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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- http://www.securityfocus.com/bid/14605 ↗
- http://secunia.com/advisories/17103 ↗
- http://openvpn.net/changelog.html ↗
- http://www.mandriva.com/security/advisories?name=MDKSA-2005:145 ↗
- http://www.novell.com/linux/security/advisories/2005_20_sr.html ↗
- http://www.debian.org/security/2005/dsa-851 ↗
- http://secunia.com/advisories/16463 ↗