// For flags

CVE-2022-20773

Cisco Umbrella Virtual Appliance Static SSH Host Key Vulnerability

Severity Score

8.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

A vulnerability in the key-based SSH authentication mechanism of Cisco Umbrella Virtual Appliance (VA) could allow an unauthenticated, remote attacker to impersonate a VA. This vulnerability is due to the presence of a static SSH host key. An attacker could exploit this vulnerability by performing a man-in-the-middle attack on an SSH connection to the Umbrella VA. A successful exploit could allow the attacker to learn the administrator credentials, change configurations, or reload the VA. Note: SSH is not enabled by default on the Umbrella VA.

Una vulnerabilidad en el mecanismo de autenticación SSH basado en claves de Cisco Umbrella Virtual Appliance (VA) podría permitir a un atacante remoto no autenticado hacerse pasar por un VA. Esta vulnerabilidad es debido a la presencia de una clave de host SSH estática. Un atacante podría aprovechar esta vulnerabilidad al llevar a cabo un ataque de tipo man-in-the-middle en una conexión SSH a la VA de Umbrella. Un ataque con éxito podría permitir al atacante conocer las credenciales del administrador, cambiar la configuración o recargar la VA. Nota: SSH no está habilitado por defecto en la VA de Umbrella

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
None
Automatable
No
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2021-11-02 CVE Reserved
  • 2022-04-21 CVE Published
  • 2024-07-12 EPSS Updated
  • 2024-11-06 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-321: Use of Hard-coded Cryptographic Key
  • CWE-798: Use of Hard-coded Credentials
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"
Umbrella
Search vendor "Cisco" for product "Umbrella"
< 3.3.2
Search vendor "Cisco" for product "Umbrella" and version " < 3.3.2"
-
Affected