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Security advisory

Type: advisorySources: OSVCVE: CVE-2020-1108

A denial of service vulnerability exists when .NET Core or .NET Framework improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET Core or .NET Framework web application. The vulnerability can be exploited remotely, without authentication. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the .NET Core or .NET Framework application. The update addresses the vulnerability by correcting how the .NET Core or .NET Framework web application handles web requests.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2020-1108
Confirmed fixed CVEs
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Updated in this feed
1 Nov 2026, 08:11 UTC · Revision 1

Source evidence

CVE-2020-1108

core-osv · Original source

Published 21 May 2020, 23:15 UTC

A denial of service vulnerability exists when .NET Core or .NET Framework improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET Core or .NET Framework web application. The vulnerability can be exploited remotely, without authentication. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the .NET Core or .NET Framework application. The update addresses the vulnerability by correcting how the .NET Core or .NET Framework web application handles web requests.

osv:CVE-2020-1108
Complete source record
{
  "id": "fc72d3bdd054447fab0be4054e52b39e91ecadfa46062daf76d8805ab6f412f1",
  "url": "https://osv.dev/vulnerability/CVE-2020-1108",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-1108",
    "summary": "A denial of service vulnerability exists when .NET Core or .NET Framework improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET Core or .NET Framework web application. The vulnerability can be exploited remotely, without authentication. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the .NET Core or .NET Framework application. The update addresses the vulnerability by correcting how the .NET Core or .NET Framework web application handles web requests.",
    "evidence": "osv:CVE-2020-1108",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-1108",
      "aliases": [
        "BIT-dotnet-2020-1108",
        "BIT-dotnet-sdk-2020-1108",
        "BIT-powershell-2020-1108",
        "CVE-2020-1108",
        "GHSA-3w5p-jhp5-c29q"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/dotnet/core",
              "type": "GIT",
              "events": [
                {
                  "introduced": "e7dd0cd3ff917f087f7af2163006d7df6827438b"
                },
                {
                  "last_affected": "4e184a78a2ee54b26f53764bc4d9b3a8e0deb686"
                },
                {
                  "last_affected": "e7dd0cd3ff917f087f7af2163006d7df6827438b"
                },
                {
                  "introduced": "5c0a0489d157ca82fca6f9b73c682f118e8c4a8a"
                },
                {
                  "last_affected": "5c0a0489d157ca82fca6f9b73c682f118e8c4a8a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.1"
                      },
                      {
                        "last_affected": "2.1.18"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:microsoft:.net_core:2.1:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.1"
                      },
                      {
                        "last_affected": "2.1"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:microsoft:.net_core:3.1:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.1"
                      },
                      {
                        "last_affected": "3.1"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.1",
            "v3.1.0",
            "v2.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-1108.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/powershell/powershell",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b54b188c1804d4dcebb09a8be3a67916abd94fd7"
                },
                {
                  "last_affected": "370f5a7eb1a302e31cac6228181ffc184a32c47a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:microsoft:powershell:7.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.0"
                      },
                      {
                        "last_affected": "7.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:microsoft:powershell_core:6.2:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "6.2"
                      },
                      {
                        "last_affected": "6.2"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "6.2",
            "7.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-1108.json"
          }
        }
      ],
      "modified": "2026-10-24T10:31:04.046043594Z",
      "provider": "osv",
      "references": [
        "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1108",
        "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1108"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "microsoft:.net_core",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "3.0"
                  },
                  {
                    "last_affected": "3.1.4"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:a:microsoft:.net:5.0:preview1:*:*:*:*:*:*",
              "cpe:2.3:a:microsoft:.net:5.0:preview2:*:*:*:*:*:*",
              "cpe:2.3:a:microsoft:.net:5.0:preview3:*:*:*:*:*:*"
            ],
            "vendor_product": "microsoft:.net",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "5.0-preview1"
                  },
                  {
                    "last_affected": "5.0-preview1"
                  },
                  {
                    "introduced": "5.0-preview2"
                  },
                  {
                    "last_affected": "5.0-preview2"
                  },
                  {
                    "introduced": "5.0-preview3"
                  },
                  {
                    "last_affected": "5.0-preview3"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:*",
              "cpe:2.3:a:microsoft:.net_framework:3.0:sp2:*:*:*:*:*:*",
              "cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*",
              "cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*",
              "cpe:2.3:a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*",
              "cpe:2.3:a:microsoft:.net_framework:4.6.1:*:*:*:*:*:*:*",
              "cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*",
              "cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*",
              "cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*",
              "cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*",
              "cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*",
              "cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*"
            ],
            "vendor_product": "microsoft:.net_framework",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "2.0-sp2"
                  },
                  {
                    "last_affected": "2.0-sp2"
                  },
                  {
                    "introduced": "3.0-sp2"
                  },
                  {
                    "last_affected": "3.0-sp2"
                  },
                  {
                    "introduced": "4.6"
                  },
                  {
                    "last_affected": "4.6"
                  },
                  {
                    "introduced": "3.5"
                  },
                  {
