{"id":"CVE-2017-11883","aliases":["EUVD-2022-3738","GHSA-f9jc-rrm2-pmfg"],"status":"published","title":"Denial of service in ASP.NET Core","description":".NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly handling web requests, aka \".NET CORE Denial Of Service Vulnerability\".","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.08526,"percentile":0.95084,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2017-11-15T03:00:00Z","modified":"2026-06-17T01:02:31Z","fixes":[{"ecosystem":"NuGet","package":"Microsoft.AspNetCore.Server.WebListener","fixed_in":["1.0.6","1.1.4"],"sources":["ghsa","osv"]},{"ecosystem":"NuGet","package":"Microsoft.Net.Http.Server","fixed_in":["1.0.6","1.1.4"],"sources":["ghsa","osv"]},{"ecosystem":"NuGet","package":"Microsoft.AspNetCore.Server.HttpSys","fixed_in":["2.0.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"NuGet","package":"Microsoft.AspNetCore.Server.WebListener","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"1.0.6"}]}]},{"source":"ghsa","ecosystem":"NuGet","package":"Microsoft.AspNetCore.Server.WebListener","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.1.0"},{"fixed":"1.1.4"}]}]},{"source":"ghsa","ecosystem":"NuGet","package":"Microsoft.Net.Http.Server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"1.0.6"}]}]},{"source":"ghsa","ecosystem":"NuGet","package":"Microsoft.Net.Http.Server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.1.0"},{"fixed":"1.1.4"}]}]},{"source":"ghsa","ecosystem":"NuGet","package":"Microsoft.AspNetCore.Server.HttpSys","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.0.2"}]}]},{"source":"osv","ecosystem":"NuGet","package":"Microsoft.AspNetCore.Server.WebListener","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"1.0.6"}]}],"versions":["1.0.0","1.0.1","1.0.2","1.0.3","1.0.4","1.0.5"]},{"source":"osv","ecosystem":"NuGet","package":"Microsoft.AspNetCore.Server.WebListener","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.1.0"},{"fixed":"1.1.4"}]}],"versions":["1.1.0","1.1.1","1.1.2","1.1.3"]},{"source":"osv","ecosystem":"NuGet","package":"Microsoft.Net.Http.Server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"1.0.6"}]}],"versions":["1.0.0","1.0.1","1.0.2","1.0.3","1.0.4","1.0.5"]},{"source":"osv","ecosystem":"NuGet","package":"Microsoft.Net.Http.Server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.1.0"},{"fixed":"1.1.4"}]}],"versions":["1.1.0","1.1.1","1.1.2","1.1.3"]},{"source":"osv","ecosystem":"NuGet","package":"Microsoft.AspNetCore.Server.HttpSys","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.0.2"}]}],"versions":["2.0.0","2.0.1"]}],"products":[{"vendor":"microsoft","product":"asp.net"},{"vendor":"microsoft","product":"aspnetcore"},{"vendor":"microsoft corporation","product":"asp.net"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11883","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","web"]},{"url":"http://www.securityfocus.com/bid/101835","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://www.securitytracker.com/id/1039793","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-11883","tags":["advisory"]},{"url":"https://github.com/aspnet/Announcements/issues/278","tags":["web"]},{"url":"https://github.com/github/advisory-database/issues/302","tags":["web"]},{"url":"https://github.com/advisories/GHSA-f9jc-rrm2-pmfg"}],"sources":{"cve":[{"id":"CVE-2017-11883","description":".NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly handling web requests, aka \".NET CORE Denial Of Service Vulnerability\".","status":"published","published":"2017-11-15T03:00:00Z","modified":"2024-09-16T23:06:51.531Z","updated_at":"2026-11-02T14:33:20.171335Z"}],"euvd":[{"id":"EUVD-2022-3738","description":".NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly handling web requests, aka \".NET CORE Denial Of Service Vulnerability\".","status":"published","published":"2017-11-15T03:00:00Z","modified":"2024-09-16T23:06:51Z","updated_at":"2026-11-03T00:54:56.209754Z"}],"ghsa":[{"id":"GHSA-f9jc-rrm2-pmfg","title":"Denial of service in ASP.NET Core","description":".NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly handling web requests, aka \".NET CORE Denial Of Service Vulnerability\".","status":"published","published":"2022-05-13T01:42:35Z","modified":"2023-01-27T05:02:33Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T14:36:18.427692Z"}],"nvd":[{"id":"CVE-2017-11883","description":".NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly handling web requests, aka \".NET CORE Denial Of Service Vulnerability\".","status":"published","published":"2017-11-15T03:29:01.953Z","modified":"2026-06-17T01:02:31.72Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:04:08.635428Z"}],"osv":[{"id":"GHSA-f9jc-rrm2-pmfg","title":"Denial of service in ASP.NET Core","description":".NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly handling web requests, aka \".NET CORE Denial Of Service Vulnerability\".","status":"published","published":"2022-05-13T01:42:35Z","modified":"2024-12-05T05:43:34.145995Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:46:46.39441Z"}]}}
