CVE-2005-2534

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Summary

CVECVE-2005-2534
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2005-08-24 04:00:00 UTC
Updated2025-04-03 01:03:51 UTC
DescriptionRace condition in OpenVPN before 2.0.1, when --duplicate-cn is not enabled, allows remote attackers to cause a denial of service (server crash) via simultaneous TCP connections from multiple clients that use the same client certificate.

Risk And Classification

Primary CVSS: v2.0 2.6 from [email protected]

AV:N/AC:H/Au:N/C:N/I:N/A:P

Problem Types: NVD-CWE-Other | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
High
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

AV:N/AC:H/Au:N/C:N/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Openvpn Openvpn 2.0 All All All
Application Openvpn Openvpn 2.0.1_rc1 All All All
Application Openvpn Openvpn 2.0.1_rc2 All All All
Application Openvpn Openvpn 2.0.1_rc3 All All All
Application Openvpn Openvpn 2.0.1_rc4 All All All
Application Openvpn Openvpn 2.0.1_rc5 All All All
Application Openvpn Openvpn 2.0.1_rc6 All All All
Application Openvpn Openvpn 2.0.1_rc7 All All All
Application Openvpn Openvpn 2.0_beta1 All All All
Application Openvpn Openvpn 2.0_beta10 All All All
Application Openvpn Openvpn 2.0_beta11 All All All
Application Openvpn Openvpn 2.0_beta12 All All All
Application Openvpn Openvpn 2.0_beta13 All All All
Application Openvpn Openvpn 2.0_beta15 All All All
Application Openvpn Openvpn 2.0_beta16 All All All
Application Openvpn Openvpn 2.0_beta17 All All All
Application Openvpn Openvpn 2.0_beta18 All All All
Application Openvpn Openvpn 2.0_beta19 All All All
Application Openvpn Openvpn 2.0_beta2 All All All
Application Openvpn Openvpn 2.0_beta20 All All All
Application Openvpn Openvpn 2.0_beta28 All All All
Application Openvpn Openvpn 2.0_beta3 All All All
Application Openvpn Openvpn 2.0_beta4 All All All
Application Openvpn Openvpn 2.0_beta5 All All All
Application Openvpn Openvpn 2.0_beta6 All All All
Application Openvpn Openvpn 2.0_beta7 All All All
Application Openvpn Openvpn 2.0_beta8 All All All
Application Openvpn Openvpn 2.0_beta9 All All All
Application Openvpn Openvpn 2.0_rc1 All All All
Application Openvpn Openvpn 2.0_rc10 All All All
Application Openvpn Openvpn 2.0_rc11 All All All
Application Openvpn Openvpn 2.0_rc12 All All All
Application Openvpn Openvpn 2.0_rc13 All All All
Application Openvpn Openvpn 2.0_rc14 All All All
Application Openvpn Openvpn 2.0_rc15 All All All
Application Openvpn Openvpn 2.0_rc16 All All All
Application Openvpn Openvpn 2.0_rc17 All All All
Application Openvpn Openvpn 2.0_rc18 All All All
Application Openvpn Openvpn 2.0_rc19 All All All
Application Openvpn Openvpn 2.0_rc2 All All All
Application Openvpn Openvpn 2.0_rc20 All All All
Application Openvpn Openvpn 2.0_rc21 All All All
Application Openvpn Openvpn 2.0_rc3 All All All
Application Openvpn Openvpn 2.0_rc4 All All All
Application Openvpn Openvpn 2.0_rc5 All All All
Application Openvpn Openvpn 2.0_rc6 All All All
Application Openvpn Openvpn 2.0_rc7 All All All
Application Openvpn Openvpn 2.0_rc8 All All All
Application Openvpn Openvpn 2.0_rc9 All All All
Application Openvpn Openvpn 2.0_test1 All All All
Application Openvpn Openvpn 2.0_test10 All All All
Application Openvpn Openvpn 2.0_test11 All All All
Application Openvpn Openvpn 2.0_test12 All All All
Application Openvpn Openvpn 2.0_test14 All All All
Application Openvpn Openvpn 2.0_test15 All All All
Application Openvpn Openvpn 2.0_test16 All All All
Application Openvpn Openvpn 2.0_test17 All All All
Application Openvpn Openvpn 2.0_test18 All All All
Application Openvpn Openvpn 2.0_test19 All All All
Application Openvpn Openvpn 2.0_test2 All All All
Application Openvpn Openvpn 2.0_test20 All All All
Application Openvpn Openvpn 2.0_test21 All All All
Application Openvpn Openvpn 2.0_test22 All All All
Application Openvpn Openvpn 2.0_test23 All All All
Application Openvpn Openvpn 2.0_test24 All All All
Application Openvpn Openvpn 2.0_test26 All All All
Application Openvpn Openvpn 2.0_test27 All All All
Application Openvpn Openvpn 2.0_test29 All All All
Application Openvpn Openvpn 2.0_test3 All All All
Application Openvpn Openvpn 2.0_test5 All All All
Application Openvpn Openvpn 2.0_test6 All All All
Application Openvpn Openvpn 2.0_test7 All All All
Application Openvpn Openvpn 2.0_test8 All All All
Application Openvpn Openvpn 2.0_test9 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
OpenVPN Same Client Certificate Denial Of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
Secunia - Advisories - OpenVPN Multiple DoS Vulnerabilities af854a3a-2127-422b-91ae-364da2661108 secunia.com
Debian -- Security Information -- DSA-851-1 openvpn af854a3a-2127-422b-91ae-364da2661108 www.debian.org
Advisories - Mandriva af854a3a-2127-422b-91ae-364da2661108 www.mandriva.com Patch, Vendor Advisory
Secunia - Advisories - Debian update for openvpn af854a3a-2127-422b-91ae-364da2661108 secunia.com
OpenVPN 2.0.x Change Log af854a3a-2127-422b-91ae-364da2661108 openvpn.net
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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