CVE-2020-17049— Kerberos KDC Security Feature Bypass Vulnerability
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I. Basic Information for CVE-2020-17049
Vulnerability Information
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Vulnerability Title
Kerberos KDC Security Feature Bypass Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Microsoft Windows Kerberos 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Kerberos for Windows是美国微软（Microsoft）公司的一个用于在网络集群中进行身份验证的软件。Kerberos 同时作为一种网络认证协议，其设计目标是通过密钥系统为客户机/服务器应用程序提供强大的认证服务。 多款 Microsoft 产品存在权限许可和访问控制问题漏洞,目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。以下产品及版本受到影响:Windows Server, version 20H2 (Server Core Installation),W
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Microsoft | Windows Server 2019 | 10.0.0 ~ 10.0.17763.2061 | cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2061:*:*:*:*:*:*:* | |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.0 ~ 10.0.17763.2061 | cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2061:*:*:*:*:*:*:* | |
| Microsoft | Windows Server, version 1909 (Server Core installation) | 10.0.0 ~ publication | cpe:2.3:o:microsoft:windows_server_1909:*:*:*:*:*:*:*:* | |
| Microsoft | Windows Server, version 1903 (Server Core installation) | 10.0.0 ~ publication | cpe:2.3:o:microsoft:windows_server_1903:*:*:*:*:*:*:*:* | |
| Microsoft | Windows Server version 2004 | 10.0.0 ~ 10.0.19041.1110 | cpe:2.3:o:microsoft:windows_server_2004:10.0.19041.1110:*:*:*:*:*:*:* | |
| Microsoft | Windows Server 2016 | 10.0.0 ~ 10.0.14393.4530 | cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.4530:*:*:*:*:*:*:* | |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.0 ~ 10.0.14393.4530 | cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.4530:*:*:*:*:*:*:* | |
| Microsoft | Windows Server 2008 Service Pack 2 | 6.0.0 ~ 6.0.6003.21167 | cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21167:*:*:*:*:*:x64:* | |
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) | 6.0.0 ~ 6.0.6003.21167 | cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21167:*:*:*:*:*:x64:* | |
| Microsoft | Windows Server 2008 Service Pack 2 | 6.0.0 ~ 6.0.6003.21167 | cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21167:*:*:*:*:*:x86:* | |
| Microsoft | Windows Server 2008 R2 Service Pack 1 | 6.1.0 ~ 6.1.7601.25661 | cpe:2.3:o:microsoft:windows_server_2008_R2:6.1.7601.25661:*:*:*:*:*:x64:* | |
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) | 6.0.0 ~ 6.1.7601.25661 | cpe:2.3:o:microsoft:windows_server_2008_R2:6.1.7601.25661:*:*:*:*:*:x64:* | |
| Microsoft | Windows Server 2012 | 6.2.0 ~ 6.2.9200.23409 | cpe:2.3:o:microsoft:windows_server_2012:6.2.9200.23409:*:*:*:*:*:x64:* | |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.0 ~ 6.2.9200.23409 | cpe:2.3:o:microsoft:windows_server_2012:6.2.9200.23409:*:*:*:*:*:x64:* | |
| Microsoft | Windows Server 2012 R2 | 6.3.0 ~ 6.3.9600.20069 | cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.20069:*:*:*:*:*:x64:* | |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.0 ~ 6.3.9600.20069 | cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.20069:*:*:*:*:*:x64:* | |
| Microsoft | Windows Server version 20H2 | 10.0.0 ~ 10.0.19041.1110 | cpe:2.3:o:microsoft:windows_server_20H2:10.0.19041.1110:*:*:*:*:*:*:* |
II. Public POCs for CVE-2020-17049
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://security.gentoo.org/glsa/202309-06vendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2020-17049
Same Patch Batch · Microsoft · 2020-11-11 · 112 CVEs total
| CVE-2020-17051 | 9.8 CRITICAL | Windows Network File System Remote Code Execution Vulnerability |
| CVE-2020-17061 | 8.8 HIGH | Microsoft SharePoint Remote Code Execution Vulnerability |
| CVE-2020-17042 | 8.8 HIGH | Windows Print Spooler Remote Code Execution Vulnerability |
| CVE-2020-17084 | 8.5 HIGH | Microsoft Exchange Server Remote Code Execution Vulnerability |
| CVE-2020-16970 | 8.1 HIGH | Azure Sphere Unsigned Code Execution Vulnerability |
| CVE-2020-17016 | 8.0 HIGH | Microsoft SharePoint Server Spoofing Vulnerability |
| CVE-2020-17067 | 7.8 HIGH | Microsoft Excel Security Feature Bypass Vulnerability |
| CVE-2020-17043 | 7.8 HIGH | Windows Remote Access Elevation of Privilege Vulnerability |
| CVE-2020-17068 | 7.8 HIGH | Windows GDI+ Remote Code Execution Vulnerability |
| CVE-2020-17064 | 7.8 HIGH | Microsoft Excel Remote Code Execution Vulnerability |
| CVE-2020-17065 | 7.8 HIGH | Microsoft Excel Remote Code Execution Vulnerability |
| CVE-2020-17062 | 7.8 HIGH | Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability |
| CVE-2020-17055 | 7.8 HIGH | Windows Remote Access Elevation of Privilege Vulnerability |
| CVE-2020-17044 | 7.8 HIGH | Windows Remote Access Elevation of Privilege Vulnerability |
| CVE-2020-17041 | 7.8 HIGH | Windows Print Configuration Elevation of Privilege Vulnerability |
| CVE-2020-17037 | 7.8 HIGH | Windows WalletService Elevation of Privilege Vulnerability |
| CVE-2020-17038 | 7.8 HIGH | Win32k Elevation of Privilege Vulnerability |
| CVE-2020-17035 | 7.8 HIGH | Windows Kernel Elevation of Privilege Vulnerability |
| CVE-2020-17019 | 7.8 HIGH | Microsoft Excel Remote Code Execution Vulnerability |
| CVE-2020-17014 | 7.8 HIGH | Windows Print Spooler Elevation of Privilege Vulnerability |
Showing top 20 of 112 CVEs. View all on vendor page → →
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