Attacker Value
High
CVE-2020-1147
CVE-2020-1147
(Last updated August 28, 2020) ▾
MITRE ATT&CK
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Metasploit Module
Description
A remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and Visual Studio when the software fails to check the source markup of XML file input, aka ‘.NET Framework, SharePoint Server, and Visual Studio Remote Code Execution Vulnerability’.
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Technical Analysis
A deserialization vulnerability exists within Microsoft Sharepoint that could allow an attacker to execute code on the server within the context of the service account. The attacker would need to authenticate to Sharepoint and submit a specially crafted POST request to a specific resource that implements the ContactLinksSuggestionsMicroView or InputFormContactLinksSuggestionsMicroView control. The following two resources meet this requirement:
/_layouts/15/quicklinks.aspx?Mode=Suggestion
/_layouts/15/quicklinksdialogform.aspx?Mode=Suggestion
Alternatively, an attacker with the correct privileges may create a page which implements this.
For more information, see the details analysis posted to srcincite.io by Steven Seeley.
CVSS V3 Severity and Metrics
Data provided by the National Vulnerability Database (NVD)
Base Score:
7.8 High
Impact Score:
5.9
Exploitability Score:
1.8
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
Required
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High
General Information
Vendors
- Microsoft
Products
- Microsoft SharePoint Enterprise Server,
- Microsoft SharePoint Server,
- Microsoft Visual Studio 2019,
- Microsoft Visual Studio 2019 version 16.6 (includes 16.0 - 16.5),
- Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8),
- Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3),
- .NET Core,
- Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2,
- Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit Systems,
- Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systems,
- Microsoft .NET Framework 4.8 on Windows Server, version 1803 (Server Core Installation),
- Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit Systems,
- Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systems,
- Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems,
- Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems,
- Microsoft .NET Framework 4.8 on Windows Server 2016,
- Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation),
- Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1,
- Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1,
- Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems,
- Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems,
- Microsoft .NET Framework 4.8 on Windows RT 8.1,
- Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1,
- Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation),
- Microsoft .NET Framework 4.8 on Windows Server 2012,
- Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation),
- Microsoft .NET Framework 4.8 on Windows Server 2012 R2,
- Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation),
- Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems,
- Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems,
- Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019,
- Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation),
- Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for 32-bit Systems,
- Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for x64-based Systems,
- Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1909 (Server Core installation),
- Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systems,
- Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based Systems,
- Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation),
- Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for 32-bit Systems,
- Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for x64-based Systems,
- Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server, version 1803 (Server Core Installation),
- Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems,
- Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems,
- Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems,
- Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019,
- Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation),
- Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems,
- Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems,
- Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016,
- Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 (Server Core installation),
- Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systems,
- Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based Systems,
- Microsoft .NET Framework 4.6,
- Microsoft .NET Framework 2.0,
- Microsoft .NET Framework 3.0,
- Microsoft .NET Framework 3.5,
- Microsoft .NET Framework 3.5.1,
- Microsoft .NET Framework 4.5.2,
- Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for 32-bit Systems,
- Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for x64-based Systems,
- Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for ARM64-based Systems,
- Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for ARM64-based Systems,
- Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for x64-based Systems,
- Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 2004 (Server Core installation),
- Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for ARM64-based Systems,
- Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for ARM64-based Systems,
- Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for 32-bit Systems,
- Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for ARM64-based Systems
Metasploit Modules
References
Miscellaneous
Also there is an online tool to check for CVE-2020-1147
https://securityforeveryone.com/tools/sharepointer-visualstudio-rce-cve-2020-1147