Vulnerability-Lookup

RHSA-2021:0470

Vulnerability from csaf_redhat - Published: 2021-02-10 17:01 - Updated: 2026-02-24 16:21

Summary

Red Hat Security Advisory: .NET Core 2.1 on Red Hat Enterprise Linux security and bugfix update

Severity

Important

Notes

Topic: An update for rh-dotnet21-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.

Details: .NET Core 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 Core that address a security vulnerability are now available. The updated versions are .NET Core SDK 2.1.521 and .NET Core Runtime 2.1.25. Security Fix(es): * dotnet: certificate chain building recursion Denial of Service (CVE-2021-1721) 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.

Terms of Use: 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.

CVE-2021-1721

A flaw was found in dotnet. A recursion error when building X.509 certificate chains can lead to a stack overflow which could crash the system. The highest threat from this vulnerability is to system availability.

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CWE-674 - Uncontrolled Recursion

Affected products

Fixed 30 products

Product	Version	Remediation
Unresolved product id: 7ComputeNode-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.src	—	Vendor Fix fix
Unresolved product id: 7ComputeNode-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src	—	Vendor Fix fix
Unresolved product id: 7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7ComputeNode-dotNET-2.1:rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.src	—	Vendor Fix fix
Unresolved product id: 7Server-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src	—	Vendor Fix fix
Unresolved product id: 7Server-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-dotNET-2.1:rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-dotNET-2.1:rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-dotNET-2.1:rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-dotNET-2.1:rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7Workstation-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.src	—	Vendor Fix fix
Unresolved product id: 7Workstation-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7Workstation-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src	—	Vendor Fix fix
Unresolved product id: 7Workstation-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7Workstation-dotNET-2.1:rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7Workstation-dotNET-2.1:rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7Workstation-dotNET-2.1:rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7Workstation-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7Workstation-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64	—	Vendor Fix fix
Unresolved product id: 7Workstation-dotNET-2.1:rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64	—	Vendor Fix fix

Threats

Impact Important

References

10 references

URL	Category
https://access.redhat.com/errata/RHSA-2021:0470	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=1926918	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2021-1721	self
https://bugzilla.redhat.com/show_bug.cgi?id=1926918	external
https://www.cve.org/CVERecord?id=CVE-2021-1721	external
https://nvd.nist.gov/vuln/detail/CVE-2021-1721	external
https://github.com/dotnet/announcements/issues/175	external
https://msrc.microsoft.com/update-guide/vulnerabi…	external

