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cve-2021-31957
Vulnerability from cvelistv5
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"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VMAO4NG2OQ4PCXUQWMNSCMYWLIJJY6UY/" }, { "name": "FEDORA-2021-e9c84e6d26", "tags": [ "vendor-advisory", "x_refsource_FEDORA", "x_transferred" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVCDYIP4A6DDRT7G6P3ZW6PKNK2DNWJ2/" } ], "title": "CVE Program Container" } ], "cna": { "affected": [ { "cpes": [ "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*" ], "platforms": [ "Unknown" ], "product": "Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)", "vendor": "Microsoft", "versions": [ { "lessThan": "16.4.23", "status": "affected", "version": "16.0", "versionType": "custom" } ] }, { "cpes": [ "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*" ], "platforms": [ "Unknown" ], "product": "Microsoft Visual Studio 2019 version 16.7 (includes 16.0 \u2013 16.6)", "vendor": "Microsoft", "versions": [ { "lessThan": 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Advisory\"]}]}}" } }
rhsa-2021_2351
Vulnerability from csaf_redhat
Notes
{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "An update for rh-dotnet50-dotnet is now available for .NET on Red Hat Enterprise Linux.\n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.", "title": "Topic" }, { "category": "general", "text": ".NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.\n\nNew versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 5.0.204 and .NET Runtime 5.0.7.\n\nSecurity Fix(es):\n\n* dotnet: ASP.NET Core Client Disconnect Denial of Service (CVE-2021-31957)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.", "title": "Details" }, { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2021:2351", "url": "https://access.redhat.com/errata/RHSA-2021:2351" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#important", "url": "https://access.redhat.com/security/updates/classification/#important" }, { "category": "external", "summary": "1966990", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1966990" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_2351.json" } ], "title": "Red Hat Security Advisory: .NET 5.0 on RHEL 7 security and bugfix update", "tracking": { "current_release_date": "2024-11-05T23:40:32+00:00", "generator": { "date": "2024-11-05T23:40:32+00:00", "engine": { "name": "Red Hat SDEngine", "version": "4.1.1" } }, "id": "RHSA-2021:2351", "initial_release_date": "2021-06-09T01:43:31+00:00", "revision_history": [ { "date": "2021-06-09T01:43:31+00:00", "number": "1", "summary": "Initial version" }, { "date": "2021-06-09T01:43:31+00:00", "number": "2", "summary": "Last updated version" }, { "date": "2024-11-05T23:40:32+00:00", "number": "3", "summary": "Last generated version" } ], "status": "final", "version": "3" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": ".NET Core on Red Hat Enterprise Linux ComputeNode (v. 7)", "product": { "name": ".NET Core on Red Hat Enterprise Linux ComputeNode (v. 7)", "product_id": "7ComputeNode-dotNET-5.0", "product_identification_helper": { "cpe": "cpe:/a:redhat:rhel_dotnet:5.0::el7" } } }, { "category": "product_name", "name": ".NET Core on Red Hat Enterprise Linux Server (v. 7)", "product": { "name": ".NET Core on Red Hat Enterprise Linux Server (v. 7)", "product_id": "7Server-dotNET-5.0", "product_identification_helper": { "cpe": "cpe:/a:redhat:rhel_dotnet:5.0::el7" } } }, { "category": "product_name", "name": ".NET Core on Red Hat Enterprise Linux Workstation (v. 7)", "product": { "name": ".NET Core on Red Hat Enterprise Linux Workstation (v. 7)", "product_id": "7Workstation-dotNET-5.0", "product_identification_helper": { "cpe": "cpe:/a:redhat:rhel_dotnet:5.0::el7" } } } ], "category": "product_family", "name": ".NET