Vulnerability-Lookup

VAR-202101-1406

Vulnerability from variot - Updated: 2024-01-03 13:38

ASP.NET Core and Visual Studio Denial of Service Vulnerability. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256

===================================================================== Red Hat Security Advisory

Synopsis: Important: .NET 5.0 on Red Hat Enterprise Linux security and bugfix update Advisory ID: RHSA-2021:0096-01 Product: .NET Core on Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0096 Issue date: 2021-01-13 CVE Names: CVE-2021-1723 =====================================================================

Summary:

An update for rh-dotnet50-dotnet is now available for .NET 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 5.0.102 and .NET Runtime 5.0.2.

Security Fix(es):

dotnet: ASP.NET Core Callbacks outside of locks cause Krestel deadlock when using HTTP2 (CVE-2021-1723)

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

Bugs fixed (https://bugzilla.redhat.com/):

1914258 - CVE-2021-1723 dotnet: ASP.NET Core Callbacks outside of locks cause Krestel deadlock when using HTTP2

Package List:

.NET Core on Red Hat Enterprise Linux ComputeNode (v. 7):

Source: rh-dotnet50-dotnet-5.0.102-1.el7_9.src.rpm

x86_64: rh-dotnet50-aspnetcore-runtime-5.0-5.0.2-1.el7_9.x86_64.rpm rh-dotnet50-aspnetcore-targeting-pack-5.0-5.0.2-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-5.0.102-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-apphost-pack-5.0-5.0.2-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-debuginfo-5.0.102-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-host-5.0.2-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-hostfxr-5.0-5.0.2-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-runtime-5.0-5.0.2-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-sdk-5.0-5.0.102-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-targeting-pack-5.0-5.0.2-1.el7_9.x86_64.rpm rh-dotnet50-dotnet-templates-5.0-5.0.102-1.el7_9.x86_64.rpm rh-dotnet50-netstandard-targeting-pack-2.1-5.0.102-1.el7_9.x86_64.rpm

.NET Core on Red Hat Enterprise Linux Server (v. 7):

Source: rh-dotnet50-dotnet-5.0.102-1.el7_9.src.rpm

.NET Core on Red Hat Enterprise Linux Workstation (v. 7):

Source: rh-dotnet50-dotnet-5.0.102-1.el7_9.src.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-2021-1723 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/

iQIUAwUBX/8ENtzjgjWX9erEAQjh5A/2IdPxRp4QSVH27LBp52uli+P8iYNYUQzJ oSP0BhxXlPnwty70y6h3XF04F2AgWdqddLa07e/lQo/tZfD4x8a7N5qJzCd3AaHy bhQaw5Rs2Yi/JM3l7nJbwL3kMnQ6+rg/w9IZG0JLPjEnURlcJmIArgIuNmWPBoxP GRVhNlEohEwbQhgwwp0PJkIhX9MxvpVT0OPbcUV6TGox65X+b8kMuUfjRhuKdEge l97WHuXTXa6QZMgaH28lSe8Vo6tkhzH89UEgo4CweybzptzPEgNfD4GOfpOrt9HG iqiRhMnpVrfp+nqet1k+seBfjeTkMfZBmrGR8nsU69rCqG85gWvtuT5j5ba5PWRg hHAg/bG4zIRlvRgIgTD00wVkGL0DC4zE/iI3bXZ7ATdl8pCADi1+uRyBwshbjbvL jFo8RrHE4DCtM1+X0jJhPnED3tMQmNQkmYd/sUzj6dM1OfYUFu6CDnyqOo9wIPkD yYTKp1/2lM8eJDtihM4vRRtfBUicagPAQ7Qu52VjDs9PwtSAReDE0FAnnfqfoRqt FXwdqez+GIpc6JgVp+wgof9zY3mq+MKS3WKZwt+v7KUbsSrg0sQTYpuMI+JFjG9l ZzAeU/ifax0HbO4R3rz2evVsT4yLGcSW7Yb/cTuPypLMFojFpSDzpkODfw3TGArj allfL6TeAQ== =fmd6 -----END PGP SIGNATURE-----

-- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce

Show details on source website

JSON

To clipboard

{
  "@context": {
    "@vocab": "https://www.variotdbs.pl/ref/VARIoTentry#",
    "affected_products": {
      "@id": "https://www.variotdbs.pl/ref/affected_products"
    },
    "configurations": {
      "@id": "https://www.variotdbs.pl/ref/configurations"
    },
    "credits": {
      "@id": "https://www.variotdbs.pl/ref/credits"
    },
    "cvss": {
      "@id": "https://www.variotdbs.pl/ref/cvss/"
    },
    "description": {
      "@id": "https://www.variotdbs.pl/ref/description/"
    },
    "exploit_availability": {
      "@id": "https://www.variotdbs.pl/ref/exploit_availability/"
    },
    "external_ids": {
      "@id": "https://www.variotdbs.pl/ref/external_ids/"
    },
    "iot": {
      "@id": "https://www.variotdbs.pl/ref/iot/"
    },
    "iot_taxonomy": {
      "@id": "https://www.variotdbs.pl/ref/iot_taxonomy/"
    },
    "patch": {
      "@id": "https://www.variotdbs.pl/ref/patch/"
    },
    "problemtype_data": {
      "@id": "https://www.variotdbs.pl/ref/problemtype_data/"
    },
    "references": {
      "@id": "https://www.variotdbs.pl/ref/references/"
    },
    "sources": {
      "@id": "https://www.variotdbs.pl/ref/sources/"
    },
    "sources_release_date": {
      "@id": "https://www.variotdbs.pl/ref/sources_release_date/"
    },
    "sources_update_date": {
      "@id": "https://www.variotdbs.pl/ref/sources_update_date/"
    },
    "threat_type": {
      "@id": "https://www.variotdbs.pl/ref/threat_type/"
    },
    "title": {
      "@id": "https://www.variotdbs.pl/ref/title/"
    },
    "type": {
      "@id": "https://www.variotdbs.pl/ref/type/"
    }
  },
  "@id": "https://www.variotdbs.pl/vuln/VAR-202101-1406",
  "affected_products": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/affected_products#",
      "data": {
        "@container": "@list"
      },
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        },
        "@id": "https://www.variotdbs.pl/ref/sources"
      }
    },
    "data": [
      {
        "model": "asp.net core",
        "scope": "gte",
        "trust": 1.0,
        "vendor": "microsoft",
        "version": "5.0"
      },
      {
        "model": "visual studio 2019",
        "scope": "gte",
        "trust": 1.0,
        "vendor": "microsoft",
        "version": "16.0"
      },
      {
        "model": "fedora",
        "scope": "eq",
        "trust": 1.0,
        "vendor": "fedoraproject",
        "version": "32"
      },
      {
        "model": "fedora",
        "scope": "eq",
        "trust": 1.0,
        "vendor": "fedoraproject",
        "version": "33"
      },
      {
        "model": "asp.net core",
        "scope": "gte",
        "trust": 1.0,
        "vendor": "microsoft",
        "version": "3.1"
      },
      {
        "model": "visual studio 2019",
        "scope": "lte",
        "trust": 1.0,
        "vendor": "microsoft",
        "version": "16.8"
      },
      {
        "model": "asp.net core",
        "scope": "lte",
        "trust": 1.0,
        "vendor": "microsoft",
        "version": "3.1.10"
      },
      {
        "model": "asp.net core",
        "scope": "lte",
        "trust": 1.0,
        "vendor": "microsoft",
        "version": "5.0.1"
      }
    ],
    "sources": [
      {
        "db": "NVD",
        "id": "CVE-2021-1723"
      }
    ]
  },
  "configurations": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/configurations#",
      "children": {
        "@container": "@list"
      },
      "cpe_match": {
        "@container": "@list"
      },
      "data": {
        "@container": "@list"
      },
      "nodes": {
        "@container": "@list"
      }
    },
    "data": [
      {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "3.1.10",
                "versionStartIncluding": "3.1",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "5.0.1",
                "versionStartIncluding": "5.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "16.8",
                "versionStartIncluding": "16.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      }
    ],
    "sources": [
      {
        "db": "NVD",
        "id": "CVE-2021-1723"
      }
    ]
  },
  "credits": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/credits#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "Red Hat",
    "sources": [
      {
        "db": "PACKETSTORM",
        "id": "160935"
      },
      {
        "db": "PACKETSTORM",
        "id": "160946"
      },
      {
        "db": "PACKETSTORM",
        "id": "160930"
      },
      {
        "db": "PACKETSTORM",
        "id": "160934"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202101-809"
      }
    ],
    "trust": 1.0
  },
  "cve": "CVE-2021-1723",
  "cvss": {
    "@context": {
