// For flags

CVE-2020-3434

Cisco AnyConnect Secure Mobility Client for Windows Denial of Service Vulnerability

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows 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 Windows system. The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted IPC message 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. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system.

Una vulnerabilidad en el canal de comunicación entre procesos (IPC) de Cisco AnyConnect Secure Mobility Client para Windows podría permitir a un atacante local autenticado causar una condición de denegación de servicio (DoS) sobre un dispositivo afectado. Para explotar esta vulnerabilidad, el atacante podría necesitar credenciales válidas en el sistema Windows. 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 un mensaje IPC diseñado al proceso AnyConnect sobre un dispositivo afectado. Una explotación con éxito podría permitir al atacante detener el proceso AnyConnect, causando una condición DoS en el dispositivo. Para explotar esta vulnerabilidad, el atacante debería tener credenciales válidas en el sistema Windows.

*Credits: N/A
CVSS Scores
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:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-12-12 CVE Reserved
  • 2020-08-17 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
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"
 Anyconnect Secure Mobility Client
Search vendor "Cisco" for product "Anyconnect Secure Mobility Client"
 <= 4.9.00086
Search vendor "Cisco" for product "Anyconnect Secure Mobility Client" and version " <= 4.9.00086"
windows
Affected