CVE-2018-0764 — .NET and .NET Core Denial of Service Vulnerability

Executive Summary

A denial of service vulnerability exists when .NET and .NET Core improperly process XML documents. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET application. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to a .NET (or .NET core) application. The update addresses the vulnerability by correcting how .NET and .NET Core applications handle XML document processing.

Overview

Important

MS Severity

Not Exploited

MS Exploit Status

Exploitation Unlikely

MS Exploit Likelihood

Category Denial of Service

Released Jan 9 2018

Last Updated Jan 9 2018

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

EPSS Score

No EPSS score available for this CVE.

View on FIRST.org

Affected Products

29 affected products

Product	KB Article	Severity	Impact	Restart Required
.NET Core 1.0	`Commit (Security Update)`	Important	Denial of Service	Yes
.NET Core 1.1	`Commit (Security Update)`	Important	Denial of Service	Yes
.NET Core 2.0	`Commit (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 4054996 (Monthly Rollup) 4054174 (Security Only) Important Denial of Service 4049019, 4041086 3122646 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2 4054996 (Monthly Rollup) 4054174 (Security Update) Important Denial of Service 4049019, 4041086 3122646 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 4054996 (Monthly Rollup) 4054174 (Security Only) Important Denial of Service 4049019, 4041086 3122646 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 4054996 (Monthly Rollup) 4054174 (Security Only) Important Denial of Service 4049019, 4041086 3122646 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2 4054996 (Monthly Rollup) 4054174 (Security Update) Important Denial of Service 4049019, 4041086 3122646 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 4054996 (Monthly Rollup) 4054174 (Security Only) Important Denial of Service 4049019, 4041086 3122646 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows 10 for 32-bit Systems	`4056893 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 3.5 on Windows 10 for x64-based Systems	`4056893 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1511 for 32-bit Systems	`4056888 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1511 for x64-based Systems	`4056888 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for 32-bit Systems	`4056890 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for x64-based Systems	`4056890 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for 32-bit Systems	`4056891 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for x64-based Systems	`4056891 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems 4054999 (Monthly Rollup) 4054177 (Security Only) Important Denial of Service 4049017, 4041085 3122651 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems 4054999 (Monthly Rollup) 4054177 (Security Only) Important Denial of Service 4049017, 4041085 3122651 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows Server 2012 4054997 (Monthly Rollup) 4054175 (Security Only) Important Denial of Service 4049018, 4041084 3122655, 3122658 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) 4054997 (Monthly Rollup) 4054175 (Security Only) Important Denial of Service 4049018, 4041084 3122655, 3122658 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows Server 2012 R2 4054999 (Monthly Rollup) 4054177 (Security Only) Important Denial of Service 4049017, 4041085 3122651 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) 4054999 (Monthly Rollup) 4054177 (Security Only) Important Denial of Service 4049017, 4041085 3122651 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows Server 2016	`4056890 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 3.5 on Windows Server 2016 (Server Core installation)	`4056890 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1 4054998 (Monthly Rollup) 4054176 (Security Only) Important Denial of Service 4049016, 4041083 2973112, 3122648 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1 4054998 (Monthly Rollup) 4054176 (Security Only) Important Denial of Service 4049016, 4041083 2973112, 3122648 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 4054998 (Monthly Rollup) 4054176 (Security Only) Important Denial of Service 4049016, 4041083 2973112, 3122648 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4054998 (Monthly Rollup) 4054176 (Security Only) Important Denial of Service 4049016, 4041083 2973112, 3122648 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4054998 (Monthly Rollup) 4054176 (Security Only) Important Denial of Service 4049016, 4041083 2973112, 3122648 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1 4054995 (Monthly Rollup) 4054172 (Security Only) Important Denial of Service 4049016, 4041083 3122656 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows 7 for x64-based Systems Service Pack 1 4054995 (Monthly Rollup) 4054172 (Security Only) Important Denial of Service 4049016, 4041083 3122656 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows 8.1 for 32-bit systems 4054993 (Monthly Rollup) 4054170 (Security Only) Important Denial of Service 4049017, 4041085 3122654 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows 8.1 for x64-based systems 4054993 (Monthly Rollup) 4054170 (Security Only) Important Denial of Service 4049017, 4041085 3122654 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows RT 8.1	`4054993 (Monthly Rollup)`	Important	Denial of Service	Maybe
