PT-2021-3906 · Cisco · Cisco Enterprise Nfv Infrastructure

Cyrille Chatras · Published 2021-09-01 · Updated 2022-09-12 · CVE-2021-34746

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco Enterprise NFV Infrastructure Software (NFVIS) (affected versions not specified)

Description A vulnerability in the TACACS+ authentication feature could allow an unauthenticated, remote attacker to bypass authentication and log in to an affected device as an administrator. This issue is due to incomplete validation of user-supplied input passed to an authentication script. An attacker could exploit this by injecting parameters into an authentication request, potentially allowing them to bypass authentication and log in as an administrator.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Authentication

Weakness Enumeration

CWE-287

CWE-289

Related Identifiers

BDU:2021-04386

CVE-2021-34746

GHSA-GQX8-C4XR-C664

Affected Products

Cisco Enterprise Nfv Infrastructure

References · 8

• 🔥 https://github.com/orangecertcc/security-research/security/advisories/GHSA-gqx8-c4xr-c664 · Exploit
• https://bdu.fstec.ru/vul/2021-04386 · Security Note
• https://osv.dev/vulnerability/CVE-2021-34746 · Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nfvis-g2DMVVh · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-34746 · Security Note
• https://t.me/cibsecurity/28202 · Telegram Post
• https://t.me/cvenotify/36000 · Telegram Post
• https://t.me/true_secator/2067 · Telegram Post