CVE-2019-0981 Denial of service in ASP.NET Core
Attackers can cause a denial of service by sending improperly handled web requests to applications using .NET Framework or .NET Core.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-0981?
CVE-2019-0981 is a high-severity denial of service vulnerability in Microsoft .Net Framework, published on 16 May 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A denial of service vulnerability exists when .NET Framework or .NET Core improperly handle web requests, aka '.Net Framework and .Net Core Denial of Service Vulnerability'. This CVE ID is unique from CVE-2019-0820, CVE-2019-0980.
Weakness: CWE-19
Which versions are affected by CVE-2019-0981?
2 open source packages ship an affected version, including System.Private.Uri. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
System.Private.Uri NuGet | From 4.3.0 | 4.3.2 |
System.Private.Uri NuGet | From 4.3.0 | 4.3.2 |
Products include Microsoft .Net Core, Microsoft .Net Framework.
How do I fix CVE-2019-0981?
Upgrade System.Private.Uri to 4.3.2 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-0981 being exploited?
There is no known exploitation of CVE-2019-0981 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-5f2m-466j-3848.