Core on Red Hat Enterprise Linux" }, { "branches": [ { "category": "product_version", "name": "rh-dotnet50-aspnetcore-runtime-5.0-0:5.0.7-1.el7_9.x86_64", "product": { "name": 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The way client disconnects are handled can allow a remote, unauthenticated attacker to exploit this vulnerability to cause a denial of service against an ASP.NET Core application. The highest threat from this vulnerability is to system availability.", "title": "Vulnerability description" }, { "category": "summary", "text": "dotnet: ASP.NET Core Client Disconnect Denial of Service", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "7ComputeNode-dotNET-5.0:rh-dotnet50-aspnetcore-runtime-5.0-0:5.0.7-1.el7_9.x86_64", "7ComputeNode-dotNET-5.0:rh-dotnet50-aspnetcore-targeting-pack-5.0-0:5.0.7-1.el7_9.x86_64", "7ComputeNode-dotNET-5.0:rh-dotnet50-dotnet-0:5.0.204-1.el7_9.src", "7ComputeNode-dotNET-5.0:rh-dotnet50-dotnet-0:5.0.204-1.el7_9.x86_64", "7ComputeNode-dotNET-5.0:rh-dotnet50-dotnet-apphost-pack-5.0-0:5.0.7-1.el7_9.x86_64", 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"RHBZ#1966990", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1966990" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2021-31957", "url": "https://www.cve.org/CVERecord?id=CVE-2021-31957" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-31957", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-31957" }, { "category": "external", "summary": "https://github.com/dotnet/announcements/issues/189", "url": "https://github.com/dotnet/announcements/issues/189" }, { "category": "external", "summary": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-31957", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-31957" } ], "release_date": "2021-06-08T17:35:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2021-06-09T01:43:31+00:00", "details": "For details on how to apply this update, which includes the changes described in this advisory, refer 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"7Workstation-dotNET-5.0:rh-dotnet50-netstandard-targeting-pack-2.1-0:5.0.204-1.el7_9.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Important" } ], "title": "dotnet: ASP.NET Core Client Disconnect Denial of Service" } ] }
rhsa-2021_2353
Vulnerability from csaf_redhat
Notes
{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "An update for .NET 5.0 is now available for Red Hat Enterprise Linux 8.\n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.", "title": "Topic" }, { "category": "general", "text": ".NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.\n\nNew versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 5.0.204 and .NET Runtime 5.0.7.\n\nSecurity Fix(es):\n\n* dotnet: ASP.NET Core Client Disconnect Denial of Service (CVE-2021-31957)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.", "title": "Details" }, { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2021:2353", "url": "https://access.redhat.com/errata/RHSA-2021:2353" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#important", "url": "https://access.redhat.com/security/updates/classification/#important" }, { "category": "external", "summary": "1966990", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1966990" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_2353.json" } ], "title": "Red Hat Security Advisory: .NET 5.0 security and bugfix update", "tracking": { "current_release_date": "2024-11-05T23:41:01+00:00", "generator": { "date": "2024-11-05T23:41:01+00:00", "engine": { "name": "Red Hat SDEngine", "version": "4.1.1" } }, "id": "RHSA-2021:2353", "initial_release_date": "2021-06-09T00:57:23+00:00", "revision_history": [ { "date": "2021-06-09T00:57:23+00:00", "number": "1", "summary": "Initial version" }, { "date": "2021-06-09T00:57:23+00:00", "number": "2", "summary": "Last