CVE-2011-0091

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Summary

CVECVE-2011-0091
StatePUBLISHED
Assignermicrosoft
Source PriorityCVE Program / NVD first with legacy fallback
Published2011-02-10 16:00:13 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionKerberos in Microsoft Windows Server 2008 R2 and Windows 7 does not prevent a session from changing from strong encryption to DES encryption, which allows man-in-the-middle attackers to spoof network traffic and obtain sensitive information via a DES downgrade, aka "Kerberos Spoofing Vulnerability."

Risk And Classification

Primary CVSS: v2.0 6.4 from [email protected]

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

Problem Types: CWE-287 | n/a

CVSS v2.0 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Microsoft Windows 7 - All All All
Operating System Microsoft Windows Server 2008 r2 All itanium All
Operating System Microsoft Windows Server 2008 r2 All x64 All

Vendor Declared Affected Products

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

References

ReferenceSourceLinkTags
Microsoft Windows Kerberos Authentication Encryption Downgrade Vulnerability - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com
osvdb.org/70835 af854a3a-2127-422b-91ae-364da2661108 osvdb.org
Repository / Oval Repository af854a3a-2127-422b-91ae-364da2661108 oval.cisecurity.org
IBM X-Force Exchange af854a3a-2127-422b-91ae-364da2661108 exchange.xforce.ibmcloud.com
Microsoft Security Bulletin MS11-013 - Important | Microsoft Docs af854a3a-2127-422b-91ae-364da2661108 docs.microsoft.com
ASA-2011-035 (2496930) af854a3a-2127-422b-91ae-364da2661108 support.avaya.com
Microsoft Windows Kerberos Encryption Standard Spoofing Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
Windows Kerberos Lets Local Users Gain Elevated Privileges - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
Webmail : Solution de messagerie professionnelle - OVHcloud- OVH af854a3a-2127-422b-91ae-364da2661108 www.vupen.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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