CVE-2021-34746 Cisco Enterprise NFV Infrastructure Software Authentication Bypass Vulnerability

2021-09-0203:05:45

CWE-289

cisco

www.cve.org

cve-2021-34746

cisco enterprise nfv infrastructure software

authentication bypass

tacacs+

remote attacker

administrator

validation

user-supplied input

exploit

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.9

Confidence

High

EPSS

0.009

Percentile

82.6%

JSON

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.

CNA Affected

[
  {
    "product": "Cisco Enterprise NFV Infrastructure Software",
    "vendor": "Cisco",
    "versions": [
      {
        "status": "affected",
        "version": "n/a"
      }
    ]
  }
]