CVE-2020-15074 Security feature bypass in OpenVPN Access Server

High 7.5 Published 14 Jul 2020 Updated 4 Aug 2024

Attackers can bypass token expiry restrictions by reconnecting, as the server generates new tokens instead of reusing existing ones.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-15074?

CVE-2020-15074 is a high-severity vulnerability in OpenVPN Access Server, published on 14 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-613, CWE-302

Which versions are affected by CVE-2020-15074?

It affects 1 product.

Products include Openvpn Openvpn Access Server.

How do I fix CVE-2020-15074?

No fix has been published for CVE-2020-15074 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-15074 being exploited?

There is no known exploitation of CVE-2020-15074 in the wild and no public exploit code.

Sources

Also known as GHSA-3wxw-5w97-2cvf.