CVE-2018-8421 - Vulnerability Details

- NET: RCE when processing untrusted input

Description

A remote code execution vulnerability exists when Microsoft .NET Framework processes untrusted input, aka ".NET Framework Remote Code Execution Vulnerability." This affects Microsoft .NET Framework 4.6, Microsoft .NET Framework 3.5, Microsoft .NET Framework 4.7/4.7.1/4.7.2, Microsoft .NET Framework 3.0, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2, Microsoft .NET Framework 4.5.2, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2, Microsoft .NET Framework 4.7.1/4.7.2, Microsoft .NET Framework 4.7.2, Microsoft .NET Framework 2.0.

Published: 2018-09-13

Score: 9.8 Critical

EPSS: 52.8% High

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Microsoft

Microsoft .NET Framework

affected

Version	Status	Constraints
`2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2`	affected	—
`2.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2`	affected	—
`2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2`	affected	—
`3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2`	affected	—
`3.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2`	affected	—
`3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2`	affected	—
`3.5 on Windows 10 for 32-bit Systems`	affected	—
`3.5 on Windows 10 for x64-based Systems`	affected	—
`3.5 on Windows 10 Version 1607 for 32-bit Systems`	affected	—
`3.5 on Windows 10 Version 1607 for x64-based Systems`	affected	—
`3.5 on Windows 10 Version 1703 for 32-bit Systems`	affected	—
`3.5 on Windows 10 Version 1703 for x64-based Systems`	affected	—
`3.5 on Windows 10 Version 1709 for 32-bit Systems`	affected	—
`3.5 on Windows 10 Version 1709 for x64-based Systems`	affected	—
`3.5 on Windows 10 Version 1803 for 32-bit Systems`	affected	—
`3.5 on Windows 10 Version 1803 for x64-based Systems`	affected	—
`3.5 on Windows 8.1 for 32-bit systems`	affected	—
`3.5 on Windows 8.1 for x64-based systems`	affected	—
`3.5 on Windows Server 2012`	affected	—
`3.5 on Windows Server 2012 (Server Core installation)`	affected	—
`3.5 on Windows Server 2012 R2`	affected	—
`3.5 on Windows Server 2012 R2 (Server Core installation)`	affected	—
`3.5 on Windows Server 2016`	affected	—
`3.5 on Windows Server 2016 (Server Core installation)`	affected	—
`3.5 on Windows Server, version 1709 (Server Core Installation)`	affected	—
`3.5 on Windows Server, version 1803 (Server Core Installation)`	affected	—
`3.5.1 on Windows 7 for 32-bit Systems Service Pack 1`	affected	—
`3.5.1 on Windows 7 for x64-based Systems Service Pack 1`	affected	—
`3.5.1 on Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1`	affected	—
`3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1`	affected	—
`3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)`	affected	—
`4.5.2 on Windows 7 for 32-bit Systems Service Pack 1`	affected	—
`4.5.2 on Windows 7 for x64-based Systems Service Pack 1`	affected	—
`4.5.2 on Windows 8.1 for 32-bit systems`	affected	—
`4.5.2 on Windows 8.1 for x64-based systems`	affected	—
`4.5.2 on Windows RT 8.1`	affected	—
`4.5.2 on Windows Server 2008 for 32-bit Systems Service Pack 2`	affected	—
`4.5.2 on Windows Server 2008 for x64-based Systems Service Pack 2`	affected	—
`4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1`	affected	—
`4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)`	affected	—
`4.5.2 on Windows Server 2012`	affected	—
`4.5.2 on Windows Server 2012 (Server Core installation)`	affected	—
`4.5.2 on Windows Server 2012 R2`	affected	—
`4.5.2 on Windows Server 2012 R2 (Server Core installation)`	affected	—
`4.6 on Windows Server 2008 for 32-bit Systems Service Pack 2`	affected	—
`4.6 on Windows Server 2008 for x64-based Systems Service Pack 2`	affected	—
`4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems`	affected	—
`4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems`	affected	—
`4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016`	affected	—
`4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 (Server Core installation)`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows 7 for 32-bit Systems Service Pack 1`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows 7 for x64-based Systems Service Pack 1`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows 8.1 for 32-bit systems`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows 8.1 for x64-based systems`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows RT 8.1`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2012`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation)`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2012 R2`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2012 R2 (Server Core installation)`	affected	—
`4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systems`	affected	—
`4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based Systems`	affected	—
`4.7.1/4.7.2 on Windows Server, version 1709 (Server Core Installation)`	affected	—
`4.7.2 on Windows 10 Version 1803 for 32-bit Systems`	affected	—
`4.7.2 on Windows 10 Version 1803 for x64-based Systems`	affected	—
`4.7.2 on Windows Server, version 1803 (Server Core Installation)`	affected	—
`4.7/4.7.1/4.7.2 on Windows 10 Version 1703 for 32-bit Systems`	affected	—
`4.7/4.7.1/4.7.2 on Windows 10 Version 1703 for x64-based Systems`	affected	—

Configuration 1 [-]

AND

OR	cpe:2.3:a:microsoft:.net_framework:2.0:sp2::::::
	cpe:2.3:a:microsoft:.net_framework:3.0:sp2::::::

cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*

Configuration 2 [-]

