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Ubuntu Security Notice USN-6850-1
June 26, 2024
openvpn vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
OpenVPN could allow unintended access to network services.
Software Description:
- openvpn: virtual private network software
Details:
It was discovered that OpenVPN incorrectly handled certain configurations
with multiple authentication plugins. A remote attacker could possibly use
this issue to bypass authentication using incomplete credentials.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS
   openvpn                         2.3.10-1ubuntu2.2+esm1
                                   Available with Ubuntu Pro
Ubuntu 14.04 LTS
   openvpn                         2.3.2-7ubuntu3.2+esm1
                                   Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
   https://ubuntu.com/security/notices/USN-6850-1
   CVE-2022-0547