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CVE-2020-15074

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 2.8.4之前版本中存在代码问题漏洞，该漏洞源于在进行重新连接时，程序生成了新的用户认证令牌，而不是重新使用现有的令牌。攻击者可利用该漏洞绕过初始的令牌失效时间戳。

AI Predicted 9.8 Difficulty: Easy EPSS 1.04% · P63

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-15074

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
OpenVPN Access Server older than version 2.8.4 and version 2.9.5 generates new user authentication tokens instead of reusing exiting tokens on reconnect making it possible to circumvent the initial token expiry timestamp.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用假设不可变数据进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
OpenVPN 代码问题漏洞
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 2.8.4之前版本中存在代码问题漏洞，该漏洞源于在进行重新连接时，程序生成了新的用户认证令牌，而不是重新使用现有的令牌。攻击者可利用该漏洞绕过初始的令牌失效时间戳。
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 2.8.3 and prior versions in addition to 2.9.5 -

II. Public POCs for CVE-2020-15074

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2020-15074

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Other References for CVE-2020-15074 (1)

Same Patch Batch · n/a · 2020-07-14 · 26 CVEs total

CVE-2020-15719 OpenLDAP libldap 信任管理问题漏洞
CVE-2019-12773 Verint Impact 跨站脚本漏洞
CVE-2019-12784 Verint Impact 跨站请求伪造漏洞
CVE-2019-12783 Verint Impact 输入验证错误漏洞
CVE-2020-11546 SuperWebMailer 注入漏洞
CVE-2020-9297 Netflix Titus 注入漏洞
CVE-2020-13846 Singularity 安全漏洞
CVE-2020-13845 Sylabs Singularity 安全漏洞
CVE-2020-13847 Sylabs Singularity 安全漏洞
CVE-2020-11827 GOG Galaxy 安全漏洞
CVE-2020-13935 Apache Tomcat 安全漏洞
CVE-2020-13934 Apache Tomcat 缓冲区错误漏洞
CVE-2020-15721 RosarioSIS 跨站脚本漏洞
CVE-2020-15711 MISP 跨站请求伪造漏洞
CVE-2020-15720 Dogtag PKI 信任管理问题漏洞
CVE-2020-1948 Apache Dubbo 代码问题漏洞
CVE-2020-13753 WebKitGTK和WPE WebKit 输入验证错误漏洞
CVE-2020-11956 Rittal PDU-3C002DEC和CMCIII-PU-9333E0FB 操作系统命令注入漏洞
CVE-2020-11955 Rittal PDU-3C002DEC和CMCIII-PU-9333E0FB 安全漏洞
CVE-2020-11953 Rittal PDU-3C002DEC和CMCIII-PU-9333E0FB 操作系统命令注入漏洞

Showing top 20 of 26 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: OpenVPN Access Server
Same vendor: n/a
Same weakness: CWE-302

V. Comments for CVE-2020-15074

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