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{
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"data_version" : "4.0" ,
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"data_type" : "CVE" ,
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"ASSIGNER" : "secure@microsoft.com" ,
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"STATE" : "PUBLIC"
} ,
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"value" : "<p>A security feature bypass vulnerability exists in the way Key Distribution Center (KDC) determines if a service ticket can be used for delegation via Kerberos Constrained Delegation (KCD).</p>\n<p>To exploit the vulnerability, a compromised service that is configured to use KCD could tamper with a service ticket that is not valid for delegation to force the KDC to accept it.</p>\n<p>The update addresses this vulnerability by changing how the KDC validates service tickets used with KCD.</p>\n"
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"vendor_name" : "Microsoft" ,
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"version_affected" : "<" ,
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{
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{
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{
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"version_affected" : "<" ,
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{
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"version_affected" : "<" ,
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{
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{
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"product_name" : "Windows Server 2012 R2" ,
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"version_affected" : "<" ,
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"product_name" : "Windows Server 2012 R2 (Server Core installation)" ,
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{
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"product_name" : "Windows Server version 20H2" ,
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"version_affected" : "<" ,
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}
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}
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]
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} ,
"references" : {
"reference_data" : [
{
"url" : "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17049" ,
"refsource" : "MISC" ,
"name" : "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17049"
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} ,
{
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"url" : "http://www.openwall.com/lists/oss-security/2021/11/10/3" ,
"refsource" : "MISC" ,
"name" : "http://www.openwall.com/lists/oss-security/2021/11/10/3"
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} ,
{
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"url" : "https://security.gentoo.org/glsa/202309-06" ,
"refsource" : "MISC" ,
"name" : "https://security.gentoo.org/glsa/202309-06"
}
]
} ,
"impact" : {
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{
"version" : "3.1" ,
"baseSeverity" : "MEDIUM" ,
"baseScore" : 6.6 ,
"vectorString" : "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C"
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}
]
}
}