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CVE-2023-46849

Quick assessment

Affected
OpenVPN OpenVPN 2 (Community)
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 2.6.0版本至2.6.6版本存在安全漏洞，该漏洞源于存在除零行为，可能导致应用程序崩溃，从而导致拒绝服务。

AI Predicted 5.5 Difficulty: Easy EPSS 1.15% · P66

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-46849

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to 2.6.6 allows an attacker to trigger a divide by zero behaviour which could cause an application crash, leading to a denial of service.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
除零错误
Source: CVE Program / CVE List V5
Vulnerability Title
OpenVPN 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
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 2.6.0版本至2.6.6版本存在安全漏洞，该漏洞源于存在除零行为，可能导致应用程序崩溃，从而导致拒绝服务。
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 OpenVPN 2 (Community) 2.6.0 ~ 2.6.6 -
OpenVPN Access Server 2.11.0 ~ 2.11.3 -

II. Public POCs for CVE-2023-46849

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2023-46849

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Vendor Advisories for CVE-2023-46849 (1)

Mailing List Discussions for CVE-2023-46849 (2)

Other References for CVE-2023-46849 (2)

IV. Related Vulnerabilities

Same product: OpenVPN 2 (Community)
Same vendor: OpenVPN
Same weakness: CWE-369

V. Comments for CVE-2023-46849

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