CVE-2011-0040

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Summary

CVECVE-2011-0040
StatePUBLISHED
Assignermicrosoft
Source PriorityCVE Program / NVD first with legacy fallback
Published2011-02-09 01:00:08 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionThe server in Microsoft Active Directory on Windows Server 2003 SP2 does not properly handle an update request for a service principal name (SPN), which allows remote attackers to cause a denial of service (authentication downgrade or outage) via a crafted request that triggers name collisions, aka "Active Directory SPN Validation Vulnerability."

Risk And Classification

Primary CVSS: v2.0 5 from [email protected]

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

Problem Types: CWE-20 | n/a

CVSS v2.0 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Microsoft Windows 2003 Server All sp2 All All
Operating System Microsoft Windows 2003 Server All sp2 itanium All
Operating System Microsoft Windows 2003 Server All sp2 x64 All

Vendor Declared Affected Products

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

References

ReferenceSourceLinkTags
Repository / Oval Repository af854a3a-2127-422b-91ae-364da2661108 oval.cisecurity.org
Microsoft Security Bulletin MS11-005 - Important | Microsoft Docs af854a3a-2127-422b-91ae-364da2661108 docs.microsoft.com
Webmail : Solution de messagerie professionnelle - OVHcloud- OVH af854a3a-2127-422b-91ae-364da2661108 www.vupen.com Vendor Advisory
Microsoft Active Directory SPN Collosions May Let Remote Authenticated Users Deny Service - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
Microsoft Active Directory Service Principal Names (CVE-2011-0040) Denial Of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
IBM X-Force Exchange af854a3a-2127-422b-91ae-364da2661108 exchange.xforce.ibmcloud.com
osvdb.org/70825 af854a3a-2127-422b-91ae-364da2661108 osvdb.org
Microsoft Windows Active Directory SPN Collision Denial of Service - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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