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Severity
Medium
Analysis Summary
CVE-2021-3824
OpenVPN Access Server is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the web login page URL. A remote attacker could exploit this vulnerability using a specially-crafted URL to execute script in a victim’s Web browser within the security context of the hosting Web site, once the URL is clicked. An attacker could use this vulnerability to steal the victim’s cookie-based authentication credentials.
Impact
- Cross-Site Scripting
Affected Vendors
- OpenVPN
Affected Products
- OpenVPN Access Server 2.9.0
- OpenVPN Access Server 2.9.1
- OpenVPN Access Server 2.9.2
- OpenVPN Access Server 2.9.3
- OpenVPN Access Server 2.9.4
Remediation
Upgrade to the latest version of OpenVPN Access Server, available from the OpenVPN Web site.