6.6 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
7.7 High
AI Score
Confidence
High
9 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:S/C:C/I:C/A:C
0.027 Low
EPSS
Percentile
90.4%
<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>
<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>
<p>The update addresses this vulnerability by changing how the KDC validates service tickets used with KCD.</p>
Vendor | Product | Version | CPE |
---|---|---|---|
microsoft | windows_server_2019 | * | cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* |
microsoft | windows_server_2019 | * | cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* |
microsoft | windows_server,_version_1909 | 10.0.0 | cpe:2.3:o:microsoft:windows_server,_version_1909:10.0.0:*:*:*:*:*:*:* |
microsoft | windows_server,_version_1903 | 10.0.0 | cpe:2.3:o:microsoft:windows_server,_version_1903:10.0.0:*:*:*:*:*:*:* |
microsoft | windows_server_version_2004 | * | cpe:2.3:o:microsoft:windows_server_version_2004:*:*:*:*:*:*:*:* |
microsoft | windows_server_2016 | * | cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* |
microsoft | windows_server_2016 | * | cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* |
microsoft | windows_server_2008_sp2 | * | cpe:2.3:o:microsoft:windows_server_2008_sp2:*:sp2:*:*:*:*:*:* |
microsoft | windows_server_2008_sp2 | * | cpe:2.3:o:microsoft:windows_server_2008_sp2:*:sp2:*:*:*:*:*:* |
microsoft | windows_server_2008_sp2 | * | cpe:2.3:o:microsoft:windows_server_2008_sp2:*:sp2:*:*:*:*:*:* |
More
6.6 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
7.7 High
AI Score
Confidence
High
9 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:S/C:C/I:C/A:C
0.027 Low
EPSS
Percentile
90.4%