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

Quick assessment

Affected
Cisco Cisco Enterprise NFV Infrastructure Software
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco Enterprise NFV Infrastructure Software（NFVIS）是美国思科（Cisco）公司的一套NVF基础架构软件平台。该平台可以通过中央协调器和控制器实现虚拟化服务的全生命周期管理。 Cisco Enterprise NFV Infrastructure Software 存在授权问题漏洞，该漏洞源于对传递给身份验证脚本的用户提供的输入的验证不完整。攻击者可以通过向身份验证请求中注入参数来绕过身份验证并以管理员身份登录受影响的设备。

CVSS 9.8 · Critical EPSS 17.66% · P97

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-34746

Vulnerability Information
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Vulnerability Title
Cisco Enterprise NFV Infrastructure Software Authentication Bypass Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用候选名称进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Enterprise NFV Infrastructure Software 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Enterprise NFV Infrastructure Software（NFVIS）是美国思科（Cisco）公司的一套NVF基础架构软件平台。该平台可以通过中央协调器和控制器实现虚拟化服务的全生命周期管理。 Cisco Enterprise NFV Infrastructure Software 存在授权问题漏洞，该漏洞源于对传递给身份验证脚本的用户提供的输入的验证不完整。攻击者可以通过向身份验证请求中注入参数来绕过身份验证并以管理员身份登录受影响的设备。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco Enterprise NFV Infrastructure Software n/a -

II. Public POCs for CVE-2021-34746

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III. Intelligence Information for CVE-2021-34746

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Vendor Advisories for CVE-2021-34746 (2)

Same Patch Batch · Cisco · 2021-09-02 · 5 CVEs total

CVE-2021-34732 6.1 MEDIUM Cisco Prime Collaboration Provisioning Cross-Site Scripting Vulnerability
CVE-2021-34733 5.5 MEDIUM Cisco Prime Infrastructure and Cisco Evolved Programmable Network Manager Information Disc
CVE-2021-34759 4.8 MEDIUM Cisco Identity Services Engine Cross-Site Scripting Vulnerability
CVE-2021-34765 4.3 MEDIUM Cisco Nexus Insights Authenticated Information Disclosure Vulnerability

IV. Related Vulnerabilities

Same product: Cisco Enterprise NFV Infrastructure Software
Same vendor: Cisco
Same weakness: CWE-289

V. Comments for CVE-2021-34746

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