CVE-2017-0247

CVSS V2 Medium 5 CVSS V3 High 7.5
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.
Overview
  • CVE ID
  • CVE-2017-0247
  • Assigner
  • secure@microsoft.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2017-05-12T14:29:03
  • Last Modified Date
  • 2021-06-30T16:54:22
Weakness Enumerations
CWE URL
CWE-20 http://cwe.mitre.org/data/definitions/20.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:microsoft:asp.net_model_view_controller:1.0.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:asp.net_model_view_controller:1.0.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:asp.net_model_view_controller:1.0.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:asp.net_model_view_controller:1.0.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:asp.net_model_view_controller:1.1.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:asp.net_model_view_controller:1.1.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:asp.net_model_view_controller:1.1.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.0.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.0.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.0.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.0.3:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.1.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.1.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.1.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.0.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.0.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.0.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.0.3:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.1.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.1.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.1.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.0.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.0.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.0.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.0.3:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.1.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.1.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.1.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.0.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.0.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.0.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.0.3:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.1.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.1.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.1.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.0.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.0.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.0.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.0.3:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.1.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.1.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.1.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.xml:1.0.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.xml:1.0.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.xml:1.0.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.xml:1.0.3:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.xml:1.1.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.xml:1.1.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.xml:1.1.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.localization:1.0.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.localization:1.0.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.localization:1.0.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.localization:1.0.3:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.localization:1.1.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.localization:1.1.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.localization:1.1.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor:1.0.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor:1.0.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor:1.0.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor:1.0.3:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor:1.1.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor:1.1.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor:1.1.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor.host:1.0.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor.host:1.0.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor.host:1.0.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor.host:1.0.3:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor.host:1.1.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor.host:1.1.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.razor.host:1.1.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.taghelpers:1.0.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.taghelpers:1.0.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.taghelpers:1.0.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.taghelpers:1.0.3:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.taghelpers:1.1.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.taghelpers:1.1.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.taghelpers:1.1.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.viewfeatures:1.0.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.viewfeatures:1.0.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.viewfeatures:1.0.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.viewfeatures:1.0.3:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.viewfeatures:1.1.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.viewfeatures:1.1.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.viewfeatures:1.1.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.webapicompatshim:1.0.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.webapicompatshim:1.0.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.webapicompatshim:1.0.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.webapicompatshim:1.0.3:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.webapicompatshim:1.1.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.webapicompatshim:1.1.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.webapicompatshim:1.1.2:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:system.net.http:4.1.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:system.net.http:4.3.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:system.net.http.winhttphandler:4.0.1:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:system.net.http.winhttphandler:4.3.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:system.net.security:4.0.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:system.net.security:4.3.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:system.net.websockets.client:4.0.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:system.net.websockets.client:4.3.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:system.text.encodings.web:4.0.0:*:*:*:*:asp.net:*:* 1 OR
cpe:2.3:a:microsoft:system.text.encodings.web:4.3.0:*:*:*:*:asp.net:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:P/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://github.com/aspnet/Announcements/issues/239 Technical Description Third Party Advisory
https://www.sidertia.com/Home/Community/Blog/2017/05/18/ASPNET-Core-Unicode-Non-Char-Encoding-DoS Exploit Third Party Advisory
https://technet.microsoft.com/en-us/library/security/4021279.aspx Patch Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2017-0247
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0247
History
Created Old Value New Value Data Type Notes
2022-05-10 07:09:21 Added to TrackCVE
2022-12-02 16:49:36 2017-05-12T14:29Z 2017-05-12T14:29:03 CVE Published Date updated
2022-12-02 16:49:36 2021-06-30T16:54:22 CVE Modified Date updated
2022-12-02 16:49:36 Analyzed Vulnerability Status updated