CVE-2005-2531 Information

Description

OpenVPN before 2.0.1 when running with \verb 0\ and without TLS authentication does not properly flush the OpenSSL error queue when a client fails certificate authentication to the server and causes the error to be processed by the wrong client which allows remote attackers to cause a denial of service (client disconnection) via a large number of failed authentication attempts.

Reference

http://openvpn.net/changelog.html http://secunia.com/advisories/16463 http://secunia.com/advisories/17103 http://www.debian.org/security/2005/dsa-851 http://www.mandriva.com/security/advisories?name=MDKSA-2005:145 http://www.novell.com/linux/security/advisories/2005_20_sr.html http://www.securityfocus.com/bid/14605