CVE-2019-0545 Exposure of Sensitive Information in System.Net.Http
An information disclosure vulnerability in .NET Framework and Core allows bypassing CORS configurations, potentially exposing sensitive data to unauthorized origins.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-0545?
CVE-2019-0545 is a high-severity vulnerability in Microsoft .Net Framework, published on 8 Jan 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-200
Which versions are affected by CVE-2019-0545?
4 open source packages ship an affected version, including Microsoft.NETCore.App. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
Microsoft.NETCore.App NuGet | From 2.1.0 | 2.1.7 |
Microsoft.NETCore.App NuGet | From 2.1.0 | 2.1.7 |
Microsoft.NETCore.App NuGet | From 2.2.0 | 2.2.1 |
Microsoft.NETCore.App NuGet | From 2.2.0 | 2.2.1 |
Products include Microsoft .Net Core, Microsoft .Net Framework.
How do I fix CVE-2019-0545?
Upgrade Microsoft.NETCore.App to a fixed version for your release line: 2.1.7 or 2.2.1.
Is CVE-2019-0545 being exploited?
There is no known exploitation of CVE-2019-0545 in the wild and no public exploit code.
Other vulnerabilities in Microsoft .Net Framework
- CVE-2020-1147 Microsoft .NET Framework, SharePoint, and Visual Studio Remote Code Execution
- CVE-2020-0605 Code injection in .NET Core
- CVE-2020-0606 Remote code execution in Microsoft.WindowsDesktop.App.Ref
- CVE-2019-1301 High severity vulnerability that affects System.Management.Automation
- CVE-2019-0820 Regular Expression Denial of Service in System.Text.RegularExpressions
Sources
Also known as GHSA-2xjx-v99w-gqf3.