cve-2020-17049
Vulnerability from cvelistv5
Published
2020-11-11 00:00
Modified
2024-11-15 16:12
Severity ?
6.6 (Medium) - 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
EPSS score ?
26.99% (0.95971)
Summary
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). 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. The update addresses this vulnerability by changing how the KDC validates service tickets used with KCD.
References
secure@microsoft.comhttp://www.openwall.com/lists/oss-security/2021/11/10/3Mailing List, Third Party Advisory
secure@microsoft.comhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17049Patch, Vendor Advisory
secure@microsoft.comhttps://security.gentoo.org/glsa/202309-06
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2021/11/10/3Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17049Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202309-06
Impacted products
Vendor Product Version
Microsoft Windows Server 2019 Version: 10.0.0   < 10.0.17763.2061
    cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2061:*:*:*:*:*:*:*
 Create a notification for this product.
   Microsoft Windows Server 2019 (Server Core installation) Version: 10.0.0   < 10.0.17763.2061
    cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2061:*:*:*:*:*:*:*
 Create a notification for this product.
   Microsoft Windows Server, version 1909 (Server Core installation) Version: 10.0.0   < publication
    cpe:2.3:o:microsoft:windows_server_1909:*:*:*:*:*:*:*:*
 Create a notification for this product.
   Microsoft Windows Server, version 1903 (Server Core installation) Version: 10.0.0   < publication
    cpe:2.3:o:microsoft:windows_server_1903:*:*:*:*:*:*:*:*
 Create a notification for this product.
   Microsoft Windows Server version 2004 Version: 10.0.0   < 10.0.19041.1110
    cpe:2.3:o:microsoft:windows_server_2004:10.0.19041.1110:*:*:*:*:*:*:*
 Create a notification for this product.
   Microsoft Windows Server 2016 Version: 10.0.0   < 10.0.14393.4530
    cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.4530:*:*:*:*:*:*:*
 Create a notification for this product.
   Microsoft Windows Server 2016 (Server Core installation) Version: 10.0.0   < 10.0.14393.4530
    cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.4530:*:*:*:*:*:*:*
 Create a notification for this product.
   Microsoft Windows Server 2008 Service Pack 2 Version: 6.0.0   < 6.0.6003.21167
    cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21167:*:*:*:*:*:x64:*
 Create a notification for this product.
   Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) Version: 6.0.0   < 6.0.6003.21167
    cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21167:*:*:*:*:*:x64:*
    cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21167:*:*:*:*:*:x86:*
 Create a notification for this product.
   Microsoft Windows Server 2008 Service Pack 2 Version: 6.0.0   < 6.0.6003.21167
    cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21167:*:*:*:*:*:x86:*
 Create a notification for this product.
   Microsoft Windows Server 2008 R2 Service Pack 1 Version: 6.1.0   < 6.1.7601.25661
    cpe:2.3:o:microsoft:windows_server_2008_R2:6.1.7601.25661:*:*:*:*:*:x64:*
 Create a notification for this product.
   Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) Version: 6.0.0   < 6.1.7601.25661
    cpe:2.3:o:microsoft:windows_server_2008_R2:6.1.7601.25661:*:*:*:*:*:x64:*
 Create a notification for this product.
   Microsoft Windows Server 2012 Version: 6.2.0   < 6.2.9200.23409
    cpe:2.3:o:microsoft:windows_server_2012:6.2.9200.23409:*:*:*:*:*:x64:*
 Create a notification for this product.
   Microsoft Windows Server 2012 (Server Core installation) Version: 6.2.0   < 6.2.9200.23409
    cpe:2.3:o:microsoft:windows_server_2012:6.2.9200.23409:*:*:*:*:*:x64:*
 Create a notification for this product.
   Microsoft Windows Server 2012 R2 Version: 6.3.0   < 6.3.9600.20069
    cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.20069:*:*:*:*:*:x64:*
 Create a notification for this product.
   Microsoft Windows Server 2012 R2 (Server Core installation) Version: 6.3.0   < 6.3.9600.20069
    cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.20069:*:*:*:*:*:x64:*
 Create a notification for this product.
   Microsoft Windows Server version 20H2 Version: 10.0.0   < 10.0.19041.1110
    cpe:2.3:o:microsoft:windows_server_20H2:10.0.19041.1110:*:*:*:*:*:*:*
 Create a notification for this product.
Show details on NVD website

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         published: "2020-11-11T07:15:16.543",
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         sourceIdentifier: "secure@microsoft.com",
         vulnStatus: "Modified",
         weaknesses: "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-863\"}]}]",
      },
      nvd: "{\"cve\":{\"id\":\"CVE-2020-17049\",\"sourceIdentifier\":\"secure@microsoft.com\",\"published\":\"2020-11-11T07:15:16.543\",\"lastModified\":\"2024-11-21T05:07:42.727\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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).\\nTo 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.\\nThe update addresses this vulnerability by changing how the KDC validates service tickets used with KCD.\"},{\"lang\":\"es\",\"value\":\"Vulnerabilidad de Omisión de la Característica de Seguridad de 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      vulnrichment: {
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         dataType: "CVE_RECORD",
         dataVersion: "5.1",
      },
   },
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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