Vulnerability Details : CVE-2017-0247
Potential exploit
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.
Vulnerability category: Input validationDenial of service
Products affected by CVE-2017-0247
- cpe:2.3:a:microsoft:asp.net_model_view_controller:1.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:asp.net_model_view_controller:1.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:asp.net_model_view_controller:1.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:asp.net_model_view_controller:1.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:asp.net_model_view_controller:1.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:asp.net_model_view_controller:1.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:asp.net_model_view_controller:1.0.3:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.0.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.0.3:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.1.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.1.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.0.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.1.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.0.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.1.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.0.3:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.1.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.0.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.0.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.1.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.0.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.0.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.1.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.0.3:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.1.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.1.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.0.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.0.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.0.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.0.3:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.1.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.1.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.0.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.1.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.0.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.0.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.0.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.0.3:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.1.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.1.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.0.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.1.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.xml:1.1.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.xml:1.1.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.xml:1.0.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.xml:1.1.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.xml:1.0.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.xml:1.0.3:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.xml:1.0.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.localization:1.0.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.localization:1.0.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.localization:1.0.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.localization:1.1.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.localization:1.1.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.localization:1.0.3:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.localization:1.1.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor:1.1.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor:1.0.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor:1.0.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor:1.0.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor:1.1.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor:1.1.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor:1.0.3:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor.host:1.0.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor.host:1.0.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor.host:1.0.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor.host:1.0.3:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor.host:1.1.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor.host:1.1.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor.host:1.1.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.taghelpers:1.0.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.taghelpers:1.1.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.taghelpers:1.0.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.taghelpers:1.0.3:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.taghelpers:1.1.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.taghelpers:1.1.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.taghelpers:1.0.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.viewfeatures:1.0.3:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.viewfeatures:1.1.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.viewfeatures:1.1.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.viewfeatures:1.0.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.viewfeatures:1.0.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.viewfeatures:1.1.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.viewfeatures:1.0.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.webapicompatshim:1.0.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.webapicompatshim:1.1.2:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.webapicompatshim:1.1.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.webapicompatshim:1.1.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.webapicompatshim:1.0.3:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.webapicompatshim:1.0.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.webapicompatshim:1.0.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:system.net.http:4.1.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:system.net.http:4.3.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:system.net.http.winhttphandler:4.3.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:system.net.http.winhttphandler:4.0.1:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:system.net.security:4.3.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:system.net.security:4.0.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:system.net.websockets.client:4.3.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:system.net.websockets.client:4.0.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:system.text.encodings.web:4.0.0:*:*:*:*:asp.net:*:*
- cpe:2.3:a:microsoft:system.text.encodings.web:4.3.0:*:*:*:*:asp.net:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-0247
11.12%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 93 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-0247
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:N |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2017-0247
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-0247
-
https://github.com/aspnet/Announcements/issues/239
Microsoft Security Advisory 4021279: Vulnerabilities in .NET Core, ASP.NET Core Could Allow Elevation of Privilege · Issue #239 · aspnet/Announcements · GitHubTechnical Description;Third Party Advisory
-
https://technet.microsoft.com/en-us/library/security/4021279.aspx
MSRC - Microsoft Security Response CenterPatch;Vendor Advisory
-
https://www.sidertia.com/Home/Community/Blog/2017/05/18/ASPNET-Core-Unicode-Non-Char-Encoding-DoS
ASPNET Core Unicode Non-Char Encoding DoSExploit;Third Party Advisory
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