Improper Authentication in Cisco Enterprise NFV Infrastructure Software

1) Improper Authentication

EUVDB-ID: #VU56260

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-34746

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests in the TACACS+ authentication, authorization and accounting (AAA) feature. A remote attacker can inject parameters into an authentication request, bypass authentication and log in as an administrator to the affected device.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Enterprise NFV Infrastructure Software: 4.5.1

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nfvis-g2DMVVh

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.