updated version" }, { "date": "2024-11-05T23:41:01+00:00", "number": "3", "summary": "Last generated version" } ], "status": "final", "version": "3" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Red Hat Enterprise Linux AppStream (v. 8)", "product": { "name": "Red Hat Enterprise Linux AppStream (v. 8)", "product_id": 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dotnet. The way client disconnects are handled can allow a remote, unauthenticated attacker to exploit this vulnerability to cause a denial of service against an ASP.NET Core application. The highest threat from this vulnerability is to system availability.", "title": "Vulnerability description" }, { "category": "summary", "text": "dotnet: ASP.NET Core Client Disconnect Denial of Service", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "AppStream-8.4.0.Z.MAIN.EUS:aspnetcore-runtime-5.0-0:5.0.7-1.el8_4.x86_64", "AppStream-8.4.0.Z.MAIN.EUS:aspnetcore-targeting-pack-5.0-0:5.0.7-1.el8_4.x86_64", "AppStream-8.4.0.Z.MAIN.EUS:dotnet-0:5.0.204-1.el8_4.x86_64", "AppStream-8.4.0.Z.MAIN.EUS:dotnet-apphost-pack-5.0-0:5.0.7-1.el8_4.x86_64", "AppStream-8.4.0.Z.MAIN.EUS:dotnet-apphost-pack-5.0-debuginfo-0:5.0.7-1.el8_4.x86_64", "AppStream-8.4.0.Z.MAIN.EUS:dotnet-host-0:5.0.7-1.el8_4.x86_64", 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"references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2021-31957" }, { "category": "external", "summary": "RHBZ#1966990", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1966990" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2021-31957", "url": "https://www.cve.org/CVERecord?id=CVE-2021-31957" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-31957", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-31957" }, { "category": "external", "summary": "https://github.com/dotnet/announcements/issues/189", "url": "https://github.com/dotnet/announcements/issues/189" }, { "category": "external", "summary": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-31957", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-31957" } ], "release_date": "2021-06-08T17:35:00+00:00", "remediations": [ { "category": "vendor_fix", "date": 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"integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "products": [ "AppStream-8.4.0.Z.MAIN.EUS:aspnetcore-runtime-5.0-0:5.0.7-1.el8_4.x86_64", "AppStream-8.4.0.Z.MAIN.EUS:aspnetcore-targeting-pack-5.0-0:5.0.7-1.el8_4.x86_64", "AppStream-8.4.0.Z.MAIN.EUS:dotnet-0:5.0.204-1.el8_4.x86_64", "AppStream-8.4.0.Z.MAIN.EUS:dotnet-apphost-pack-5.0-0:5.0.7-1.el8_4.x86_64", "AppStream-8.4.0.Z.MAIN.EUS:dotnet-apphost-pack-5.0-debuginfo-0:5.0.7-1.el8_4.x86_64", "AppStream-8.4.0.Z.MAIN.EUS:dotnet-host-0:5.0.7-1.el8_4.x86_64", "AppStream-8.4.0.Z.MAIN.EUS:dotnet-host-debuginfo-0:5.0.7-1.el8_4.x86_64", "AppStream-8.4.0.Z.MAIN.EUS:dotnet-hostfxr-5.0-0:5.0.7-1.el8_4.x86_64", "AppStream-8.4.0.Z.MAIN.EUS:dotnet-hostfxr-5.0-debuginfo-0:5.0.7-1.el8_4.x86_64", "AppStream-8.4.0.Z.MAIN.EUS:dotnet-runtime-5.0-0:5.0.7-1.el8_4.x86_64", 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rhsa-2021_2352
Vulnerability from csaf_redhat
Notes
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It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.\n\nNew versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 3.1.116 and .NET Runtime 3.1.16.\n\nSecurity Fix(es):\n\n* dotnet: ASP.NET Core Client Disconnect Denial of Service (CVE-2021-31957)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.", "title": "Details" }, { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). 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"system_name": "Red Hat Bugzilla ID", "text": "1966990" } ], "notes": [ { "category": "description", "text": "A flaw was found in dotnet. The way client disconnects are handled can allow a remote, unauthenticated attacker to exploit this vulnerability to cause a denial of service against an ASP.NET Core application. 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rhsa-2021_2350
