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    CVE-2011-0091

    Kerberos 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."

    Published:Feb 10, 2011
    Last Modified:Apr 11, 2025
    EPS:Feb 10, 2011
    EPSS Score:0.0235
    CVSS Score:6.4

    Affected Products

    Vendor
    Microsoft
    Product
    Windows 7
    Vendor
    Microsoft
    Product
    Windows Server 2008

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-287 Improper Authentication

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    References

    http://osvdb.org/70835
    http://secunia.com/advisories/43257
    http://support.avaya.com/css/P8/documents/100127250
    http://www.securityfocus.com/bid/46140
    http://www.securitytracker.com/id?1025048
    http://www.vupen.com/english/advisories/2011/0326
    https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-013
    https://exchange.xforce.ibmcloud.com/vulnerabilities/64901
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12498
    http://osvdb.org/70835
    http://secunia.com/advisories/43257
    http://support.avaya.com/css/P8/documents/100127250
    http://www.securityfocus.com/bid/46140
    http://www.securitytracker.com/id?1025048
    http://www.vupen.com/english/advisories/2011/0326
    https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-013
    https://exchange.xforce.ibmcloud.com/vulnerabilities/64901
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12498

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High