      "cvssV2": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/cvss/cvssV2#"
        },
        "@id": "https://www.variotdbs.pl/ref/cvss/cvssV2"
      },
      "cvssV3": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/cvss/cvssV3#"
        },
        "@id": "https://www.variotdbs.pl/ref/cvss/cvssV3/"
      },
      "severity": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/cvss/severity#"
        },
        "@id": "https://www.variotdbs.pl/ref/cvss/severity"
      },
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        },
        "@id": "https://www.variotdbs.pl/ref/sources"
      }
    },
    "data": [
      {
        "cvssV2": [
          {
            "acInsufInfo": false,
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "author": "NVD",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "exploitabilityScore": 10.0,
            "impactScore": 2.9,
            "integrityImpact": "NONE",
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "severity": "MEDIUM",
            "trust": 1.0,
            "userInteractionRequired": false,
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          {
            "acInsufInfo": null,
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "author": "VULMON",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "exploitabilityScore": 10.0,
            "id": "CVE-2021-1723",
            "impactScore": 2.9,
            "integrityImpact": "NONE",
            "obtainAllPrivilege": null,
            "obtainOtherPrivilege": null,
            "obtainUserPrivilege": null,
            "severity": "MEDIUM",
            "trust": 0.1,
            "userInteractionRequired": null,
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          }
        ],
        "cvssV3": [
          {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "author": "NVD",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "exploitabilityScore": 3.9,
            "impactScore": 3.6,
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "trust": 2.0,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        ],
        "severity": [
          {
            "author": "NVD",
            "id": "CVE-2021-1723",
            "trust": 1.0,
            "value": "HIGH"
          },
          {
            "author": "secure@microsoft.com",
            "id": "CVE-2021-1723",
            "trust": 1.0,
            "value": "HIGH"
          },
          {
            "author": "CNNVD",
            "id": "CNNVD-202101-809",
            "trust": 0.6,
            "value": "HIGH"
          },
          {
            "author": "VULMON",
            "id": "CVE-2021-1723",
            "trust": 0.1,
            "value": "MEDIUM"
          }
        ]
      }
    ],
    "sources": [
      {
        "db": "VULMON",
        "id": "CVE-2021-1723"
      },
      {
        "db": "NVD",
        "id": "CVE-2021-1723"
      },
      {
        "db": "NVD",
        "id": "CVE-2021-1723"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202101-809"
      }
    ]
  },
  "description": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/description#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "ASP.NET Core and Visual Studio Denial of Service Vulnerability. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA256\n\n=====================================================================\n                   Red Hat Security Advisory\n\nSynopsis:          Important: .NET 5.0 on Red Hat Enterprise Linux security and bugfix update\nAdvisory ID:       RHSA-2021:0096-01\nProduct:           .NET Core on Red Hat Enterprise Linux\nAdvisory URL:      https://access.redhat.com/errata/RHSA-2021:0096\nIssue date:        2021-01-13\nCVE Names:         CVE-2021-1723 \n=====================================================================\n\n1. Summary:\n\nAn update for rh-dotnet50-dotnet is now available for .NET 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 5.0.102 and .NET Runtime\n5.0.2. \n\nSecurity Fix(es):\n\n* dotnet: ASP.NET Core Callbacks outside of locks cause Krestel deadlock\nwhen using HTTP2 (CVE-2021-1723)\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. Bugs fixed (https://bugzilla.redhat.com/):\n\n1914258 - CVE-2021-1723 dotnet: ASP.NET Core Callbacks outside of locks cause Krestel deadlock when using HTTP2\n\n6. Package List:\n\n.NET Core on Red Hat Enterprise Linux ComputeNode (v. 7):\n\nSource:\nrh-dotnet50-dotnet-5.0.102-1.el7_9.src.rpm\n\nx86_64:\nrh-dotnet50-aspnetcore-runtime-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-aspnetcore-targeting-pack-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-5.0.102-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-apphost-pack-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-debuginfo-5.0.102-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-host-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-hostfxr-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-runtime-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-sdk-5.0-5.0.102-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-targeting-pack-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-templates-5.0-5.0.102-1.el7_9.x86_64.rpm\nrh-dotnet50-netstandard-targeting-pack-2.1-5.0.102-1.el7_9.x86_64.rpm\n\n.NET