CVE-2005-2531 Common Vulnerabilities and Exposures

Upstream information

CVE-2005-2531 at MITRE

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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v2 Scores
CVSS detail	National Vulnerability Database
Base Score	5
Vector	AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector	Network
Access Complexity	Low
Authentication	None
Confidentiality Impact	None
Integrity Impact	None
Availability Impact	Partial

SUSE Bugzilla entry: 106258 [RESOLVED / FIXED]

SUSE Security Advisories:

SUSE-SR:2005:020, published Mon, 12 Sep 2005 13:00:00 +0000

SUSE Timeline for this CVE

CVE page created: Fri Jun 28 01:44:55 2013
CVE page last modified: Mon Oct 6 18:14:41 2025