CVE-2017-0247
Last modified
CVE-2017-0247 is a vulnerability of currently unknown severity. A denial of service vulnerability exists when the ASP.NET Core fails to properly validate web requests. NOTE: Microsoft has not commented on third-party claims that the issue is that the TextEncoder.EncodeCore function in the System.Text.Encodings.Web package in ASP.NET Core Mvc before 1.0.4 and 1.1.x before 1.1.3 allows remote attackers to cause a denial of service by leveraging failure to properly calculate the length of 4-byte characters in the Unicode Non-Character range.. EPSS estimates a 16.91% chance of exploitation in the next 30 days.
Description
A denial of service vulnerability exists when the ASP.NET Core fails to properly validate web requests. NOTE: Microsoft has not commented on third-party claims that the issue is that the TextEncoder.EncodeCore function in the System.Text.Encodings.Web package in ASP.NET Core Mvc before 1.0.4 and 1.1.x before 1.1.3 allows remote attackers to cause a denial of service by leveraging failure to properly calculate the length of 4-byte characters in the Unicode Non-Character range.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Asp.Net Model View Controller | 1.0.0 |
| Microsoft | Asp.Net Model View Controller | 1.0.1 |
| Microsoft | Asp.Net Model View Controller | 1.0.2 |
| Microsoft | Asp.Net Model View Controller | 1.0.3 |
| Microsoft | Asp.Net Model View Controller | 1.1.0 |
| Microsoft | Asp.Net Model View Controller | 1.1.1 |
| Microsoft | Asp.Net Model View Controller | 1.1.2 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Abstractions | 1.0.0 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Abstractions | 1.0.1 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Abstractions | 1.0.2 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Abstractions | 1.0.3 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Abstractions | 1.1.0 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Abstractions | 1.1.1 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Abstractions | 1.1.2 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Apiexplorer | 1.0.0 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Apiexplorer | 1.0.1 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Apiexplorer | 1.0.2 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Apiexplorer | 1.0.3 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Apiexplorer | 1.1.0 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Apiexplorer | 1.1.1 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Apiexplorer | 1.1.2 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Cors | 1.0.0 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Cors | 1.0.1 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Cors | 1.0.2 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Cors | 1.0.3 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Cors | 1.1.0 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Cors | 1.1.1 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Cors | 1.1.2 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Dataannotations | 1.0.0 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Dataannotations | 1.0.1 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Dataannotations | 1.0.2 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Dataannotations | 1.0.3 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Dataannotations | 1.1.0 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Dataannotations | 1.1.1 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Dataannotations | 1.1.2 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Formatters.Json | 1.0.0 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Formatters.Json | 1.0.1 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Formatters.Json | 1.0.2 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Formatters.Json | 1.0.3 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Formatters.Json | 1.1.0 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Formatters.Json | 1.1.1 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Formatters.Json | 1.1.2 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Formatters.Xml | 1.0.0 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Formatters.Xml | 1.0.1 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Formatters.Xml | 1.0.2 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Formatters.Xml | 1.0.3 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Formatters.Xml | 1.1.0 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Formatters.Xml | 1.1.1 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Formatters.Xml | 1.1.2 |
| Microsoft | Microsoft.Aspnetcore.Mvc.Localization | 1.0.0 |
Showing 50 of 101 affected configurations. See NVD for the full list.
References
- https://github.com/aspnet/Announcements/issues/239Technical Description, Third Party Advisory
- https://technet.microsoft.com/en-us/library/security/4021279.aspxPatch, Vendor Advisory
- https://www.sidertia.com/Home/Community/Blog/2017/05/18/ASPNET-Core-Unicode-Non-Char-Encoding-DoSExploit, Third Party Advisory
- https://github.com/aspnet/Announcements/issues/239Technical Description, Third Party Advisory
- https://technet.microsoft.com/en-us/library/security/4021279.aspxPatch, Vendor Advisory
- https://www.sidertia.com/Home/Community/Blog/2017/05/18/ASPNET-Core-Unicode-Non-Char-Encoding-DoSExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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