Core on Red Hat Enterprise Linux Server (v. 7):\n\nSource:\nrh-dotnet50-dotnet-5.0.102-1.el7_9.src.rpm\n\nx86_64:\nrh-dotnet50-aspnetcore-runtime-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-aspnetcore-targeting-pack-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-5.0.102-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-apphost-pack-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-debuginfo-5.0.102-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-host-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-hostfxr-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-runtime-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-sdk-5.0-5.0.102-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-targeting-pack-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-templates-5.0-5.0.102-1.el7_9.x86_64.rpm\nrh-dotnet50-netstandard-targeting-pack-2.1-5.0.102-1.el7_9.x86_64.rpm\n\n.NET Core on Red Hat Enterprise Linux Workstation (v. 7):\n\nSource:\nrh-dotnet50-dotnet-5.0.102-1.el7_9.src.rpm\n\nx86_64:\nrh-dotnet50-aspnetcore-runtime-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-aspnetcore-targeting-pack-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-5.0.102-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-apphost-pack-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-debuginfo-5.0.102-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-host-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-hostfxr-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-runtime-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-sdk-5.0-5.0.102-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-targeting-pack-5.0-5.0.2-1.el7_9.x86_64.rpm\nrh-dotnet50-dotnet-templates-5.0-5.0.102-1.el7_9.x86_64.rpm\nrh-dotnet50-netstandard-targeting-pack-2.1-5.0.102-1.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-2021-1723\nhttps://access.redhat.com/security/updates/classification/#important\n\n8. Contact:\n\nThe Red Hat security contact is \u003csecalert@redhat.com\u003e. More contact\ndetails at https://access.redhat.com/security/team/contact/\n\nCopyright 2021 Red Hat, Inc. \n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1\n\niQIUAwUBX/8ENtzjgjWX9erEAQjh5A/2IdPxRp4QSVH27LBp52uli+P8iYNYUQzJ\noSP0BhxXlPnwty70y6h3XF04F2AgWdqddLa07e/lQo/tZfD4x8a7N5qJzCd3AaHy\nbhQaw5Rs2Yi/JM3l7nJbwL3kMnQ6+rg/w9IZG0JLPjEnURlcJmIArgIuNmWPBoxP\nGRVhNlEohEwbQhgwwp0PJkIhX9MxvpVT0OPbcUV6TGox65X+b8kMuUfjRhuKdEge\nl97WHuXTXa6QZMgaH28lSe8Vo6tkhzH89UEgo4CweybzptzPEgNfD4GOfpOrt9HG\niqiRhMnpVrfp+nqet1k+seBfjeTkMfZBmrGR8nsU69rCqG85gWvtuT5j5ba5PWRg\nhHAg/bG4zIRlvRgIgTD00wVkGL0DC4zE/iI3bXZ7ATdl8pCADi1+uRyBwshbjbvL\njFo8RrHE4DCtM1+X0jJhPnED3tMQmNQkmYd/sUzj6dM1OfYUFu6CDnyqOo9wIPkD\nyYTKp1/2lM8eJDtihM4vRRtfBUicagPAQ7Qu52VjDs9PwtSAReDE0FAnnfqfoRqt\nFXwdqez+GIpc6JgVp+wgof9zY3mq+MKS3WKZwt+v7KUbsSrg0sQTYpuMI+JFjG9l\nZzAeU/ifax0HbO4R3rz2evVsT4yLGcSW7Yb/cTuPypLMFojFpSDzpkODfw3TGArj\nallfL6TeAQ==\n=fmd6\n-----END PGP SIGNATURE-----\n\n--\nRHSA-announce mailing list\nRHSA-announce@redhat.com\nhttps://www.redhat.com/mailman/listinfo/rhsa-announce\n",
    "sources": [
      {
        "db": "NVD",
        "id": "CVE-2021-1723"
      },
      {
        "db": "VULMON",
        "id": "CVE-2021-1723"
      },
      {
        "db": "PACKETSTORM",
        "id": "160935"
      },
      {
        "db": "PACKETSTORM",
        "id": "160946"
      },
      {
        "db": "PACKETSTORM",
        "id": "160930"
      },
      {
        "db": "PACKETSTORM",
        "id": "160934"
      }
    ],
    "trust": 1.35
  },
  "external_ids": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/external_ids#",
      "data": {
        "@container": "@list"
      },
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": [
      {
        "db": "NVD",
        "id": "CVE-2021-1723",
        "trust": 2.1
      },
      {
        "db": "PACKETSTORM",
        "id": "160930",
        "trust": 0.7
      },
      {
        "db": "AUSCERT",
        "id": "ESB-2021.0129",
        "trust": 0.6
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202101-809",
        "trust": 0.6
      },
      {
        "db": "VULMON",
        "id": "CVE-2021-1723",
        "trust": 0.1
      },
      {
        "db": "PACKETSTORM",
        "id": "160935",
        "trust": 0.1
      },
      {
        "db": "PACKETSTORM",
        "id": "160946",
        "trust": 0.1
      },
      {
        "db": "PACKETSTORM",
        "id": "160934",