                    "last_affected": "3.5"
                  },
                  {
                    "introduced": "3.5"
                  },
                  {
                    "last_affected": "3.5"
                  },
                  {
                    "introduced": "4.5.2"
                  },
                  {
                    "last_affected": "4.5.2"
                  },
                  {
                    "introduced": "4.6"
                  },
                  {
                    "last_affected": "4.6"
                  },
                  {
                    "introduced": "4.6.1"
                  },
                  {
                    "last_affected": "4.6.1"
                  },
                  {
                    "introduced": "4.6.2"
                  },
                  {
                    "last_affected": "4.6.2"
                  },
                  {
                    "introduced": "4.7"
                  },
                  {
                    "last_affected": "4.7"
                  },
                  {
                    "introduced": "4.7.1"
                  },
                  {
                    "last_affected": "4.7.1"
                  },
                  {
                    "introduced": "4.7.2"
                  },
                  {
                    "last_affected": "4.7.2"
                  },
                  {
                    "introduced": "4.8"
                  },
                  {
                    "last_affected": "4.8"
                  },
                  {
                    "introduced": "3.5"
                  },
                  {
                    "last_affected": "3.5"
                  },
                  {
                    "introduced": "4.6.2"
                  },
                  {
                    "last_affected": "4.6.2"
                  },
                  {
                    "introduced": "4.7"
                  },
                  {
                    "last_affected": "4.7"
                  },
                  {
                    "introduced": "4.7.1"
                  },
                  {
                    "last_affected": "4.7.1"
                  },
                  {
                    "introduced": "4.7.2"
                  },
                  {
                    "last_affected": "4.7.2"
                  },
                  {
                    "introduced": "4.8"
                  },
                  {
                    "last_affected": "4.8"
                  },
                  {
                    "introduced": "3.5"
                  },
                  {
                    "last_affected": "3.5"
                  },
                  {
                    "introduced": "4.6.2"
                  },
                  {
                    "last_affected": "4.6.2"
                  },
                  {
                    "introduced": "4.7"
                  },
                  {
                    "last_affected": "4.7"
                  },
                  {
                    "introduced": "4.7.1"
                  },
                  {
                    "last_affected": "4.7.1"
                  },
                  {
                    "introduced": "4.7.2"
                  },
                  {
                    "last_affected": "4.7.2"
                  },
                  {
                    "introduced": "4.8"
                  },
                  {
                    "last_affected": "4.8"
                  },
                  {
                    "introduced": "3.5"
                  },
                  {
                    "last_affected": "3.5"
                  },
                  {
                    "introduced": "4.6"
                  },
                  {
                    "last_affected": "4.6"
                  },
                  {
                    "introduced": "4.6.1"
                  },
                  {
                    "last_affected": "4.6.1"
                  },
                  {
                    "introduced": "4.6.2"
                  },
                  {
                    "last_affected": "4.6.2"
                  },
                  {
                    "introduced": "3.5"
                  },
                  {
                    "last_affected": "3.5"
                  },
                  {
                    "introduced": "4.7.1"
                  },
                  {
                    "last_affected": "4.7.1"
                  },
                  {
                    "introduced": "4.7.2"
                  },
                  {
                    "last_affected": "4.7.2"
                  },
                  {
                    "introduced": "4.8"
                  },
                  {
                    "last_affected": "4.8"
                  },
                  {
                    "introduced": "3.5"
                  },
                  {
                    "last_affected": "3.5"
                  },
                  {
                    "introduced": "4.7.1"
                  },
                  {
                    "last_affected": "4.7.1"
                  },
                  {
                    "introduced": "4.7.2"
                  },
                  {
                    "last_affected": "4.7.2"
                  },
                  {
                    "introduced": "3.5"
                  },
                  {
                    "last_affected": "3.5"
                  },
                  {
                    "introduced": "4.7.2"
                  },
                  {
                    "last_affected": "4.7.2"
                  },
                  {
                    "introduced": "4.8"
                  },
                  {
                    "last_affected": "4.8"
                  },
                  {
                    "introduced": "3.5"
                  },
                  {
                    "last_affected": "3.5"
                  },
                  {
                    "introduced": "4.7.2"
                  },
                  {
                    "last_affected": "4.7.2"
                  },
                  {
                    "introduced": "4.8"
                  },
                  {
                    "last_affected": "4.8"
                  },
                  {
                    "introduced": "3.5"
                  },
                  {
                    "last_affected": "3.5"
                  },
                  {
                    "introduced": "4.8"
                  },
                  {
                    "last_affected": "4.8"
                  },
                  {
                    "introduced": "3.5"
                  },
                  {
                    "last_affected": "3.5"
                  },
                  {
                    "introduced": "4.8"
                  },
                  {
                    "last_affected": "4.8"
                  },
                  {
                    "introduced": "3.5"
                  },
                  {
                    "last_affected": "3.5"
                  },
                  {
                    "introduced": "4.8"
                  },
                  {
                    "last_affected": "4.8"
                  },
                  {
                    "introduced": "3.5.1"
                  },
                  {
