CVEvulnerability
CVE-2017-0247
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2017-05-12
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 7.5 HIGH — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:P/A:N
- Weaknesses
- CWE-20
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.
Affected configurations
• 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
• microsoft microsoft.aspnetcore.mvc.localization 1.0.1
• microsoft microsoft.aspnetcore.mvc.localization 1.0.2
• microsoft microsoft.aspnetcore.mvc.localization 1.0.3
• microsoft microsoft.aspnetcore.mvc.localization 1.1.0
• microsoft microsoft.aspnetcore.mvc.localization 1.1.1
• microsoft microsoft.aspnetcore.mvc.localization 1.1.2
• microsoft microsoft.aspnetcore.mvc.razor 1.0.0
• microsoft microsoft.aspnetcore.mvc.razor 1.0.1
• microsoft microsoft.aspnetcore.mvc.razor 1.0.2
• microsoft microsoft.aspnetcore.mvc.razor 1.0.3
… and 41 more
Related
Weakness · CWE (1)
- CWE-20 Improper Input Validation weakness
References
- https://github.com/aspnet/Announcements/issues/239 Technical Description, Third Party Advisory
- https://technet.microsoft.com/en-us/library/security/4021279.aspx Patch, Vendor Advisory
- https://www.sidertia.com/Home/Community/Blog/2017/05/18/ASPNET-Core-Unicode-Non-Char-Encoding-DoS Exploit, Third Party Advisory
- https://github.com/aspnet/Announcements/issues/239 Technical Description, Third Party Advisory
- https://technet.microsoft.com/en-us/library/security/4021279.aspx Patch, Vendor Advisory
- https://www.sidertia.com/Home/Community/Blog/2017/05/18/ASPNET-Core-Unicode-Non-Char-Encoding-DoS Exploit, Third Party Advisory