Vulnerability from csaf_redhat
Notes
{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "An update for rh-dotnet31-dotnet is now available for .NET Core on Red Hat Enterprise Linux.\n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.", "title": "Topic" }, { "category": "general", "text": ".NET is a managed-software framework. 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The way client disconnects are handled can allow a remote, unauthenticated attacker to exploit this vulnerability to cause a denial of service against an ASP.NET Core application. The highest threat from this vulnerability is to system availability.", "title": "Vulnerability description" }, { "category": "summary", "text": "dotnet: ASP.NET Core Client Disconnect Denial of Service", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "7ComputeNode-dotNET-3.1:rh-dotnet31-aspnetcore-runtime-3.1-0:3.1.16-1.el7_9.x86_64", "7ComputeNode-dotNET-3.1:rh-dotnet31-aspnetcore-targeting-pack-3.1-0:3.1.16-1.el7_9.x86_64", "7ComputeNode-dotNET-3.1:rh-dotnet31-dotnet-0:3.1.116-1.el7_9.src", "7ComputeNode-dotNET-3.1:rh-dotnet31-dotnet-0:3.1.116-1.el7_9.x86_64", "7ComputeNode-dotNET-3.1:rh-dotnet31-dotnet-apphost-pack-3.1-0:3.1.16-1.el7_9.x86_64", 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"7Workstation-dotNET-3.1:rh-dotnet31-dotnet-sdk-3.1-0:3.1.116-1.el7_9.x86_64", "7Workstation-dotNET-3.1:rh-dotnet31-dotnet-targeting-pack-3.1-0:3.1.16-1.el7_9.x86_64", "7Workstation-dotNET-3.1:rh-dotnet31-dotnet-templates-3.1-0:3.1.116-1.el7_9.x86_64", "7Workstation-dotNET-3.1:rh-dotnet31-netstandard-targeting-pack-2.1-0:3.1.116-1.el7_9.x86_64" ], "restart_required": { "category": "none" }, "url": "https://access.redhat.com/errata/RHSA-2021:2350" } ], "scores": [ { "cvss_v3": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "products": [ "7ComputeNode-dotNET-3.1:rh-dotnet31-aspnetcore-runtime-3.1-0:3.1.16-1.el7_9.x86_64", 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"7Workstation-dotNET-3.1:rh-dotnet31-dotnet-templates-3.1-0:3.1.116-1.el7_9.x86_64", "7Workstation-dotNET-3.1:rh-dotnet31-netstandard-targeting-pack-2.1-0:3.1.116-1.el7_9.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Important" } ], "title": "dotnet: ASP.NET Core Client Disconnect Denial of Service" } ] }
ghsa-mcwm-2wmc-6hv4
Vulnerability from github
Withdrawn
This advisory was initially published and mapped incorrectly to nuget Microsoft.NETCore.App.Ref
. We later reanalyzed this advisory and found it does not have a direct mapping to a NuGet package. Thus we have withdrawn this advisory.
The underlying ASP.NET Core Denial of Service Vulnerability and CVE-2021-31957 remain legitimate.
Description.
Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 5.0 and .NET Core 3.1. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.
A denial of service vulnerability exists when ASP.NET Core improperly handles client disconnect. An attacker who successfully exploited this vulnerability could cause a denial of service against an ASP.NET Core web application. The vulnerability can be exploited remotely, without authentication.
Patches
-
If you're using .NET 5.0, you should download and install Runtime 5.0.7 or SDK 5.0.204 (for Visual Studio 2019 v16.8) or SDK 5.0.301 (for Visual Studio 2019 16.10) from https://dotnet.microsoft.com/download/dotnet-core/5.0.
-
If you're using .NET Core 3.1, you should download and install Runtime 3.1.16 or SDK 3.1.116 (for Visual Studio 2019 v16.4) or 3.1.410 (for Visual Studio 2019 v16.5 or later) from https://dotnet.microsoft.com/download/dotnet-core/3.1.
