CVE-2021-1450

Cisco AnyConnect Secure Mobility Client Denial of Service Vulnerability

Severity Score

5.5

*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 interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client could allow an authenticated, local attacker to cause a denial of service (DoS) condition on an affected device. To exploit this vulnerability, the attacker would need to have valid credentials on the device. The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending one or more crafted IPC messages to the AnyConnect process on an affected device. A successful exploit could allow the attacker to stop the AnyConnect process, causing a DoS condition on the device. Note: The process under attack will automatically restart so no action is needed by the user or admin.

Una vulnerabilidad en el canal de comunicación entre procesos (IPC) de Cisco AnyConnect Secure Mobility Client podría permitir que un atacante local autenticado causar una condición de denegación de servicio (DoS) en un dispositivo afectado. Para explotar esta vulnerabilidad, el atacante debería tener credenciales válidas en el dispositivo. La vulnerabilidad es debido a una comprobación insuficiente de la entrada suministrada por el usuario. Un atacante podría explotar esta vulnerabilidad mediante el envío de uno o más mensajes IPC diseñados al proceso AnyConnect en un dispositivo afectado. Una explotación con éxito podría permitir al atacante detener el proceso de AnyConnect, causando una condición de DoS en el dispositivo. Nota: El proceso bajo ataque se reiniciará automáticamente, por lo que el usuario o el administrador no deben realizar ninguna acción

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

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
2021-02-24 CVE Published
2023-03-08 EPSS Updated
2024-11-08 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

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-anyconnect-dos-55AYyxYr	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"	Anyconnect Secure Mobility Client Search vendor "Cisco" for product "Anyconnect Secure Mobility Client"	4.9\(5086\) Search vendor "Cisco" for product "Anyconnect Secure Mobility Client" and version "4.9\(5086\)"	-	Affected	in	Apple Search vendor "Apple"	Macos Search vendor "Apple" for product "Macos"	-	-	Safe
Cisco Search vendor "Cisco"	Anyconnect Secure Mobility Client Search vendor "Cisco" for product "Anyconnect Secure Mobility Client"	4.9\(5086\) Search vendor "Cisco" for product "Anyconnect Secure Mobility Client" and version "4.9\(5086\)"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	-	-	Safe
Cisco Search vendor "Cisco"	Anyconnect Secure Mobility Client Search vendor "Cisco" for product "Anyconnect Secure Mobility Client"	4.9\(5086\) Search vendor "Cisco" for product "Anyconnect Secure Mobility Client" and version "4.9\(5086\)"	-	Affected	in	Microsoft Search vendor "Microsoft"	Windows Search vendor "Microsoft" for product "Windows"	-	-	Safe