        "trust": 0.1
      }
    ],
    "sources": [
      {
        "db": "VULMON",
        "id": "CVE-2021-1723"
      },
      {
        "db": "PACKETSTORM",
        "id": "160935"
      },
      {
        "db": "PACKETSTORM",
        "id": "160946"
      },
      {
        "db": "PACKETSTORM",
        "id": "160930"
      },
      {
        "db": "PACKETSTORM",
        "id": "160934"
      },
      {
        "db": "NVD",
        "id": "CVE-2021-1723"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202101-809"
      }
    ]
  },
  "id": "VAR-202101-1406",
  "iot": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/iot#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": true,
    "sources": [
      {
        "db": "VARIoT devices database",
        "id": null
      }
    ],
    "trust": 0.21178882
  },
  "last_update_date": "2024-01-03T13:38:54.036000Z",
  "patch": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/patch#",
      "data": {
        "@container": "@list"
      },
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": [
      {
        "title": "Microsoft ASP.NET Core  and Visual Studio Security vulnerabilities",
        "trust": 0.6,
        "url": "http://www.cnnvd.org.cn/web/xxk/bdxqbyid.tag?id=139337"
      },
      {
        "title": "Red Hat: Important: dotnet5.0 security and bugfix update",
        "trust": 0.1,
        "url": "https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories\u0026qid=rhsa-20210094 - security advisory"
      },
      {
        "title": "Red Hat: Important: .NET Core 3.1 on Red Hat Enterprise Linux security and bugfix update",
        "trust": 0.1,
        "url": "https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories\u0026qid=rhsa-20210114 - security advisory"
      },
      {
        "title": "Red Hat: Important: dotnet3.1 security and bugfix update",
        "trust": 0.1,
        "url": "https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories\u0026qid=rhsa-20210095 - security advisory"
      },
      {
        "title": "Red Hat: Important: .NET 5.0 on Red Hat Enterprise Linux security and bugfix update",
        "trust": 0.1,
        "url": "https://vulmon.com/vendoradvisory?qidtp=red_hat_security_advisories\u0026qid=rhsa-20210096 - security advisory"
      },
      {
        "title": "Arch Linux Advisories: [ASA-202103-17] dotnet-sdk: multiple issues",
        "trust": 0.1,
        "url": "https://vulmon.com/vendoradvisory?qidtp=arch_linux_advisories\u0026qid=asa-202103-17"
      },
      {
        "title": "Arch Linux Issues: ",
        "trust": 0.1,
        "url": "https://vulmon.com/vendoradvisory?qidtp=arch_linux_issues\u0026qid=cve-2021-1723 log"
      },
      {
        "title": "Arch Linux Advisories: [ASA-202103-16] dotnet-runtime: multiple issues",
        "trust": 0.1,
        "url": "https://vulmon.com/vendoradvisory?qidtp=arch_linux_advisories\u0026qid=asa-202103-16"
      }
    ],
    "sources": [
      {
        "db": "VULMON",
        "id": "CVE-2021-1723"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202101-809"
      }
    ]
  },
  "problemtype_data": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/problemtype_data#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": [
      {
        "problemtype": "NVD-CWE-noinfo",
        "trust": 1.0
      }
    ],
    "sources": [
      {
        "db": "NVD",
        "id": "CVE-2021-1723"
      }
    ]
  },
  "references": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/references#",
      "data": {
        "@container": "@list"
      },
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": [
      {
        "trust": 1.7,
        "url": "https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/cve-2021-1723"
      },
      {
        "trust": 1.0,
        "url": "https://access.redhat.com/security/cve/cve-2021-1723"
      },
      {
        "trust": 1.0,
        "url": "https://nvd.nist.gov/vuln/detail/cve-2021-1723"
      },
      {
        "trust": 0.6,
        "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/rrxherxw4kr5wcp76udw5pc7gx3yqluw/"
      },
      {
        "trust": 0.6,
        "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3l27cgrvewupelnjogtcw6gledbecb4b/"
      },
      {
        "trust": 0.6,
        "url": "https://vigilance.fr/vulnerability/microsoft-visual-studio-vulnerabilities-of-january-2021-34297"
      },
      {
        "trust": 0.6,
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/cve-2020-17007/cve-2021-1723"
      },
      {
        "trust": 0.6,
        "url": "https://packetstormsecurity.com/files/160930/red-hat-security-advisory-2021-0096-01.html"
      },
      {
        "trust": 0.6,
        "url": "https://vigilance.fr/vulnerability/asp-net-core-denial-of-service-via-callbacks-34307"
      },
      {
        "trust": 0.6,
