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CVE-2021-3824

Quick assessment

Affected
n/a OpenVPN Access Server
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（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 Access Server 中存在跨站脚本漏洞，该漏洞源于产品的web登录界面未对用户输入数据的特殊字符做安全处理。攻击者可通过该漏洞执行恶意代码。以下产品及版本受到影响：OpenVPN Access Server 2.9.0 至 2.9.4版本。

AI Predicted 6.1 Difficulty: Easy EPSS 0.75% · P52
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I. Basic Information for CVE-2021-3824

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
OpenVPN Access Server 2.9.0 through 2.9.4 allow remote attackers to inject arbitrary web script or HTML via the web login page URL.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
Web页面编码URIScheme转义处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Openvpn OpenVPN 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Openvpn OpenVPN是美国OpenVPN（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 Access Server 中存在跨站脚本漏洞，该漏洞源于产品的web登录界面未对用户输入数据的特殊字符做安全处理。攻击者可通过该漏洞执行恶意代码。以下产品及版本受到影响：OpenVPN Access Server 2.9.0 至 2.9.4版本。
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
- OpenVPN Access Server 2.9.0 through 2.9.4 -

II. Public POCs for CVE-2021-3824

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III. Intelligence Information for CVE-2021-3824

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Other References for CVE-2021-3824 (1)

Same Patch Batch · n/a · 2021-09-23 · 33 CVEs total

CVE-2021-22018 VMware vCenter Server权限许可和访问控制问题漏洞
CVE-2020-19951 YzmCMS v5.5/controller/pay.class.php组件 跨站请求伪造漏洞
CVE-2020-19950 YzmCMS 跨站脚本漏洞
CVE-2020-19949 Yzmcms 跨站脚本漏洞
CVE-2020-24327 Discourse 代码问题漏洞
CVE-2021-26794 FrogCMS 代码问题漏洞
CVE-2021-21913 D-LINK DIR-3040 信任管理问题漏洞
CVE-2021-26750 Panda Security Antivirus代码问题漏洞
CVE-2021-22941 Citrix Systems Citrix ShareFile 安全漏洞
CVE-2021-22948 revive-adserver 安全特征问题漏洞
CVE-2021-22953 Concrete CMS 跨站请求伪造漏洞
CVE-2021-22952 UniFi Talk 代码注入漏洞
CVE-2021-22950 Concrete CMS 跨站请求伪造漏洞
CVE-2021-22949 Concrete CMS 跨站请求伪造漏洞
CVE-2021-22020 VMware vCenter Server 输入验证错误漏洞
CVE-2021-22019 VMware vCenter Server 输入验证错误漏洞
CVE-2021-22015 VMware vCenter Server 安全漏洞
CVE-2021-22017 Vmware VMware vCenter Server 授权问题漏洞
CVE-2021-22016 Vmware VMware vCenter Server 跨站脚本漏洞
CVE-2021-22014 VMware vCenter Server 代码注入漏洞

Showing top 20 of 33 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: OpenVPN Access Server
Same vendor: n/a
Same weakness: CWE-84

V. Comments for CVE-2021-3824

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