OpenVPN Failed Authentication Denial Of Service Vulnerability

BID:14605

Info

OpenVPN Failed Authentication Denial Of Service Vulnerability

Bugtraq ID: 14605
Class: Design Error
CVE: CVE-2005-2531
Remote: Yes
Local: No
Published: Aug 19 2005 12:00AM
Updated: Jul 12 2009 05:06PM
Credit: The vendor has released this vulnerability.
Vulnerable: S.u.S.E. Linux Professional 9.2 x86_64
S.u.S.E. Linux Professional 9.2
S.u.S.E. Linux Professional 9.1 x86_64
S.u.S.E. Linux Professional 9.1
S.u.S.E. Linux Professional 9.0 x86_64
S.u.S.E. Linux Professional 9.0
S.u.S.E. Linux Personal 9.2 x86_64
S.u.S.E. Linux Personal 9.2
S.u.S.E. Linux Personal 9.1 x86_64
S.u.S.E. Linux Personal 9.1
S.u.S.E. Linux Personal 9.0 x86_64
S.u.S.E. Linux Personal 9.0
ProZIlla ProZilla Download Accelarator 1.4 .0
ProZIlla ProZilla Download Accelarator 1.3.2
ProZIlla ProZilla Download Accelarator 1.2.1
OpenVPN OpenVPN 2.0
+ Debian Linux 3.1 sparc
 + Debian Linux 3.1 s/390
 + Debian Linux 3.1 ppc
 + Debian Linux 3.1 mipsel
 + Debian Linux 3.1 mips
 + Debian Linux 3.1 m68k
 + Debian Linux 3.1 ia-64
 + Debian Linux 3.1 ia-32
 + Debian Linux 3.1 hppa
 + Debian Linux 3.1 arm
 + Debian Linux 3.1 amd64
 + Debian Linux 3.1 alpha
 + Debian Linux 3.1
OpenVPN OpenVPN 1.6 .0
OpenVPN OpenVPN 1.5 .0
OpenVPN OpenVPN 1.4.3
OpenVPN OpenVPN 1.4.2
OpenVPN OpenVPN 1.4.1
MandrakeSoft Multi Network Firewall 2.0
Not Vulnerable: OpenVPN OpenVPN 2.0.1

Discussion

OpenVPN Failed Authentication Denial Of Service Vulnerability

OpenVPN is prone to a denial of service vulnerability. This vulnerability results in a loss of client connectivity.

This can allow an authenticated attacker to deny service to legitimate users.

Exploit / POC

OpenVPN Failed Authentication Denial Of Service Vulnerability

No exploit is required.

Solution / Fix

OpenVPN Failed Authentication Denial Of Service Vulnerability

Solution:
The vendor has released version 2.0.1 to address this issue.

Mandriva has released advisory MDKSA-2005:145, along with fixes to address various issues in OpenVPN. Please see the referenced advisory for further information.

SUSE has released a security summary report (SUSE-SR:2005:020) addressing this and other issues. Please see the referenced advisory for further information.

Debian has released advisory DSA 851-1 to address this issue. Please see the referenced advisory for more information.


ProZIlla ProZilla Download Accelarator 1.2.1

ProZIlla ProZilla Download Accelarator 1.3.2

ProZIlla ProZilla Download Accelarator 1.4 .0

OpenVPN OpenVPN 1.4.1

OpenVPN OpenVPN 1.4.2

OpenVPN OpenVPN 1.4.3

OpenVPN OpenVPN 1.5 .0

OpenVPN OpenVPN 1.6 .0

OpenVPN OpenVPN 2.0

MandrakeSoft Multi Network Firewall 2.0

References

OpenVPN Failed Authentication Denial Of Service Vulnerability

References:

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report