Other Details
- Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/188
- An Issue for this can be found at https://github.com/dotnet/aspnetcore/issues/33369
- MSRC details for this can be found at https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-31957
{ "affected": [ { "package": { "ecosystem": "NuGet", "name": "Microsoft.NETCore.App.Ref" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "3.1.16" } ], "type": "ECOSYSTEM" } ] }, { "package": { "ecosystem": "NuGet", "name": "Microsoft.NETCore.App.Ref" }, "ranges": [ { "events": [ { "introduced": "5.0.0" }, { "fixed": "5.0.7" } ], "type": "ECOSYSTEM" } ] } ], "aliases": [ "CVE-2021-31957" ], "database_specific": { "cwe_ids": [], "github_reviewed": true, "github_reviewed_at": "2021-10-05T19:41:18Z", "nvd_published_at": "2021-06-08T23:15:00Z", "severity": "HIGH" }, "details": "# Withdrawn\n\nThis advisory was initially published and mapped incorrectly to nuget `Microsoft.NETCore.App.Ref`. We later reanalyzed this advisory and found it does not have a direct mapping to a NuGet package. Thus we have withdrawn this advisory.\n\nThe underlying ASP.NET Core Denial of Service Vulnerability and CVE-2021-31957 remain legitimate.\n\n# Description.\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET 5.0 and .NET Core 3.1. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nA denial of service vulnerability exists when ASP.NET Core improperly handles client disconnect. An attacker who successfully exploited this vulnerability could cause a denial of service against an ASP.NET Core web application. The vulnerability can be exploited remotely, without authentication.\n\n\n### Patches\n\n* If you\u0027re using .NET 5.0, you should download and install Runtime 5.0.7 or SDK 5.0.204 (for Visual Studio 2019 v16.8) or SDK 5.0.301 (for Visual Studio 2019 16.10) from https://dotnet.microsoft.com/download/dotnet-core/5.0.\n\n* If you\u0027re using .NET Core 3.1, you should download and install Runtime 3.1.16 or SDK 3.1.116 (for Visual Studio 2019 v16.4) or 3.1.410 (for Visual Studio 2019 v16.5 or later) from https://dotnet.microsoft.com/download/dotnet-core/3.1.\n\n\n\n#### Other Details\n\n- Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/188\n- An Issue for this can be found at https://github.com/dotnet/aspnetcore/issues/33369\n- MSRC details for this can be found at https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-31957\n", "id": "GHSA-mcwm-2wmc-6hv4", "modified": "2021-10-06T00:23:01Z", "published": "2021-10-06T00:23:01Z", "references": [ { "type": "WEB", "url": "https://github.com/dotnet/aspnetcore/security/advisories/GHSA-mcwm-2wmc-6hv4" }, { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-31957" }, { "type": "PACKAGE", "url": "https://github.com/dotnet/aspnetcore" }, { "type": "WEB", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4PRVVLXXQEF4SEJOBV3VRJHGX7YHY2CG" }, { "type": "WEB", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CVCDYIP4A6DDRT7G6P3ZW6PKNK2DNWJ2" }, { "type": "WEB", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PMHWHRRYDHKM6BIINW5V7OCSW4SDWB4W" }, { "type": "WEB", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VMAO4NG2OQ4PCXUQWMNSCMYWLIJJY6UY" }, { "type": "WEB", "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31957" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "type": "CVSS_V3" } ], "summary": "ASP.NET Core Denial of Service Vulnerability", "withdrawn": "2021-10-06T00:23:01Z" }
var-202106-1709
Vulnerability from variot
ASP.NET Core Denial of Service Vulnerability. .NET and Microsoft Visual Studio Has ASP.NET Service operation is interrupted due to a defect in (DoS) A vulnerability exists.Denial of service (DoS) It may be put into a state. Pillow is a Python-based image processing library. There is currently no information about this vulnerability, please feel free to follow CNNVD or manufacturer announcements. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
====================================================================
Red Hat Security Advisory
Synopsis: Important: .NET Core 3.1 on RHEL 7 security and bugfix update Advisory ID: RHSA-2021:2350-01 Product: .NET Core on Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:2350 Issue date: 2021-06-08 CVE Names: CVE-2021-31957 ==================================================================== 1. Summary:
An update for rh-dotnet31-dotnet is now available for .NET Core on Red Hat Enterprise Linux.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
- Relevant releases/architectures:
.NET Core on Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 .NET Core on Red Hat Enterprise Linux Server (v. 7) - x86_64 .NET Core on Red Hat Enterprise Linux Workstation (v. 7) - x86_64
- Description:
.NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.