JSON

To clipboard

{
  "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-dotnet21-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 Core 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 Core that address a security vulnerability are now available. The updated versions are .NET Core SDK 2.1.521 and .NET Core Runtime 2.1.25.\n\nSecurity Fix(es):\n\n* dotnet: certificate chain building recursion Denial of Service (CVE-2021-1721)\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-2021:0470",
        "url": "https://access.redhat.com/errata/RHSA-2021:0470"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#important",
        "url": "https://access.redhat.com/security/updates/classification/#important"
      },
      {
        "category": "external",
        "summary": "1926918",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1926918"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_0470.json"
      }
    ],
    "title": "Red Hat Security Advisory: .NET Core 2.1 on Red Hat Enterprise Linux security and bugfix update",
    "tracking": {
      "current_release_date": "2026-02-24T16:21:00+00:00",
      "generator": {
        "date": "2026-02-24T16:21:00+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.7.1"
        }
      },
      "id": "RHSA-2021:0470",
      "initial_release_date": "2021-02-10T17:01:10+00:00",
      "revision_history": [
        {
          "date": "2021-02-10T17:01:10+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2021-02-10T17:01:10+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2026-02-24T16:21:00+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-2.1",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:rhel_dotnet:2.1::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-2.1",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:rhel_dotnet:2.1::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-2.1",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:rhel_dotnet:2.1::el7"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": ".NET Core on Red Hat Enterprise Linux"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "rh-dotnet21-0:2.1-24.el7_9.src",
                "product": {
                  "name": "rh-dotnet21-0:2.1-24.el7_9.src",
                  "product_id": "rh-dotnet21-0:2.1-24.el7_9.src",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/rh-dotnet21@2.1-24.el7_9?arch=src"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src",
                "product": {
                  "name": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src",
                  "product_id": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/rh-dotnet21-dotnet@2.1.521-1.el7_9?arch=src"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "src"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "rh-dotnet21-0:2.1-24.el7_9.x86_64",
                "product": {
                  "name": "rh-dotnet21-0:2.1-24.el7_9.x86_64",
                  "product_id": "rh-dotnet21-0:2.1-24.el7_9.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/rh-dotnet21@2.1-24.el7_9?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64",
                "product": {
                  "name": "rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64",
                  "product_id": "rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/rh-dotnet21-runtime@2.1-24.el7_9?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64",
                "product": {
                  "name": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64",
                  "product_id": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/rh-dotnet21-dotnet@2.1.521-1.el7_9?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64",
                "product": {
                  "name": "rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64",
                  "product_id": "rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/rh-dotnet21-dotnet-host@2.1.25-1.el7_9?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64",
                "product": {
                  "name": "rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64",
                  "product_id": "rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/rh-dotnet21-dotnet-runtime-2.1@2.1.25-1.el7_9?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64",
                "product": {
                  "name": "rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64",
                  "product_id": "rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/rh-dotnet21-dotnet-sdk-2.1@2.1.521-1.el7_9?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64",
                "product": {
                  "name": "rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64",
                  "product_id": "rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/rh-dotnet21-dotnet-sdk-2.1.5xx@2.1.521-1.el7_9?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64",
                "product": {
                  "name": "rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64",
                  "product_id": "rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/rh-dotnet21-dotnet-debuginfo@2.1.521-1.el7_9?arch=x86_64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-0:2.1-24.el7_9.src as a component of .NET Core on Red Hat Enterprise Linux ComputeNode (v. 7)",
          "product_id": "7ComputeNode-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.src"
        },
        "product_reference": "rh-dotnet21-0:2.1-24.el7_9.src",
        "relates_to_product_reference": "7ComputeNode-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-0:2.1-24.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux ComputeNode (v. 7)",
          "product_id": "7ComputeNode-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-0:2.1-24.el7_9.x86_64",
        "relates_to_product_reference": "7ComputeNode-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src as a component of .NET Core on Red Hat Enterprise Linux ComputeNode (v. 7)",
          "product_id": "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src"
        },
        "product_reference": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src",
        "relates_to_product_reference": "7ComputeNode-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux ComputeNode (v. 7)",
          "product_id": "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64",
        "relates_to_product_reference": "7ComputeNode-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux ComputeNode (v. 7)",
          "product_id": "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64",
        "relates_to_product_reference": "7ComputeNode-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux ComputeNode (v. 7)",
          "product_id": "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64",
        "relates_to_product_reference": "7ComputeNode-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux ComputeNode (v. 7)",
          "product_id": "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64",
        "relates_to_product_reference": "7ComputeNode-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux ComputeNode (v. 7)",
          "product_id": "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64",
        "relates_to_product_reference": "7ComputeNode-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux ComputeNode (v. 7)",
          "product_id": "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64",
        "relates_to_product_reference": "7ComputeNode-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux ComputeNode (v. 7)",
          "product_id": "7ComputeNode-dotNET-2.1:rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64",
        "relates_to_product_reference": "7ComputeNode-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-0:2.1-24.el7_9.src as a component of .NET Core on Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.src"
        },
        "product_reference": "rh-dotnet21-0:2.1-24.el7_9.src",
        "relates_to_product_reference": "7Server-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-0:2.1-24.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-0:2.1-24.el7_9.x86_64",
        "relates_to_product_reference": "7Server-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src as a component of .NET Core on Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src"
        },
        "product_reference": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src",
        "relates_to_product_reference": "7Server-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64",
        "relates_to_product_reference": "7Server-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-dotNET-2.1:rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64",
        "relates_to_product_reference": "7Server-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-dotNET-2.1:rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64",
        "relates_to_product_reference": "7Server-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-dotNET-2.1:rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64",
        "relates_to_product_reference": "7Server-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64",
        "relates_to_product_reference": "7Server-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64",
        "relates_to_product_reference": "7Server-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-dotNET-2.1:rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64",
        "relates_to_product_reference": "7Server-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-0:2.1-24.el7_9.src as a component of .NET Core on Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.src"
