vendor "Cisco" for product "Rv042 Dual Wan Vpn Router Firmware" and version " <= 4.2.3.14"	-	Affected	in	Cisco Search vendor "Cisco"	Rv042 Dual Wan Vpn Router Search vendor "Cisco" for product "Rv042 Dual Wan Vpn Router"	-	-	Safe
Cisco Search vendor "Cisco"	Rv042g Dual Gigabit Wan Vpn Router Firmware Search vendor "Cisco" for product "Rv042g Dual Gigabit Wan Vpn Router Firmware"	<= 4.2.3.14 Search vendor "Cisco" for product "Rv042g Dual Gigabit Wan Vpn Router Firmware" and version " <= 4.2.3.14"	-	Affected	in	Cisco Search vendor "Cisco"	Rv042g Dual Gigabit Wan Vpn Router Search vendor "Cisco" for product "Rv042g Dual Gigabit Wan Vpn Router"	-	-	Safe
Cisco Search vendor "Cisco"	Rv082 Dual Wan Vpn Router Firmware Search vendor "Cisco" for product "Rv082 Dual Wan Vpn Router Firmware"	<= 4.2.3.14 Search vendor "Cisco" for product "Rv082 Dual Wan Vpn Router Firmware" and version " <= 4.2.3.14"	-	Affected	in	Cisco Search vendor "Cisco"	Rv082 Dual Wan Vpn Router Search vendor "Cisco" for product "Rv082 Dual Wan Vpn Router"	-	-	Safe
Cisco Search vendor "Cisco"	Rv320 Dual Gigabit Wan Vpn Router Firmware Search vendor "Cisco" for product "Rv320 Dual Gigabit Wan Vpn Router Firmware"	<= 1.5.1.11 Search vendor "Cisco" for product "Rv320 Dual Gigabit Wan Vpn Router Firmware" and version " <= 1.5.1.11"	-	Affected	in	Cisco Search vendor "Cisco"	Rv320 Dual Gigabit Wan Vpn Router Search vendor "Cisco" for product "Rv320 Dual Gigabit Wan Vpn Router"	-	-	Safe
Cisco Search vendor "Cisco"	Rv325 Dual Gigabit Wan Vpn Router Firmware Search vendor "Cisco" for product "Rv325 Dual Gigabit Wan Vpn Router Firmware"	<= 1.5.1.11 Search vendor "Cisco" for product "Rv325 Dual Gigabit Wan Vpn Router Firmware" and version " <= 1.5.1.11"	-	Affected	in	Cisco Search vendor "Cisco"	Rv325 Dual Gigabit Wan Vpn Router Search vendor "Cisco" for product "Rv325 Dual Gigabit Wan Vpn Router"	-	-	Safe