New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 3.1.116 and .NET Runtime 3.1.16.
Security Fix(es):
- dotnet: ASP.NET Core Client Disconnect Denial of Service (CVE-2021-31957)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
- Solution:
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
- Package List:
.NET Core on Red Hat Enterprise Linux ComputeNode (v. 7):
Source: rh-dotnet31-dotnet-3.1.116-1.el7_9.src.rpm
x86_64: rh-dotnet31-aspnetcore-runtime-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-aspnetcore-targeting-pack-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-3.1.116-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-apphost-pack-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-debuginfo-3.1.116-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-host-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-hostfxr-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-runtime-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-sdk-3.1-3.1.116-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-targeting-pack-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-templates-3.1-3.1.116-1.el7_9.x86_64.rpm rh-dotnet31-netstandard-targeting-pack-2.1-3.1.116-1.el7_9.x86_64.rpm
.NET Core on Red Hat Enterprise Linux Server (v. 7):
Source: rh-dotnet31-dotnet-3.1.116-1.el7_9.src.rpm
x86_64: rh-dotnet31-aspnetcore-runtime-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-aspnetcore-targeting-pack-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-3.1.116-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-apphost-pack-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-debuginfo-3.1.116-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-host-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-hostfxr-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-runtime-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-sdk-3.1-3.1.116-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-targeting-pack-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-templates-3.1-3.1.116-1.el7_9.x86_64.rpm rh-dotnet31-netstandard-targeting-pack-2.1-3.1.116-1.el7_9.x86_64.rpm
.NET Core on Red Hat Enterprise Linux Workstation (v. 7):
Source: rh-dotnet31-dotnet-3.1.116-1.el7_9.src.rpm
x86_64: rh-dotnet31-aspnetcore-runtime-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-aspnetcore-targeting-pack-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-3.1.116-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-apphost-pack-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-debuginfo-3.1.116-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-host-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-hostfxr-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-runtime-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-sdk-3.1-3.1.116-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-targeting-pack-3.1-3.1.16-1.el7_9.x86_64.rpm rh-dotnet31-dotnet-templates-3.1-3.1.116-1.el7_9.x86_64.rpm rh-dotnet31-netstandard-targeting-pack-2.1-3.1.116-1.el7_9.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/
- References:
https://access.redhat.com/security/cve/CVE-2021-31957 https://access.redhat.com/security/updates/classification/#important
- Contact:
The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/
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-- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce
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Pillow is a Python-based image processing library. \nThere is currently no information about this vulnerability, please feel free to follow CNNVD or manufacturer announcements. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA256\n\n==================================================================== \nRed Hat Security Advisory\n\nSynopsis: Important: .NET Core 3.1 on RHEL 7 security and bugfix update\nAdvisory ID: RHSA-2021:2350-01\nProduct: .NET Core on Red Hat Enterprise Linux\nAdvisory URL: https://access.redhat.com/errata/RHSA-2021:2350\nIssue date: 2021-06-08\nCVE Names: CVE-2021-31957\n====================================================================\n1. Summary:\n\nAn update for rh-dotnet31-dotnet is now available for .NET Core on Red Hat\nEnterprise Linux. \n\nRed Hat Product Security has rated this update as having a security impact\nof Important. