CVE-2019-0545

HIGH

Exposure of Sensitive Information in System.Net.Http

Published May 14, 2022Updated November 8, 2023Source: osv

Summary

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.

Remediation

Upgrade to the fixed version using your package manager.

NuGet

Update Microsoft.NETCore.App to 2.2.1 or later

dotnet add package Microsoft.NETCore.App --version 2.2.1

NuGet

Update Microsoft.NETCore.App to 2.1.7 or later

dotnet add package Microsoft.NETCore.App --version 2.1.7

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (2)

Package	Ecosystem	Affected	Fixed In
Microsoft.NETCore.App	nuget	2.2.0	2.2.1
Microsoft.NETCore.App	nuget	2.1.0, 2.1.1, 2.1.2, 2.1.3 (+3 more)	2.1.7

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-200
Information ExposureMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Frequently Asked Questions

What is CVE-2019-0545?: Exposure of Sensitive Information in System.Net.Http This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2019-0545?: CVE-2019-0545 affects Microsoft.NETCore.App. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2019-0545 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-2xjx-v99w-gqf3

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