CVE-2021-3824 : Exploit Details and Defense Strategies
Learn about CVE-2021-3824 affecting OpenVPN Access Server 2.9.0 through 2.9.4. Understand the impact, technical details, and mitigation steps for this security vulnerability.
OpenVPN Access Server versions 2.9.0 through 2.9.4 are affected by a vulnerability that allows remote attackers to inject arbitrary web script or HTML via the web login page URL.
Understanding CVE-2021-3824
This CVE record details a security issue in OpenVPN Access Server versions 2.9.0 through 2.9.4 that could be exploited by remote attackers.
What is CVE-2021-3824?
The CVE-2021-3824 vulnerability in OpenVPN Access Server allows attackers to inject arbitrary web script or HTML through the web login page URL, potentially compromising the security of the system.
The Impact of CVE-2021-3824
The impact of CVE-2021-3824 is significant as it exposes systems running affected versions of OpenVPN Access Server to potential web script injection attacks by remote threat actors.
Technical Details of CVE-2021-3824
This section provides specific technical details related to the CVE-2021-3824 vulnerability.
Vulnerability Description
The vulnerability in OpenVPN Access Server versions 2.9.0 through 2.9.4 arises from improper neutralization of encoded URI schemes in a web page, specifically on the web login page URL.
Affected Systems and Versions
OpenVPN Access Server versions 2.9.0 through 2.9.4 are confirmed to be affected by CVE-2021-3824. Users of these versions are urged to take immediate action.
Exploitation Mechanism
Remote attackers can exploit the CVE-2021-3824 vulnerability by injecting malicious web script or HTML code via the web login page URL, potentially leading to unauthorized access or further attacks.
Mitigation and Prevention
In response to CVE-2021-3824, there are recommended steps to mitigate the risks associated with this vulnerability.
Immediate Steps to Take
Users of OpenVPN Access Server versions 2.9.0 through 2.9.4 are advised to update to a patched version, if available, to prevent exploitation of the vulnerability.
Long-Term Security Practices
Implementing secure coding practices, regularly updating software, and monitoring web applications for suspicious activity are essential for long-term security.
Patching and Updates
OpenVPN has likely released patches addressing CVE-2021-3824. Users should promptly apply these patches to secure their systems from potential attacks.