        "url": "https://www.auscert.org.au/bulletins/esb-2021.0129/"
      },
      {
        "trust": 0.4,
        "url": "https://www.redhat.com/mailman/listinfo/rhsa-announce"
      },
      {
        "trust": 0.4,
        "url": "https://bugzilla.redhat.com/):"
      },
      {
        "trust": 0.4,
        "url": "https://access.redhat.com/security/team/key/"
      },
      {
        "trust": 0.4,
        "url": "https://access.redhat.com/articles/11258"
      },
      {
        "trust": 0.4,
        "url": "https://access.redhat.com/security/team/contact/"
      },
      {
        "trust": 0.4,
        "url": "https://access.redhat.com/security/updates/classification/#important"
      },
      {
        "trust": 0.2,
        "url": "https://access.redhat.com/errata/rhsa-2021:0094"
      },
      {
        "trust": 0.1,
        "url": "https://cwe.mitre.org/data/definitions/.html"
      },
      {
        "trust": 0.1,
        "url": "https://nvd.nist.gov"
      },
      {
        "trust": 0.1,
        "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/193942"
      },
      {
        "trust": 0.1,
        "url": "https://access.redhat.com/errata/rhsa-2021:0095"
      },
      {
        "trust": 0.1,
        "url": "https://access.redhat.com/errata/rhsa-2021:0114"
      },
      {
        "trust": 0.1,
        "url": "https://access.redhat.com/errata/rhsa-2021:0096"
      }
    ],
    "sources": [
      {
        "db": "VULMON",
        "id": "CVE-2021-1723"
      },
      {
        "db": "PACKETSTORM",
        "id": "160935"
      },
      {
        "db": "PACKETSTORM",
        "id": "160946"
      },
      {
        "db": "PACKETSTORM",
        "id": "160930"
      },
      {
        "db": "PACKETSTORM",
        "id": "160934"
      },
      {
        "db": "NVD",
        "id": "CVE-2021-1723"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202101-809"
      }
    ]
  },
  "sources": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/sources#",
      "data": {
        "@container": "@list"
      }
    },
    "data": [
      {
        "db": "VULMON",
        "id": "CVE-2021-1723"
      },
      {
        "db": "PACKETSTORM",
        "id": "160935"
      },
      {
        "db": "PACKETSTORM",
        "id": "160946"
      },
      {
        "db": "PACKETSTORM",
        "id": "160930"
      },
      {
        "db": "PACKETSTORM",
        "id": "160934"
      },
      {
        "db": "NVD",
        "id": "CVE-2021-1723"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202101-809"
      }
    ]
  },
  "sources_release_date": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/sources_release_date#",
      "data": {
        "@container": "@list"
      }
    },
    "data": [
      {
        "date": "2021-01-12T00:00:00",
        "db": "VULMON",
        "id": "CVE-2021-1723"
      },
      {
        "date": "2021-01-13T15:19:08",
        "db": "PACKETSTORM",
        "id": "160935"
      },
      {
        "date": "2021-01-13T23:19:30",
        "db": "PACKETSTORM",
        "id": "160946"
      },
      {
        "date": "2021-01-13T15:11:46",
        "db": "PACKETSTORM",
        "id": "160930"
      },
      {
        "date": "2021-01-13T15:18:53",
        "db": "PACKETSTORM",
        "id": "160934"
      },
      {
        "date": "2021-01-12T20:15:34.993000",
        "db": "NVD",
        "id": "CVE-2021-1723"
      },
      {
        "date": "2021-01-12T00:00:00",
        "db": "CNNVD",
        "id": "CNNVD-202101-809"
      }
    ]
  },
  "sources_update_date": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/sources_update_date#",
      "data": {
        "@container": "@list"
      }
    },
    "data": [
      {
        "date": "2021-03-04T00:00:00",
        "db": "VULMON",
        "id": "CVE-2021-1723"
      },
      {
        "date": "2023-12-29T17:15:53.777000",
        "db": "NVD",
        "id": "CVE-2021-1723"
      },
      {
        "date": "2021-01-27T00:00:00",
        "db": "CNNVD",
        "id": "CNNVD-202101-809"
      }
    ]
  },
  "threat_type": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/threat_type#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "remote",
    "sources": [
      {
        "db": "CNNVD",
        "id": "CNNVD-202101-809"
      }
    ],
    "trust": 0.6
  },
  "title": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/title#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "Microsoft ASP.NET Core and Visual Studio Security hole",
    "sources": [
      {
        "db": "CNNVD",
        "id": "CNNVD-202101-809"
      }
    ],
    "trust": 0.6
  },
  "type": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/type#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "other",
    "sources": [
      {
        "db": "CNNVD",
        "id": "CNNVD-202101-809"
      }
    ],
    "trust": 0.6
  }
}

