Vulnerability Name:

CVE-2020-0646 (CCN-173845)

Assigned:2019-11-04
Published:2020-01-14
Updated:2022-07-12
Summary:A remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properly, aka '.NET Framework Remote Code Execution Injection Vulnerability'.
CVSS v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
9.1 Critical (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
9.8 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
9.1 Critical (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:10.0 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
10.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-91
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2020-0646

Source: MISC
Type: Exploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/156930/SharePoint-Workflows-XOML-Injection.html

Source: XF
Type: UNKNOWN
ms-dotnet-cve20200646-code-exec(173845)

Source: CCN
Type: Packet Storm Security [03-26-2020]
SharePoint Workflows XOML Injection

Source: CCN
Type: Microsoft Security TechCenter - January 2020
.NET Framework Remote Code Execution Injection Vulnerability

Source: N/A
Type: Patch, Vendor Advisory
N/A

Source: CCN
Type: CYBERSECURITY & INFRASTRUCTURE SECURITY AGENCY
KNOWN EXPLOITED VULNERABILITIES CATALOG

Source: EXPLOIT-DB
Type: EXPLOIT
Offensive Security Exploit Database [03-31-2020]

Vulnerable Configuration:Configuration 1:
  • cpe:/a:microsoft:.net_framework:3.0:sp2:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_10_1607:-:*:*:*:*:*:x86:*
  • OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_8.1:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_10:1607:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_10:1709:*:*:*:*:*:*:*

    • Configuration 5:
  • cpe:/a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_10:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1803:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_1803:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_10:1809:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*

    • Configuration 6:
  • cpe:/a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_10:1809:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1903:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_1909:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_10:1909:*:*:*:*:*:*:*

    • Configuration 7:
  • cpe:/a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:*
  • OR cpe:/o:microsoft:windows_7:-:sp1:*:*:*:*:*:*

    • Configuration 8:
  • cpe:/a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_rt_8.1:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_8.1:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*

    • Configuration 9:
  • cpe:/a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:*:*

    • Configuration 10:
  • cpe:/a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_10_1607:-:*:*:*:*:*:x86:*

    • Configuration 11:
  • cpe:/a:microsoft:.net_framework:4.6.1:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_rt_8.1:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_8.1:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*

    • Configuration 12:
  • cpe:/a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_rt_8.1:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1607:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_8.1:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1709:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1803:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:3.0:sp2:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:x32:*
  • OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:itanium:*
  • OR cpe:/o:microsoft:windows_7:-:sp1:*:*:ultimate_n:*:x86:*
  • OR cpe:/o:microsoft:windows_7::sp1:x64:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:*
  • OR cpe:/o:microsoft:windows_server_2012:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_8.1:-:-:-:*:-:-:x32:*
  • OR cpe:/o:microsoft:windows_8.1:::~~~~x64~:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:-:*:*:*:*:*:x32:*
  • OR cpe:/o:microsoft:windows_10:::~~~~x64~:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server:1803:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server:1903:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server:1909:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    microsoft .net framework 3.0 sp2
    microsoft windows server 2008 - sp2
    microsoft .net framework 3.5
    microsoft windows 10 1607
    microsoft windows server 2012 r2
    microsoft windows 8.1 *
    microsoft windows server 2012 -
    microsoft .net framework 4.6.2
    microsoft .net framework 3.5
    microsoft .net framework 4.7
    microsoft .net framework 4.7.1
    microsoft .net framework 4.7.2
    microsoft windows 10 1607
    microsoft windows server 2016 -
    microsoft .net framework 3.5
    microsoft .net framework 4.7.1
    microsoft .net framework 4.7.2
    microsoft windows 10 1709
    microsoft .net framework 3.5
    microsoft .net framework 4.7.2
    microsoft windows 10 -
    microsoft windows 10 1803
    microsoft windows server 2016 1803
    microsoft windows 10 1809
    microsoft windows server 2019 *
    microsoft .net framework 3.5
    microsoft .net framework 4.8
    microsoft windows 10 1809
    microsoft windows server 2019 *
    microsoft windows 10 1903
    microsoft windows server 2016 1909
    microsoft windows 10 1909
    microsoft .net framework 3.5.1
    microsoft windows server 2008 r2 sp1
    microsoft windows server 2008 r2 sp1
    microsoft windows 7 - sp1
    microsoft .net framework 4.5.2
    microsoft windows rt 8.1 *
    microsoft windows server 2008 r2 sp1
    microsoft windows server 2012 r2
    microsoft windows 8.1 *
    microsoft windows server 2008 - sp2
    microsoft windows 7 - sp1
    microsoft windows server 2012 -
    microsoft .net framework 4.6
    microsoft windows server 2008 - sp2
    microsoft .net framework 4.6.2
    microsoft .net framework 4.7
    microsoft .net framework 4.7.1
    microsoft .net framework 4.7.2
    microsoft windows 10 1607
    microsoft .net framework 4.6.1
    microsoft .net framework 4.6
    microsoft .net framework 4.6.2
    microsoft .net framework 4.7
    microsoft .net framework 4.7.1
    microsoft .net framework 4.7.2
    microsoft windows rt 8.1 *
    microsoft windows server 2008 r2 sp1
    microsoft windows server 2012 r2
    microsoft windows 8.1 *
    microsoft windows 7 - sp1
    microsoft windows server 2012 -
    microsoft .net framework 4.8
    microsoft windows rt 8.1 *
    microsoft windows server 2008 r2 sp1
    microsoft windows server 2012 r2
    microsoft windows 10 1607
    microsoft windows server 2016 -
    microsoft windows 8.1 *
    microsoft windows 7 - sp1
    microsoft windows server 2012 -
    microsoft windows 10 1709
    microsoft windows 10 1803
    microsoft .net framework 2.0 sp2
    microsoft .net framework 3.5
    microsoft .net framework 3.5.1
    microsoft .net framework 3.0 sp2
    microsoft .net framework 4.5.2
    microsoft .net framework 4.6
    microsoft .net framework 4.7.2
    microsoft .net framework 4.8
    microsoft windows server 2008 sp2
    microsoft windows server 2008 sp2
    microsoft windows server 2008
    microsoft windows 7 - sp1
    microsoft windows 7 sp1
    microsoft windows server 2008 r2
    microsoft windows server 2008 r2
    microsoft windows server 2012
    microsoft windows 8.1 - -
    microsoft windows 8.1
    microsoft windows server 2012 r2
    microsoft windows rt 8.1 -
    microsoft windows 10 -
    microsoft windows 10
    microsoft windows server 2016
    microsoft windows server 1803
    microsoft windows server 2019
    microsoft windows server 1903
    microsoft windows server 1909