CVE-2019-0545 - Vulnerability Details

- Core: NCL - SocketsHttpHandler mishandling 1xx response as a final response leads to info disclosure

Description

An information disclosure vulnerability exists in .NET Framework and .NET Core which allows bypassing Cross-origin Resource Sharing (CORS) configurations, aka ".NET Framework Information Disclosure Vulnerability." This affects Microsoft .NET Framework 2.0, Microsoft .NET Framework 3.0, 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, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2, Microsoft .NET Framework 4.7/4.7.1/4.7.2, .NET Core 2.1, Microsoft .NET Framework 4.7.1/4.7.2, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6/4.6.1/4.6.2, .NET Core 2.2, Microsoft .NET Framework 4.7.2.

Published: 2019-01-08

Score: 7.5 High

EPSS: 9.6% Low

KEV: No

Impact:

Action:

Analysis

No analysis available yet.

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

.NET Core

affected

Version	Status	Constraints
`2.1`	affected	—
`2.2`	affected	—

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 ARM64-based 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 ARM64-based Systems`	affected	—
`3.5 on Windows 10 Version 1803 for x64-based Systems`	affected	—
`3.5 on Windows 10 Version 1809 for 32-bit Systems`	affected	—
`3.5 on Windows 10 Version 1809 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 2019`	affected	—
`3.5 on Windows Server 2019 (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 on Windows 10 for 32-bit Systems`	affected	—
`4.6/4.6.1/4.6.2 on Windows 10 for x64-based Systems`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 7 for 32-bit Systems Service Pack 1`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 7 for x64-based Systems Service Pack 1`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for 32-bit systems`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for x64-based systems`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows RT 8.1`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation)`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2`	affected	—
`4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 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 ARM64-based 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 ARM64-based Systems`	affected	—
`4.7.2 on Windows 10 Version 1803 for x64-based Systems`	affected	—
`4.7.2 on Windows 10 Version 1809 for 32-bit Systems`	affected	—
`4.7.2 on Windows 10 Version 1809 for x64-based Systems`	affected	—
`4.7.2 on Windows Server 2019`	affected	—
`4.7.2 on Windows Server 2019 (Server Core installation)`	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_10:1809:::::::*
	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::::::::
	cpe:2.3:o:microsoft:windows_server_2019:-:::::::*

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:::::itanium:*
	cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:::::x64:*

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:::::x64:*
	cpe:2.3:o:microsoft:windows_server_2012::::::::
	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*

Configuration 5 [-]

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 6 [-]

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 7 [-]

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 8 [-]

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 9 [-]

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:*:*:*:*:*:*:*

Configuration 10 [-]

OR	cpe:2.3:a:microsoft:.net_core:2.1:::::::*
	cpe:2.3:a:microsoft:.net_core:2.2:::::::*

Package	CPE	Advisory	Released Date
.NET Core on Red Hat Enterprise Linux
rh-dotnet21-0:2.1-6.el7	cpe:/a:redhat:rhel_dotnet:2.1::el7	RHSA-2019:0040	2019-01-09T00:00:00Z
rh-dotnet21-dotnet-0:2.1.503-1.el7	cpe:/a:redhat:rhel_dotnet:2.1::el7	RHSA-2019:0040	2019-01-09T00:00:00Z
rh-dotnet22-0:2.2-2.el7	cpe:/a:redhat:rhel_dotnet:2.1::el7	RHSA-2019:0040	2019-01-09T00:00:00Z
rh-dotnet22-dotnet-0:2.2.102-1.el7	cpe:/a:redhat:rhel_dotnet:2.1::el7	RHSA-2019:0040	2019-01-09T00:00:00Z

No data available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2022-2071	An information disclosure vulnerability exists in .NET Framework and .NET Core which allows bypassing Cross-origin Resource Sharing (CORS) configurations, aka ".NET Framework Information Disclosure Vulnerability." This affects Microsoft .NET Framework 2.0, Microsoft .NET Framework 3.0, 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, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2, Microsoft .NET Framework 4.7/4.7.1/4.7.2, .NET Core 2.1, Microsoft .NET Framework 4.7.1/4.7.2, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6/4.6.1/4.6.2, .NET Core 2.2, Microsoft .NET Framework 4.7.2.
Github GHSA	GHSA-2xjx-v99w-gqf3	Exposure of Sensitive Information in System.Net.Http

No CVSS v4.0

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact None

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.09611.

Key SSVC decision points have not yet been added.

References

Link	Providers
http://www.securityfocus.com/bid/106405
https://access.redhat.com/errata/RHSA-2019:0040
https://nvd.nist.gov/vuln/detail/CVE-2019-0545
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0545
https://www.cve.org/CVERecord?id=CVE-2019-0545

History

No history.

Subscriptions

Microsoft .net Core .net Framework Windows 10 Windows 7 Windows 8.1 Windows Rt 8.1 Windows Server Windows Server 2008 Windows Server 2012 Windows Server 2016 Windows Server 2019

Redhat Rhel Dotnet

MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2019-01-08T21:00:00.000Z

Updated: 2024-08-04T17:51:26.700Z

Reserved: 2018-11-26T00:00:00.000Z

Link: CVE-2019-0545

Vulnrichment

No data.

NVD

Status : Modified

Published: 2019-01-08T21:29:00.580

Modified: 2026-06-17T02:08:20.283

Link: CVE-2019-0545

Redhat

Severity : Moderate

Publid Date: 2019-01-08T00:00:00Z

Links: CVE-2019-0545 - Bugzilla

OpenCVE Enrichment

No data.

Weaknesses

CWE-200
Exposure of Sensitive Information to an Unauthorized Actor

Tracking

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact None

Availability Impact None

Subscriptions

JSON object

JSON object

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JSON object

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