// For flags

CVE-2021-34746

Cisco Enterprise NFV Infrastructure Software Authentication Bypass Vulnerability

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

A vulnerability in the TACACS+ authentication, authorization and accounting (AAA) feature of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an unauthenticated, remote attacker to bypass authentication and log in to an affected device as an administrator. This vulnerability is due to incomplete validation of user-supplied input that is passed to an authentication script. An attacker could exploit this vulnerability by injecting parameters into an authentication request. A successful exploit could allow the attacker to bypass authentication and log in as an administrator to the affected device.

Una vulnerabilidad en la función de autenticación, autorización y contabilidad (AAA) de TACACS+ del software de infraestructura NFV de Cisco (NFVIS), podría permitir a un atacante remoto no autenticado omitir la autenticación e iniciar sesión en un dispositivo afectado como administrador. Esta vulnerabilidad es debido a una comprobación incompleta de la entrada suministrada por el usuario que se pasa a un script de autenticación. Un atacante podría explotar esta vulnerabilidad al inyectar parámetros en una petición de autenticación. Una explotación con éxito podría permitir al atacante omitir la autenticación e iniciar sesión como administrador en el dispositivo afectado

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2021-06-15 CVE Reserved
  • 2021-09-02 CVE Published
  • 2024-06-12 EPSS Updated
  • 2024-11-07 CVE Updated
  • 2024-11-07 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-287: Improper Authentication
  • CWE-289: Authentication Bypass by Alternate Name
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"
 Enterprise Nfv Infrastructure Software
Search vendor "Cisco" for product "Enterprise Nfv Infrastructure Software"
 < 4.6.1
Search vendor "Cisco" for product "Enterprise Nfv Infrastructure Software" and version " < 4.6.1"
-
Affected