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available for each vulnerability\nfrom the CVE link(s) in the References section. \n\n2. Relevant releases/architectures:\n\n.NET Core on Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64\n.NET Core on Red Hat Enterprise Linux Server (v. 7) - x86_64\n.NET Core on Red Hat Enterprise Linux Workstation (v. 7) - x86_64\n\n3. Description:\n\n.NET is a managed-software framework. It implements a subset of the .NET\nframework APIs and several new APIs, and it includes a CLR implementation. \n\nNew versions of .NET that address a security vulnerability are now\navailable. The updated versions are .NET SDK 3.1.116 and .NET Runtime\n3.1.16. \n\nSecurity Fix(es):\n\n* dotnet: ASP.NET Core Client Disconnect Denial of Service (CVE-2021-31957)\n\nFor more details about the security issue(s), including the impact, a CVSS\nscore, acknowledgments, and other related information, refer to the CVE\npage(s) listed in the References section. \n\n4. Solution:\n\nFor details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\n5. Package List:\n\n.NET Core on Red Hat Enterprise Linux ComputeNode (v. 7):\n\nSource:\nrh-dotnet31-dotnet-3.1.116-1.el7_9.src.rpm\n\nx86_64:\nrh-dotnet31-aspnetcore-runtime-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-aspnetcore-targeting-pack-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-3.1.116-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-apphost-pack-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-debuginfo-3.1.116-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-host-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-hostfxr-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-runtime-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-sdk-3.1-3.1.116-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-targeting-pack-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-templates-3.1-3.1.116-1.el7_9.x86_64.rpm\nrh-dotnet31-netstandard-targeting-pack-2.1-3.1.116-1.el7_9.x86_64.rpm\n\n.NET Core on Red Hat Enterprise Linux Server (v. 7):\n\nSource:\nrh-dotnet31-dotnet-3.1.116-1.el7_9.src.rpm\n\nx86_64:\nrh-dotnet31-aspnetcore-runtime-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-aspnetcore-targeting-pack-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-3.1.116-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-apphost-pack-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-debuginfo-3.1.116-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-host-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-hostfxr-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-runtime-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-sdk-3.1-3.1.116-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-targeting-pack-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-templates-3.1-3.1.116-1.el7_9.x86_64.rpm\nrh-dotnet31-netstandard-targeting-pack-2.1-3.1.116-1.el7_9.x86_64.rpm\n\n.NET Core on Red Hat Enterprise Linux Workstation (v. 7):\n\nSource:\nrh-dotnet31-dotnet-3.1.116-1.el7_9.src.rpm\n\nx86_64:\nrh-dotnet31-aspnetcore-runtime-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-aspnetcore-targeting-pack-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-3.1.116-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-apphost-pack-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-debuginfo-3.1.116-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-host-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-hostfxr-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-runtime-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-sdk-3.1-3.1.116-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-targeting-pack-3.1-3.1.16-1.el7_9.x86_64.rpm\nrh-dotnet31-dotnet-templates-3.1-3.1.116-1.el7_9.x86_64.rpm\nrh-dotnet31-netstandard-targeting-pack-2.1-3.1.116-1.el7_9.x86_64.rpm\n\nThese packages are GPG signed by Red Hat for security. Our key and\ndetails on how to verify the signature are available from\nhttps://access.redhat.com/security/team/key/\n\n7. References:\n\nhttps://access.redhat.com/security/cve/CVE-2021-31957\nhttps://access.redhat.com/security/updates/classification/#important\n\n8. Contact:\n\nThe Red Hat security contact is \u003csecalert@redhat.com\u003e. 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gsd-2021-31957
Vulnerability from gsd
{ "GSD": { "alias": "CVE-2021-31957", "description": "ASP.NET Denial of Service Vulnerability", "id": "GSD-2021-31957", "references": [ "https://access.redhat.com/errata/RHSA-2021:2353", "https://access.redhat.com/errata/RHSA-2021:2352", "https://access.redhat.com/errata/RHSA-2021:2351", "https://access.redhat.com/errata/RHSA-2021:2350", "https://security.archlinux.org/CVE-2021-31957", "https://linux.oracle.com/cve/CVE-2021-31957.html" ] }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2021-31957" ], "details": "ASP.NET Denial of Service Vulnerability", "id": "GSD-2021-31957", "modified": "2023-12-13T01:23:13.717901Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "secure@microsoft.com", "ID": "CVE-2021-31957", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { 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"cvssV3": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "exploitabilityScore": 2.2, "impactScore": 3.6 } }, "lastModifiedDate": "2023-08-01T23:15Z", "publishedDate": "2021-06-08T23:15Z" } } }
Sightings
Author | Source | Type | Date |
---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.