CVE-2021-1723 (GCVE-0-2021-1723)

Vulnerability from cvelistv5 – Published: 2021-01-12 19:42 – Updated: 2026-05-28 18:48

Title

ASP.NET Core and Visual Studio Denial of Service Vulnerability

Summary

ASP.NET Core and Visual Studio Denial of Service Vulnerability

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-06-04 18:52 UTC

CWE

Denial of Service
CWE-noinfo Not enough information

Assigner

microsoft mitre root Scorecard

References

2 references

URL	Tags
https://msrc.microsoft.com/update-guide/vulnerabi…	vendor-advisory
https://portal.msrc.microsoft.com/en-US/security-…	x_refsource_MISCx_transferred

Impacted products

5 products

Vendor	Product	Version
Microsoft	ASP.NET Core 3.1	Affected: 3.0 , < publication (custom) cpe:2.3:a:microsoft:asp.net_core:3.1:::::::*
Microsoft	ASP.NET Core 5.0	Affected: 5.0 , < publication (custom) cpe:2.3:a:microsoft:asp.net_core:5.0:::::::*
Microsoft	Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)	Affected: 16.0 , < publication (custom) cpe:2.3:a:microsoft:visual_studio_2019::::::::
Microsoft	Microsoft Visual Studio 2019 version 16.8	Affected: 16.0 , < publication (custom) cpe:2.3:a:microsoft:visual_studio_2019::::::::
Microsoft	Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)	Affected: 16.0.0 , < publication (custom) cpe:2.3:a:microsoft:visual_studio_2019::::::::

Date Public

2021-01-12 08:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T16:18:11.552Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1723"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-1723",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-06-04T18:52:30.773371Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-28T18:48:20.156Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:microsoft:asp.net_core:3.1:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "ASP.NET Core 3.1",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "publication",
              "status": "affected",
              "version": "3.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:asp.net_core:5.0:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "ASP.NET Core 5.0",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "publication",
              "status": "affected",
              "version": "5.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "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": "publication",
              "status": "affected",
              "version": "16.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft Visual Studio 2019 version 16.8",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "publication",
              "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": "publication",
              "status": "affected",
              "version": "16.0.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2021-01-12T08:00:00.000Z",
      "descriptions": [
        {
          "lang": "en-US",
          "value": "ASP.NET Core and Visual Studio Denial of Service Vulnerability"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Denial of Service",
              "lang": "en-US",
              "type": "Impact"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-10-08T16:17:31.472Z",
        "orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
        "shortName": "microsoft"
      },
      "references": [
        {
          "name": "ASP.NET Core and Visual Studio Denial of Service Vulnerability",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1723"
        }
      ],
      "title": "ASP.NET Core and Visual Studio Denial of Service Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
    "assignerShortName": "microsoft",
    "cveId": "CVE-2021-1723",
    "datePublished": "2021-01-12T19:42:47.000Z",
    "dateReserved": "2020-12-02T00:00:00.000Z",
    "dateUpdated": "2026-05-28T18:48:20.156Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

VAR-202101-1406

CVE-2021-1723 (GCVE-0-2021-1723)

Tags

Sightings

Nomenclature

Related by attack behaviour