                    "last_affected": "3.5.1"
                  },
                  {
                    "introduced": "4.6"
                  },
                  {
                    "last_affected": "4.6"
                  },
                  {
                    "introduced": "4.6.1"
                  },
                  {
                    "last_affected": "4.6.1"
                  },
                  {
                    "introduced": "4.6.2"
                  },
                  {
                    "last_affected": "4.6.2"
                  },
                  {
                    "introduced": "4.7"
                  },
                  {
                    "last_affected": "4.7"
                  },
                  {
                    "introduced": "4.7.1"
                  },
                  {
                    "last_affected": "4.7.1"
                  },
                  {
                    "introduced": "4.7.2"
                  },
                  {
                    "last_affected": "4.7.2"
                  },
                  {
                    "introduced": "4.8"
                  },
                  {
                    "last_affected": "4.8"
                  },
                  {
                    "introduced": "4.5.2"
                  },
                  {
                    "last_affected": "4.5.2"
                  },
                  {
                    "introduced": "4.6"
                  },
                  {
                    "last_affected": "4.6"
                  },
                  {
                    "introduced": "4.6.1"
                  },
                  {
                    "last_affected": "4.6.1"
                  },
                  {
                    "introduced": "4.6.2"
                  },
                  {
                    "last_affected": "4.6.2"
                  },
                  {
                    "introduced": "4.7"
                  },
                  {
                    "last_affected": "4.7"
                  },
                  {
                    "introduced": "4.7.1"
                  },
                  {
                    "last_affected": "4.7.1"
                  },
                  {
                    "introduced": "4.7.2"
                  },
                  {
                    "last_affected": "4.7.2"
                  },
                  {
                    "introduced": "4.5.2"
                  },
                  {
                    "last_affected": "4.5.2"
                  },
                  {
                    "introduced": "4.6"
                  },
                  {
                    "last_affected": "4.6"
                  },
                  {
                    "introduced": "4.6.1"
                  },
                  {
                    "last_affected": "4.6.1"
                  },
                  {
                    "introduced": "4.6.2"
                  },
                  {
                    "last_affected": "4.6.2"
                  },
                  {
                    "introduced": "4.7"
                  },
                  {
                    "last_affected": "4.7"
                  },
                  {
                    "introduced": "4.7.1"
                  },
                  {
                    "last_affected": "4.7.1"
                  },
                  {
                    "introduced": "4.7.2"
                  },
                  {
                    "last_affected": "4.7.2"
                  },
                  {
                    "introduced": "4.8"
                  },
                  {
                    "last_affected": "4.8"
                  },
                  {
                    "introduced": "4.5.2"
                  },
                  {
                    "last_affected": "4.5.2"
                  },
                  {
                    "introduced": "4.5.2"
                  },
                  {
                    "last_affected": "4.5.2"
                  },
                  {
                    "introduced": "3.5"
                  },
                  {
                    "last_affected": "3.5"
                  },
                  {
                    "introduced": "4.7.2"
                  },
                  {
                    "last_affected": "4.7.2"
                  },
                  {
                    "introduced": "4.5.2"
                  },
                  {
                    "last_affected": "4.5.2"
                  },
                  {
                    "introduced": "4.5.2"
                  },
                  {
                    "last_affected": "4.5.2"
                  },
                  {
                    "introduced": "4.6"
                  },
                  {
                    "last_affected": "4.6"
                  },
                  {
                    "introduced": "4.6.1"
                  },
                  {
                    "last_affected": "4.6.1"
                  },
                  {
                    "introduced": "4.6.2"
                  },
                  {
                    "last_affected": "4.6.2"
                  },
                  {
                    "introduced": "4.7"
                  },
                  {
                    "last_affected": "4.7"
                  },
                  {
                    "introduced": "4.7.1"
                  },
                  {
                    "last_affected": "4.7.1"
                  },
                  {
                    "introduced": "4.7.2"
                  },
                  {
                    "last_affected": "4.7.2"
                  },
                  {
                    "introduced": "4.8"
                  },
                  {
                    "last_affected": "4.8"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:a:microsoft:powershell:7.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "microsoft:powershell",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "7.0"
                  },
                  {
                    "last_affected": "7.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:a:microsoft:visual_studio_2017:15.9:*:*:*:*:*:*:*"
            ],
            "vendor_product": "microsoft:visual_studio_2017",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "15.9"
                  },
                  {
                    "last_affected": "15.9"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:a:microsoft:visual_studio_2019:16.0:*:*:*:*:*:*:*",
              "cpe:2.3:a:microsoft:visual_studio_2019:16.4:*:*:*:*:*:*:*",
              "cpe:2.3:a:microsoft:visual_studio_2019:16.5:*:*:*:*:*:*:*"
            ],
            "vendor_product": "microsoft:visual_studio_2019",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "16.0"
                  },
                  {
                    "last_affected": "16.0"
                  },
                  {
                    "introduced": "16.4"
                  },
                  {
                    "last_affected": "16.4"
                  },
                  {
                    "introduced": "16.5"
                  },
                  {
                    "last_affected": "16.5"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-1108",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 440414,
  "published_at": "2020-05-21T23:15:14.867+00:00"
}