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CVE-2021-27406— PerFact OpenVPN-Client

Quick assessment

Affected
PerFact OpenVPN-Client
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Openvpn OpenVPN是美国Openvpn公司的一个用于创建虚拟专用网络（VPN）加密通道的软件包，它使用OpenSSL库来加密数据与控制信息，并允许创建的VPN使用公开密钥、电子证书或者用户名/密码来进行身份验证。 OpenVPN 1.4.1.0 版本及之前版本存在安全漏洞，攻击者可利用该漏洞实现执行SYSTEM用户的特权。

CVSS 8.8 · High EPSS 1.00% · P60
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I. Basic Information for CVE-2021-27406

Vulnerability Information
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Vulnerability Title
PerFact OpenVPN-Client
Source: CVE Program / CVE List V5
Vulnerability Description
An attacker can take leverage on PerFact OpenVPN-Client versions 1.4.1.0 and prior to send the config command from any application running on the local host machine to force the back-end server into initializing a new open-VPN instance with arbitrary open-VPN configuration. This could result in the attacker achieving execution with privileges of a SYSTEM user.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
系统设置或配置在外部可控制
Source: CVE Program / CVE List V5
Vulnerability Title
OpenVPN 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Openvpn OpenVPN是美国Openvpn公司的一个用于创建虚拟专用网络（VPN）加密通道的软件包，它使用OpenSSL库来加密数据与控制信息，并允许创建的VPN使用公开密钥、电子证书或者用户名/密码来进行身份验证。 OpenVPN 1.4.1.0 版本及之前版本存在安全漏洞，攻击者可利用该漏洞实现执行SYSTEM用户的特权。
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
PerFact OpenVPN-Client unspecified ~ 1.4.1.0 -

II. Public POCs for CVE-2021-27406

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III. Intelligence Information for CVE-2021-27406

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Vendor Advisories for CVE-2021-27406 (1)

IV. Related Vulnerabilities

Same weakness: CWE-15

V. Comments for CVE-2021-27406

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