Microsoft .NET Framework 4.5.2 on Windows Server 2008 for 32-bit Systems Service Pack 2 4054995 (Monthly Rollup) 4054172 (Security Only) Important Denial of Service 4049017, 4041086 3122656 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2008 for x64-based Systems Service Pack 2 4054995 (Monthly Rollup) 4054172 (Security Only) Important Denial of Service 4049017, 4041086 3122656 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4054995 (Monthly Rollup) 4054172 (Security Only) Important Denial of Service 4049016, 4041083 3122656 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4054995 (Monthly Rollup) 4054172 (Security Only) Important Denial of Service 4049016, 4041083 3122656 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2012 4054994 (Monthly Rollup) 4054171 (Security Only) Important Denial of Service 4049018, 4041084 3122655 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2012 (Server Core installation) 4054994 (Monthly Rollup) 4054171 (Security Only) Important Denial of Service 4049018, 4041084 3122655 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 4054993 (Monthly Rollup) 4054170 (Security Only) Important Denial of Service 4049017, 4041085 3122654 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 (Server Core installation) 4054993 (Monthly Rollup) 4054170 (Security Only) Important Denial of Service 4049017, 4041085 3122654 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6 on Windows 10 for 32-bit Systems	`4056893 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 4.6 on Windows 10 for x64-based Systems	`4056893 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 4.6 on Windows Server 2008 for 32-bit Systems Service Pack 2 4055002 (Monthly Rollup) 4054183 (Security Only) Important Denial of Service 4049019, 4041086 3122661 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6 on Windows Server 2008 for x64-based Systems Service Pack 2 4055002 (Monthly Rollup) 4054183 (Security Only) Important Denial of Service 4049019, 4041086 3122661 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6.1 on Windows 10 Version 1511 for 32-bit Systems	`4056888 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 4.6.1 on Windows 10 Version 1511 for x64-based Systems	`4056888 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 4.6.2/4.7 on Windows 10 Version 1607 for 32-bit Systems	`4056890 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 4.6.2/4.7 on Windows 10 Version 1607 for x64-based Systems	`4056890 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 4.6.2/4.7 on Windows Server 2016	`4056890 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 4.6.2/4.7 on Windows Server 2016 (Server Core installation)	`4056890 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7 on Windows 7 for 32-bit Systems Service Pack 1 4074880 (Monthly Rollup) 4054183 (Security Only) Important Denial of Service 4041083; 4049016 3122661 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7 on Windows 7 for x64-based Systems Service Pack 1 4074880 (Monthly Rollup) 4054183 (Security Only) Important Denial of Service 4049016, 4041083 3122661 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7 on Windows 8.1 for 32-bit systems 4055001 (Monthly Rollup) 4054182 (Security Only) Important Denial of Service 4049017, 4041085 3122660 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7 on Windows 8.1 for x64-based systems 4055001 (Monthly Rollup) 4054182 (Security Only) Important Denial of Service 4049017, 4041085 3122660 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7 on Windows RT 8.1	`4055001 (Monthly Rollup)`	Important	Denial of Service	Maybe
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4074880 (Monthly Rollup) 4054183 (Security Only) Important Denial of Service 4049016, 4041083 3122661 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4074880 (Monthly Rollup) 4054183 (Security Only) Important Denial of Service 4049016, 4041083 3122661 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7 on Windows Server 2012 4055000 (Monthly Rollup) 4054181 (Security Only) Important Denial of Service 4049018, 4041084 3122658 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7 on Windows Server 2012 (Server Core installation) 4055000 (Monthly Rollup) 4054181 (Security Only) Important Denial of Service 4049018, 4041084 3122658 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7 on Windows Server 2012 R2 4055001 (Monthly Rollup) 4054182 (Security Only) Important Denial of Service 4049017, 4041085 3122660 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7 on Windows Server 2012 R2 (Server Core installation) 4055001 (Monthly Rollup) 4054182 (Security Only) Important Denial of Service 4049017, 4041085 3122660 Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.7 on Windows 10 Version 1703 for 32-bit Systems	`4056891 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 4.7 on Windows 10 Version 1703 for x64-based Systems	`4056891 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 4.7.1 on Windows 10 Version 1709 for 32-bit Systems	`4056892 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 4.7.1 on Windows 10 Version 1709 for x64-based Systems	`4056892 (Security Update)`	Important	Denial of Service	Yes
Microsoft .NET Framework 4.7.1 on Windows Server, version 1709 (Server Core Installation)	`4056892 (Security Update)`	Important	Denial of Service	Yes
PowerShell Core 6.0.0	`Release Notes (Security Update)`	Important	Denial of Service	No

Patches

9 patches

Article	Type	Restart
`Commit`	Security Update	Yes
`4056893`	Security Update	Yes
`4056888`	Security Update	Yes
`4056890`	Security Update	Yes
`4056891`	Security Update	Yes
`4054993`	Monthly Rollup	Maybe
`4055001`	Monthly Rollup	Maybe
`4056892`	Security Update	Yes
`Release Notes`	Security Update	No

Known Exploits

No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.

Acknowledgments

None

References

MSRC Advisory MITRE NVD