// For flags

CVE-2022-20701

Cisco Small Business RV Series Routers Stack-based Buffer Overflow Vulnerability

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

Yes
*KEV

Decision

Act
*SSVC
Descriptions

Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code Elevate privileges Execute arbitrary commands Bypass authentication and authorization protections Fetch and run unsigned software Cause denial of service (DoS) For more information about these vulnerabilities, see the Details section of this advisory.

Múltiples vulnerabilidades en los routers Cisco Small Business RV160, RV260, RV340 y RV345 Series podrían permitir a un atacante realizar cualquiera de las siguientes acciones Ejecutar código arbitrario. Elevar los privilegios. Ejecutar comandos arbitrarios. Omitir las protecciones de autenticación y autorización. Obtener y ejecutar software no firmado. Causar una denegación de servicio (DoS) Para obtener más información sobre estas vulnerabilidades, consulte la sección Detalles de este aviso

This vulnerability allows local attackers to escalate privileges on affected installations of Cisco RV340 routers. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within confd_cli. The issue results from executing user commands at an unnecessarily high privilege level. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root.

A vulnerability in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code elevate privileges, execute arbitrary commands, bypass authentication and authorization protections, fetch and run unsigned software, or cause a denial of service (DoS).

*Credits: Benjamin Grap, Hanno Heinrichs and Lukas Kupczyk of CrowdStrike Intelligence
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Act
Exploitation
Active
Automatable
Yes
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2021-11-02 CVE Reserved
  • 2022-02-10 CVE Published
  • 2022-03-03 Exploited in Wild
  • 2022-03-17 KEV Due Date
  • 2024-08-14 EPSS Updated
  • 2024-10-29 CVE Updated
  • ---------- First Exploit
CWE
  • CWE-121: Stack-based Buffer Overflow
  • CWE-787: Out-of-bounds Write
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Cisco
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Rv340 Firmware
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<= 1.0.03.24
Search vendor "Cisco" for product "Rv340 Firmware" and version " <= 1.0.03.24"
-
Affected
in Cisco
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Rv340
Search vendor "Cisco" for product "Rv340"
--
Safe
Cisco
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Rv340w Firmware
Search vendor "Cisco" for product "Rv340w Firmware"
<= 1.0.03.24
Search vendor "Cisco" for product "Rv340w Firmware" and version " <= 1.0.03.24"
-
Affected
in Cisco
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Rv340w
Search vendor "Cisco" for product "Rv340w"
--
Safe
Cisco
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Rv345 Firmware
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<= 1.0.03.24
Search vendor "Cisco" for product "Rv345 Firmware" and version " <= 1.0.03.24"
-
Affected
in Cisco
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Rv345
Search vendor "Cisco" for product "Rv345"
--
Safe
Cisco
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Rv345p Firmware
Search vendor "Cisco" for product "Rv345p Firmware"
<= 1.0.03.24
Search vendor "Cisco" for product "Rv345p Firmware" and version " <= 1.0.03.24"
-
Affected
in Cisco
Search vendor "Cisco"
Rv345p
Search vendor "Cisco" for product "Rv345p"
--
Safe