{"id":"CVE-2017-0247","aliases":[],"url":"https://o3.security/vulnerability/CVE-2017-0247","summary":"ASP.NET Core fails to properly validate web requests","details":"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.","published":"2018-10-16T19:58:05Z","modified":"2023-11-08T03:58:40.064574Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc","fixedVersion":"1.0.4"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc","fixedVersion":"1.1.3"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.Core","fixedVersion":"1.0.4"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.Core","fixedVersion":"1.1.3"},{"ecosystem":"NuGet","name":"System.Net.Http","fixedVersion":"4.1.2"},{"ecosystem":"NuGet","name":"System.Net.Http","fixedVersion":"4.3.2"},{"ecosystem":"NuGet","name":"System.Text.Encodings.Web","fixedVersion":"4.0.1"},{"ecosystem":"NuGet","name":"System.Text.Encodings.Web","fixedVersion":"4.3.1"},{"ecosystem":"NuGet","name":"System.Net.Http.WinHttpHandler","fixedVersion":"4.0.1"},{"ecosystem":"NuGet","name":"System.Net.Http.WinHttpHandler","fixedVersion":"4.5.4"},{"ecosystem":"NuGet","name":"System.Net.Security","fixedVersion":"4.0.1"},{"ecosystem":"NuGet","name":"System.Net.Security","fixedVersion":"4.3.1"},{"ecosystem":"NuGet","name":"System.Net.WebSockets.Client","fixedVersion":"4.0.1"},{"ecosystem":"NuGet","name":"System.Net.WebSockets.Client","fixedVersion":"4.3.1"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.Abstractions","fixedVersion":"1.0.4"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.Abstractions","fixedVersion":"1.1.3"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.ApiExplorer","fixedVersion":"1.0.4"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.ApiExplorer","fixedVersion":"1.1.3"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.Cors","fixedVersion":"1.0.4"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.Cors","fixedVersion":"1.1.3"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.DataAnnotations","fixedVersion":"1.0.4"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.DataAnnotations","fixedVersion":"1.1.3"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.Formatters.Json","fixedVersion":"1.0.4"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.Formatters.Json","fixedVersion":"1.1.3"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.Formatters.Xml","fixedVersion":"1.0.4"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.Formatters.Xml","fixedVersion":"1.1.3"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.Localization","fixedVersion":"1.0.4"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.Localization","fixedVersion":"1.1.3"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.Razor.Host","fixedVersion":"1.0.4"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.Razor.Host","fixedVersion":"1.1.3"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.Razor","fixedVersion":"1.0.4"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.Razor","fixedVersion":"1.1.3"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.TagHelpers","fixedVersion":"1.0.4"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.TagHelpers","fixedVersion":"1.1.3"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.ViewFeatures","fixedVersion":"1.0.4"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.ViewFeatures","fixedVersion":"1.1.3"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.WebApiCompatShim","fixedVersion":"1.0.4"},{"ecosystem":"NuGet","name":"Microsoft.AspNetCore.Mvc.WebApiCompatShim","fixedVersion":"1.1.3"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-0247"},{"type":"WEB","url":"https://github.com/aspnet/Announcements/issues/239"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-6xh7-4v2w-36q6"},{"type":"WEB","url":"https://technet.microsoft.com/en-us/library/security/4021279.aspx"},{"type":"WEB","url":"https://www.sidertia.com/Home/Community/Blog/2017/05/18/ASPNET-Core-Unicode-Non-Char-Encoding-DoS"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2023-11-08T03:58:40.064574Z"}}