        },
        "product_reference": "rh-dotnet21-0:2.1-24.el7_9.src",
        "relates_to_product_reference": "7Workstation-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-0:2.1-24.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-0:2.1-24.el7_9.x86_64",
        "relates_to_product_reference": "7Workstation-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src as a component of .NET Core on Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src"
        },
        "product_reference": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src",
        "relates_to_product_reference": "7Workstation-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64",
        "relates_to_product_reference": "7Workstation-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64",
        "relates_to_product_reference": "7Workstation-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64",
        "relates_to_product_reference": "7Workstation-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64",
        "relates_to_product_reference": "7Workstation-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64",
        "relates_to_product_reference": "7Workstation-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64",
        "relates_to_product_reference": "7Workstation-dotNET-2.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64 as a component of .NET Core on Red Hat Enterprise Linux Workstation (v. 7)",
          "product_id": "7Workstation-dotNET-2.1:rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64"
        },
        "product_reference": "rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64",
        "relates_to_product_reference": "7Workstation-dotNET-2.1"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-1721",
      "cwe": {
        "id": "CWE-674",
        "name": "Uncontrolled Recursion"
      },
      "discovery_date": "2021-02-09T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1926918"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in dotnet. A recursion error when building X.509 certificate chains can lead to a stack overflow which could crash the system. The highest threat from this vulnerability is to system availability.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "dotnet: certificate chain building recursion 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-2.1:rh-dotnet21-0:2.1-24.el7_9.src",
          "7ComputeNode-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.x86_64",
          "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src",
          "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64",
          "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64",
          "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64",
          "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64",
          "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64",
          "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64",
          "7ComputeNode-dotNET-2.1:rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64",
          "7Server-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.src",
          "7Server-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.x86_64",
          "7Server-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src",
          "7Server-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64",
          "7Server-dotNET-2.1:rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64",
          "7Server-dotNET-2.1:rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64",
          "7Server-dotNET-2.1:rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64",
          "7Server-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64",
          "7Server-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64",
          "7Server-dotNET-2.1:rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64",
          "7Workstation-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.src",
          "7Workstation-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.x86_64",
          "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src",
          "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64",
          "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64",
          "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64",
          "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64",
          "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64",
          "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64",
          "7Workstation-dotNET-2.1:rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2021-1721"
        },
        {
          "category": "external",
          "summary": "RHBZ#1926918",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1926918"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-1721",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-1721"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-1721",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-1721"
        },
        {
          "category": "external",
          "summary": "https://github.com/dotnet/announcements/issues/175",
          "url": "https://github.com/dotnet/announcements/issues/175"
        },
        {
          "category": "external",
          "summary": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1721",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1721"
        }
      ],
      "release_date": "2021-02-09T18:52:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-02-10T17:01:10+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "7ComputeNode-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.src",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.x86_64",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64",
            "7Server-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.src",
            "7Server-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.x86_64",
            "7Server-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src",
            "7Server-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64",
            "7Server-dotNET-2.1:rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64",
            "7Server-dotNET-2.1:rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64",
            "7Server-dotNET-2.1:rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64",
            "7Server-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64",
            "7Server-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64",
            "7Server-dotNET-2.1:rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64",
            "7Workstation-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.src",
            "7Workstation-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.x86_64",
            "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src",
            "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64",
            "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64",
            "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64",
            "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64",
            "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64",
            "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64",
            "7Workstation-dotNET-2.1:rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:0470"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "7ComputeNode-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.src",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.x86_64",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64",
            "7ComputeNode-dotNET-2.1:rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64",
            "7Server-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.src",
            "7Server-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.x86_64",
            "7Server-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src",
            "7Server-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64",
            "7Server-dotNET-2.1:rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64",
            "7Server-dotNET-2.1:rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64",
            "7Server-dotNET-2.1:rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64",
            "7Server-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64",
            "7Server-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64",
            "7Server-dotNET-2.1:rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64",
            "7Workstation-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.src",
            "7Workstation-dotNET-2.1:rh-dotnet21-0:2.1-24.el7_9.x86_64",
            "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.src",
            "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-0:2.1.521-1.el7_9.x86_64",
            "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-debuginfo-0:2.1.521-1.el7_9.x86_64",
            "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-host-0:2.1.25-1.el7_9.x86_64",
            "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-runtime-2.1-0:2.1.25-1.el7_9.x86_64",
            "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1-0:2.1.521-1.el7_9.x86_64",
            "7Workstation-dotNET-2.1:rh-dotnet21-dotnet-sdk-2.1.5xx-0:2.1.521-1.el7_9.x86_64",
            "7Workstation-dotNET-2.1:rh-dotnet21-runtime-0:2.1-24.el7_9.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "dotnet: certificate chain building recursion Denial of Service"
    }
  ]
}

