CVE-2021-1555

Cisco Small Business 100, 300, and 500 Series Wireless Access Points Command Injection 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 certain Cisco Small Business 100, 300, and 500 Series Wireless Access Points could allow an authenticated, remote attacker to perform command injection attacks against an affected device. These vulnerabilities are due to improper validation of user-supplied input. An attacker could exploit these vulnerabilities by sending crafted HTTP requests to the web-based management interface of an affected system. A successful exploit could allow the attacker to execute arbitrary commands with root privileges on the device. To exploit these vulnerabilities, the attacker must have valid administrative credentials for the device.

Múltiples vulnerabilidades en la interfaz de administración basada en web de determinados Cisco Small Business 100, 300, y 500 Series Wireless Access Points,, podrían permitir a un atacante remoto autenticado llevar a cabo ataques de inyección de comandos contra un dispositivo afectado. Estas vulnerabilidades son debido a una comprobación inapropiada de la entrada suministrada por el usuario. Un atacante podría explotar estas vulnerabilidades mediante el envío de peticiones HTTP diseñadas hacia la interfaz de administración basada en web de un sistema afectado. Una explotación con éxito podría permitir al atacante ejecutar comandos arbitrarios con privilegios root en el dispositivo. Para explotar estas vulnerabilidades, el atacante debe tener credenciales administrativas válidas para el dispositivo

*Credits: N/A

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

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2020-11-13 CVE Reserved
2021-05-22 CVE Published
2023-03-07 EPSS Updated
2024-11-08 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')

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-wap-inject-Mp9FSdG	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"	Wap125 Firmware Search vendor "Cisco" for product "Wap125 Firmware"	<= 1.0.3.1 Search vendor "Cisco" for product "Wap125 Firmware" and version " <= 1.0.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	Wap125 Search vendor "Cisco" for product "Wap125"	-	-	Safe
Cisco Search vendor "Cisco"	Wap131 Firmware Search vendor "Cisco" for product "Wap131 Firmware"	<= 1.0.2.17 Search vendor "Cisco" for product "Wap131 Firmware" and version " <= 1.0.2.17"	-	Affected	in	Cisco Search vendor "Cisco"	Wap131 Search vendor "Cisco" for product "Wap131"	-	-	Safe
Cisco Search vendor "Cisco"	Wap150 Firmware Search vendor "Cisco" for product "Wap150 Firmware"	<= 1.1.2.4 Search vendor "Cisco" for product "Wap150 Firmware" and version " <= 1.1.2.4"	-	Affected	in	Cisco Search vendor "Cisco"	Wap150 Search vendor "Cisco" for product "Wap150"	-	-	Safe
Cisco Search vendor "Cisco"	Wap351 Firmware Search vendor "Cisco" for product "Wap351 Firmware"	<= 1.0.2.17 Search vendor "Cisco" for product "Wap351 Firmware" and version " <= 1.0.2.17"	-	Affected	in	Cisco Search vendor "Cisco"	Wap351 Search vendor "Cisco" for product "Wap351"	-	-	Safe
Cisco Search vendor "Cisco"	Wap361 Firmware Search vendor "Cisco" for product "Wap361 Firmware"	<= 1.1.2.4 Search vendor "Cisco" for product "Wap361 Firmware" and version " <= 1.1.2.4"	-	Affected	in	Cisco Search vendor "Cisco"	Wap361 Search vendor "Cisco" for product "Wap361"	-	-	Safe
Cisco Search vendor "Cisco"	Wap581 Firmware Search vendor "Cisco" for product "Wap581 Firmware"	<= 1.0.3.1 Search vendor "Cisco" for product "Wap581 Firmware" and version " <= 1.0.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	Wap581 Search vendor "Cisco" for product "Wap581"	-	-	Safe