// For flags

CVE-2022-20801

Cisco Small Business RV Series Routers Command Injection Vulnerabilities

Severity Score

7.2
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV340 and RV345 Routers could allow an authenticated, remote attacker to inject and execute arbitrary commands on the underlying operating system of an affected device. These vulnerabilities are due to insufficient validation of user-supplied input. An attacker could exploit these vulnerabilities by sending malicious input to an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying Linux operating system of the affected device. 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 la web de los routers Cisco Small Business RV340 y RV345 podrían permitir a un atacante remoto autenticado inyectar y ejecutar comandos arbitrarios en el sistema operativo subyacente de un dispositivo afectado. Estas vulnerabilidades son debido a que no se han comprobado suficientemente las entradas proporcionadas por el usuario. Un atacante podría explotar estas vulnerabilidades mediante el envío de entradas maliciosas a un dispositivo afectado. Una explotación con éxito podría permitir al atacante ejecutar comandos arbitrarios en el sistema operativo Linux subyacente del dispositivo afectado. Para explotar estas vulnerabilidades, un atacante necesitaría tener credenciales de administrador válidas en el dispositivo afectado

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Cisco RV340 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.
The specific flaw exists within the handling of set-snmp JSON RPC requests. When parsing the usmUserAuthKey parameter, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the www-data user.

*Credits: Anonymous
CVSS Scores
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
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2021-11-02 CVE Reserved
  • 2022-05-04 CVE Published
  • 2024-11-06 CVE Updated
  • 2024-11-12 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
  • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Cisco
Search vendor "Cisco"
 Rv340 Firmware
Search vendor "Cisco" for product "Rv340 Firmware"
 < 1.0.03.27
Search vendor "Cisco" for product "Rv340 Firmware" and version " < 1.0.03.27"
-
Affected
in Cisco
Search vendor "Cisco"
 Rv340
Search vendor "Cisco" for product "Rv340"
--
Safe
Cisco
Search vendor "Cisco"
 Rv340w Firmware
Search vendor "Cisco" for product "Rv340w Firmware"
 < 1.0.03.27
Search vendor "Cisco" for product "Rv340w Firmware" and version " < 1.0.03.27"
-
Affected
in Cisco
Search vendor "Cisco"
 Rv340w
Search vendor "Cisco" for product "Rv340w"
--
Safe
Cisco
Search vendor "Cisco"
 Rv345 Firmware
Search vendor "Cisco" for product "Rv345 Firmware"
 < 1.0.03.27
Search vendor "Cisco" for product "Rv345 Firmware" and version " < 1.0.03.27"
-
Affected
in Cisco
Search vendor "Cisco"
 Rv345
Search vendor "Cisco" for product "Rv345"
--
Safe
Cisco
Search vendor "Cisco"
 Rv345p Firmware
Search vendor "Cisco" for product "Rv345p Firmware"
 < 1.0.03.27
Search vendor "Cisco" for product "Rv345p Firmware" and version " < 1.0.03.27"
-
Affected
in Cisco
Search vendor "Cisco"
 Rv345p
Search vendor "Cisco" for product "Rv345p"
--
Safe