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
| Link | Resource |
|---|---|
| http://www.openwall.com/lists/oss-security/2021/11/10/3 | Mailing List Third Party Advisory |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17049 | Patch Vendor Advisory |
| https://security.gentoo.org/glsa/202309-06 |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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History
10 Sep 2024, 16:15
| Type | Values Removed | Values Added |
|---|---|---|
| Summary | (en) 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. |
31 Dec 2023, 19:15
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
|
| CPE | cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : 9.0
v3 : 6.6 |
| CWE | CWE-863 | |
| Summary | <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> |
30 Nov 2021, 22:22
| Type | Values Removed | Values Added |
|---|---|---|
| References | (MLIST) http://www.openwall.com/lists/oss-security/2021/11/10/3 - Mailing List, Third Party Advisory |
10 Nov 2021, 16:15
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | NVD-CWE-noinfo | |
| References |
|
Information
Published : 2020-11-11 07:15
Updated : 2024-09-10 16:15
NVD link : CVE-2020-17049
Mitre link : CVE-2020-17049
CVE.ORG link : CVE-2020-17049
JSON object : View
Products Affected
microsoft
- windows_server_2012
- windows_server_2019
- windows_server_2016
samba
- samba
CWE
CWE-863
Incorrect Authorization