Executive Summary

Name CVE-2005-2531 First vendor Publication 2005-08-24
Vendor Cve Last vendor Modification 2008-09-05

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2531

CPE : Common Platform Enumeration

Application 74

OpenVAS Exploits

Date Description
2008-09-04 Name : FreeBSD Ports: openvpn
File : nvt/freebsd_openvpn2.nasl
2008-01-17 Name : Debian Security Advisory DSA 851-1 (openvpn)
File : nvt/deb_851_1.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
18882 OpenVPN OpenSSL Error Queue Arbitrary Disconnect DoS

Nessus® Vulnerability Scanner

Date Description
2006-05-13 Name : The remote FreeBSD host is missing a security-related update.
File : freebsd_pkg_a51ad838207748b2a136e888a7db5f8d.nasl - Type : ACT_GATHER_INFO
2005-10-11 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-851.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

Source Url
BID http://www.securityfocus.com/bid/14605
CONFIRM http://openvpn.net/changelog.html
DEBIAN http://www.debian.org/security/2005/dsa-851
MANDRIVA http://www.mandriva.com/security/advisories?name=MDKSA-2005:145
SECUNIA http://secunia.com/advisories/16463
SUSE http://www.novell.com/linux/security/advisories/2005_20_sr.html

Alert History

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Date Informations
2021-05-04 12:03:06
  • Multiple Updates
2021-04-22 01:03:22
  • Multiple Updates
2020-05-23 00:16:44
  • Multiple Updates
2016-04-26 13:43:26
  • Multiple Updates
2014-02-17 10:32:24
  • Multiple Updates
2013-05-11 11:30:11
  • Multiple Updates