CVE-2020-1147: high-severity vulnerability in Microsoft .NET Framework 2.0
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100Vexday Risk Score
Patch now. It under exploitation confirmed by CISA and has a working public exploit.
ssvc Actcvss 7.8epss 96%
from disclosure to weapon34 days
Published on NVDJul 14
1st PoC+34d
metasploitJul 14
CISA KEV+477d
What the vendors declare (VEX)
Official vendor statements in CSAF/VEX format: whether their product is affected, already fixed, or ruled out — and why. These are the vendor's assertions, not Vexday's judgment.
Red HatVEX document ↗
Fixed
6 products (121 components)
Red Hat Enterprise Linux AppStream (v. 8) · .NET Core on Red Hat Enterprise Linux ComputeNode (v. 7) · .NET Core on Red Hat Enterprise Linux Server (v. 7) · .NET Core on Red Hat Enterprise Linux Workstation (v. 7) · Red Hat Enterprise Linux AppStream E4S (v. 8.0) · and others 1
Action required by CISAfederal deadline: 2022-05-03
Apply updates per vendor instructions.
In short
A vulnerability in .NET Framework, SharePoint, and Visual Studio allows attackers to run malicious code remotely by sending specially crafted XML files. The software doesn't properly validate the XML source, enabling code execution on affected systems.
Technical detail
Remote code execution vulnerability triggered via insufficient XML input validation in .NET Framework, SharePoint, and Visual Studio. Attackers can exploit this by sending malicious XML markup that bypasses source verification checks, leading to arbitrary code execution with the privileges of the affected application.
Summary generated and translated by AI from the official description.
The full analysis of this CVE is available in Portuguese →
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'.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
Microsoft · Microsoft .NET Framework 2.0Microsoft · Microsoft .NET Framework 3.0Microsoft · Microsoft .NET Framework 3.5Microsoft · Microsoft .NET Framework 3.5.1Microsoft · 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 SystemsMicrosoft · 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 SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016Microsoft · 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 · Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for 32-bit SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for x64-based SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for ARM64-based SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for 32-bit SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for ARM64-based SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for x64-based SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019Microsoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation)Microsoft · Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server, version 1803 (Server Core Installation)Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for ARM64-based SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for 32-bit SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for ARM64-based SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for x64-based SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for 32-bit SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for ARM64-based SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 2004 for x64-based SystemsMicrosoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation)Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation)Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1909 (Server Core installation)Microsoft · Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 2004 (Server Core installation)Microsoft · Microsoft .NET Framework 4.5.2Microsoft · Microsoft .NET Framework 4.6Microsoft · Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2Microsoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit SystemsMicrosoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based SystemsMicrosoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit SystemsMicrosoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based SystemsMicrosoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit SystemsMicrosoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based SystemsMicrosoft · Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1Microsoft · Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1Microsoft · Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systemsMicrosoft · Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systemsMicrosoft · Microsoft .NET Framework 4.8 on Windows RT 8.1Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2012Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2012 R2Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation)Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation)Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2016Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation)Microsoft · Microsoft .NET Framework 4.8 on Windows Server, version 1803 (Server Core Installation)Microsoft · Microsoft SharePoint Enterprise ServerMicrosoft · Microsoft SharePoint ServerMicrosoft · Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)Microsoft · Microsoft Visual Studio 2019Microsoft · Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)Microsoft · Microsoft Visual Studio 2019 version 16.6 (includes 16.0 - 16.5)Microsoft · .NET Corepublic PoCs found — 5
exploitdbwww.exploit-db.com/exploits/48747unverifiedexploitdbwww.exploit-db.com/exploits/50151unverifiedcve_referencepacketstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-Deserialization.htmlunverifiedcve_referencepacketstormsecurity.com/files/158876/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.htmlunverifiedcve_referencepacketstormsecurity.com/files/163644/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.htmlunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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References
http://packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-Deserialization.htmlhttp://packetstormsecurity.com/files/158876/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.htmlhttp://packetstormsecurity.com/files/163644/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.htmlhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1147https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1147https://www.exploitalert.com/view-details.html?id=35992