AND

cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*

OR	cpe:2.3:o:microsoft:windows_10:-:::::::*
	cpe:2.3:o:microsoft:windows_10:1607:::::::*
	cpe:2.3:o:microsoft:windows_10:1703:::::::*
	cpe:2.3:o:microsoft:windows_10:1709:::::::*
	cpe:2.3:o:microsoft:windows_10:1803:::::::*
	cpe:2.3:o:microsoft:windows_8.1::::::::
	cpe:2.3:o:microsoft:windows_server_2012::::::::
	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*
	cpe:2.3:o:microsoft:windows_server_2016::::::::

Configuration 3 [-]

AND

cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*

OR	cpe:2.3:o:microsoft:windows_7:-:sp1::::::
	cpe:2.3:o:microsoft:windows_server_2008:r2:sp1::::::

Configuration 4 [-]

AND

cpe:2.3:a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*

OR	cpe:2.3:o:microsoft:windows_7:-:sp1::::::
	cpe:2.3:o:microsoft:windows_8.1::::::::
	cpe:2.3:o:microsoft:windows_rt_8.1:-:::::::*
	cpe:2.3:o:microsoft:windows_server_2008::sp2::::::*
	cpe:2.3:o:microsoft:windows_server_2008:r2:sp1::::::
	cpe:2.3:o:microsoft:windows_server_2012::::::::
	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*

Configuration 5 [-]

AND

cpe:2.3:a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*

OR	cpe:2.3:o:microsoft:windows_7:-:sp1::::::
	cpe:2.3:o:microsoft:windows_8.1::::::::
	cpe:2.3:o:microsoft:windows_rt_8.1:-:::::::*
	cpe:2.3:o:microsoft:windows_server_2008::sp2::::::*
	cpe:2.3:o:microsoft:windows_server_2008:r2:sp1::::::
	cpe:2.3:o:microsoft:windows_server_2012::::::::
	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*

Configuration 6 [-]

AND

cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*

cpe:2.3:o:microsoft:windows_server_2008:*:sp2:*:*:*:*:*:*

Configuration 7 [-]

AND

OR	cpe:2.3:a:microsoft:.net_framework:4.6.2:::::::*
	cpe:2.3:a:microsoft:.net_framework:4.7:::::::*
	cpe:2.3:a:microsoft:.net_framework:4.7.1:::::::*
	cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::*

OR	cpe:2.3:o:microsoft:windows_10:1607:::::::*
	cpe:2.3:o:microsoft:windows_server_2016:-:::::::*

Configuration 8 [-]

AND

OR	cpe:2.3:a:microsoft:.net_framework:4.6:::::::*
	cpe:2.3:a:microsoft:.net_framework:4.6.1:::::::*
	cpe:2.3:a:microsoft:.net_framework:4.6.2:::::::*
	cpe:2.3:a:microsoft:.net_framework:4.7:::::::*
	cpe:2.3:a:microsoft:.net_framework:4.7.1:::::::*
	cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::*

OR	cpe:2.3:o:microsoft:windows_7:-:sp1::::::
	cpe:2.3:o:microsoft:windows_8.1::::::::
	cpe:2.3:o:microsoft:windows_rt_8.1:-:::::::*
	cpe:2.3:o:microsoft:windows_server_2008:r2:sp1::::::
	cpe:2.3:o:microsoft:windows_server_2012::::::::
	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*

Configuration 9 [-]

AND

OR	cpe:2.3:a:microsoft:.net_framework:4.7.1:::::::*
	cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::*

OR	cpe:2.3:o:microsoft:windows_10:1709:::::::*
	cpe:2.3:o:microsoft:windows_server:1709:::::::*

Configuration 10 [-]

AND

cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*

OR	cpe:2.3:o:microsoft:windows_10:1803:::::::*
	cpe:2.3:o:microsoft:windows_server:1803:::::::*

Configuration 11 [-]

AND

OR	cpe:2.3:a:microsoft:.net_framework:4.7:::::::*
	cpe:2.3:a:microsoft:.net_framework:4.7.1:::::::*
	cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::*

cpe:2.3:o:microsoft:windows_10:1703:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

The EPSS score is 0.52818.

Key SSVC decision points have not yet been added.

References

Link	Providers
http://www.securityfocus.com/bid/105222
http://www.securitytracker.com/id/1041636
https://nvd.nist.gov/vuln/detail/CVE-2018-8421
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8421
https://www.cve.org/CVERecord?id=CVE-2018-8421

History

No history.

Subscriptions

Microsoft .net Framework Windows 10 Windows 7 Windows 8.1 Windows Rt 8.1 Windows Server Windows Server 2008 Windows Server 2012 Windows Server 2016

MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2018-09-13T00:00:00.000Z

Updated: 2024-08-05T06:54:36.433Z

Reserved: 2018-03-14T00:00:00.000Z

Link: CVE-2018-8421

Vulnrichment

No data.

NVD

Status : Modified

Published: 2018-09-13T00:29:02.490

Modified: 2024-11-21T04:13:47.517

Link: CVE-2018-8421

Redhat

Severity : Moderate

Publid Date: 2018-09-13T00:00:00Z

Links: CVE-2018-8421 - Bugzilla

OpenCVE Enrichment

No data.

Weaknesses

CWE-20

Tracking

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

Subscriptions

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