CVE-2021-1721 (GCVE-0-2021-1721)

Vulnerability from cvelistv5 – Published: 2021-02-25 23:01 – Updated: 2024-08-03 16:18

Title

.NET Core and Visual Studio Denial of Service Vulnerability

Summary

.NET Core and Visual Studio Denial of Service Vulnerability

Severity

6.5 (Medium)


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

CWE

Denial of Service

Assigner

microsoft

References

1 reference

URL	Tags
https://portal.msrc.microsoft.com/en-US/security-…	x_refsource_MISC

Impacted products

9 products

Vendor	Product	Version
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::::::::
Microsoft	PowerShell Core 7.1	Affected: 7.1.0 , < publication (custom) cpe:2.3:a:microsoft:powershell_core::::::::
Microsoft	PowerShell Core 7.0	Affected: 7.0.0 , < publication (custom) cpe:2.3:a:microsoft:powershell_core::::::::
Microsoft	.NET Core 2.1	Affected: 2.1 , < publication (custom) cpe:2.3:a:microsoft:.net_core::::::::
Microsoft	.NET Core 3.1	Affected: 3.1 , < publication (custom) cpe:2.3:a:microsoft:.net_core::::::::
Microsoft	.NET 5.0	Affected: 5.0.0 , < publication (custom) cpe:2.3:a:microsoft:.net::::::::
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 2017 version 15.9 (includes 15.0 - 15.8)	Affected: 15.9.0 , < publication (custom) cpe:2.3:a:microsoft:visual_studio_2017::::::::

Date Public

2021-02-09 08:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T16:18:11.551Z",
          "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-2021-1721"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "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"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:powershell_core:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "PowerShell Core 7.1",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "publication",
              "status": "affected",
              "version": "7.1.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:powershell_core:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "PowerShell Core 7.0",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "publication",
              "status": "affected",
              "version": "7.0.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": ".NET Core 2.1",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "publication",
              "status": "affected",
              "version": "2.1",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": ".NET Core 3.1",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "publication",
              "status": "affected",
              "version": "3.1",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": ".NET 5.0",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "publication",
              "status": "affected",
              "version": "5.0.0",
              "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_2017:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "publication",
              "status": "affected",
              "version": "15.9.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2021-02-09T08:00:00.000Z",
      "descriptions": [
        {
          "lang": "en-US",
          "value": ".NET Core and Visual Studio Denial of Service Vulnerability"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:P/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": "2023-12-29T22:33:17.653Z",
        "orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
        "shortName": "microsoft"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1721"
        }
      ],
      "title": ".NET Core and Visual Studio Denial of Service Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
    "assignerShortName": "microsoft",
    "cveId": "CVE-2021-1721",
    "datePublished": "2021-02-25T23:01:26.000Z",
    "dateReserved": "2020-12-02T00:00:00.000Z",
    "dateUpdated": "2024-08-03T16:18:11.551Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

RHSA-2021:0470

CVE-2021-1721 (GCVE-0-2021-1721)

Tags

Sightings

Nomenclature