CVE-2005-2534 Race condition in n/a

Low 2.6 Published 24 Aug 2005 Updated 7 Aug 2024

Remote attackers can crash the OpenVPN server via a race condition triggered by simultaneous connections using the same client certificate.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2005-2534?

CVE-2005-2534 is a low-severity vulnerability in n/a, published on 24 Aug 2005. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Race condition in OpenVPN before 2.0.1, when --duplicate-cn is not enabled, allows remote attackers to cause a denial of service (server crash) via simultaneous TCP connections from multiple clients that use the same client certificate.

Which versions are affected by CVE-2005-2534?

It affects 1 product.

Products include Openvpn Openvpn.

How do I fix CVE-2005-2534?

Upgrade to a fixed version.

Is CVE-2005-2534 being exploited?

There is no known exploitation of CVE-2005-2534 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2005-2534, GHSA-gj66-3prg-44gq.