CVE-2005-2531

Publication date 24 August 2005

Last updated 17 July 2025


Ubuntu priority

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.

Status

Package Ubuntu Release Status
openvpn 7.04 feisty
Fixed in 2.0.6-1
6.10 edgy
Fixed in 2.0.6-1
6.06 LTS dapper
Fixed in 2.0.6-1


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