CVE-2021-43877 (GCVE-0-2021-43877)

Vulnerability from cvelistv5 – Published: 2021-12-15 14:15 – Updated: 2024-08-04 04:10
VLAI
Title
ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
Summary
ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
CWE
  • Elevation of Privilege
References
Impacted products
Vendor Product Version
Microsoft Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6) Affected: 16.0.0 , < 16.7.23 (custom)
    cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*
Create a notification for this product.
Microsoft Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8) Affected: 15.0.0 , < 16.9.15 (custom)
    cpe:2.3:a:microsoft:visual_studio_2019:16.9:*:*:*:*:*:*:*
Create a notification for this product.
Microsoft Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10) Affected: 16.11.0 , < 16.11.8 (custom)
    cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*
Create a notification for this product.
Microsoft Microsoft Visual Studio 2022 version 17.0 Affected: 17.0.0 , < 17.0.3 (custom)
    cpe:2.3:a:microsoft:visual_studio_2022:17.0:*:*:*:*:*:*:*
Create a notification for this product.
Microsoft ASP.NET Core 3.1 Affected: 3.0 , < 3.1.22 (custom)
    cpe:2.3:a:microsoft:asp.net_core:3.1:*:*:*:*:*:*:*
Create a notification for this product.
Microsoft ASP.NET Core 5.0 Affected: 5.0 , < 5.0.13 (custom)
    cpe:2.3:a:microsoft:asp.net_core:5.0:*:*:*:*:*:*:*
Create a notification for this product.
Microsoft ASP.NET Core 6.0 Affected: 6.0 , < 6.0.101 (custom)
    cpe:2.3:a:microsoft:asp.net_core:6.0:*:*:*:*:*:*:*
Create a notification for this product.
Microsoft Microsoft Visual Studio 2022 version 17.1 Affected: 17.0.0 , < 17.1.4 (custom)
    cpe:2.3:a:microsoft:visual_studio_2022:17.1:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2021-12-14 08:00
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T04:10:17.113Z",
          "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-2021-43877"
          }
        ],
        "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": "16.7.23",
              "status": "affected",
              "version": "16.0.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:visual_studio_2019:16.9:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "16.9.15",
              "status": "affected",
              "version": "15.0.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10)",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "16.11.8",
              "status": "affected",
              "version": "16.11.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:visual_studio_2022:17.0:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft Visual Studio 2022 version 17.0",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "17.0.3",
              "status": "affected",
              "version": "17.0.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:asp.net_core:3.1:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "ASP.NET Core 3.1",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "3.1.22",
              "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": "5.0.13",
              "status": "affected",
              "version": "5.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:asp.net_core:6.0:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "ASP.NET Core 6.0",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "6.0.101",
              "status": "affected",
              "version": "6.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:visual_studio_2022:17.1:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft Visual Studio 2022 version 17.1",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "17.1.4",
              "status": "affected",
              "version": "17.0.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2021-12-14T08:00:00.000Z",
      "descriptions": [
        {
          "lang": "en-US",
          "value": "ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Elevation of Privilege",
              "lang": "en-US",
              "type": "Impact"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-05-29T14:44:33.540Z",
        "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-2021-43877"
        }
      ],
      "title": "ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
    "assignerShortName": "microsoft",
    "cveId": "CVE-2021-43877",
    "datePublished": "2021-12-15T14:15:31.000Z",
    "dateReserved": "2021-11-16T00:00:00.000Z",
    "dateUpdated": "2024-08-04T04:10:17.113Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-43877",
      "date": "2026-10-02",
      "epss": "0.00716",
      "percentile": "0.52086"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "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": "16.7.23",
                    "status": "affected",
                    "version": "16.0.0",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "cpes": [
                  "cpe:2.3:a:microsoft:visual_studio_2019:16.9:*:*:*:*:*:*:*"
                ],
                "platforms": [
                  "Unknown"
                ],
                "product": "Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)",
                "vendor": "Microsoft",
                "versions": [
                  {
                    "lessThan": "16.9.15",
                    "status": "affected",
                    "version": "15.0.0",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "cpes": [
                  "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"
                ],
                "platforms": [
                  "Unknown"
                ],
                "product": "Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10)",
                "vendor": "Microsoft",
                "versions": [
                  {
                    "lessThan": "16.11.8",
                    "status": "affected",
                    "version": "16.11.0",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "cpes": [
                  "cpe:2.3:a:microsoft:visual_studio_2022:17.0:*:*:*:*:*:*:*"
                ],
                "platforms": [
                  "Unknown"
                ],
                "product": "Microsoft Visual Studio 2022 version 17.0",
                "vendor": "Microsoft",
                "versions": [
                  {
                    "lessThan": "17.0.3",
                    "status": "affected",
                    "version": "17.0.0",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "cpes": [
                  "cpe:2.3:a:microsoft:asp.net_core:3.1:*:*:*:*:*:*:*"
                ],
                "platforms": [
                  "Unknown"
                ],
                "product": "ASP.NET Core 3.1",
                "vendor": "Microsoft",
                "versions": [
                  {
                    "lessThan": "3.1.22",
                    "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": "5.0.13",
                    "status": "affected",
                    "version": "5.0",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "cpes": [
                  "cpe:2.3:a:microsoft:asp.net_core:6.0:*:*:*:*:*:*:*"
                ],
                "platforms": [
                  "Unknown"
                ],
                "product": "ASP.NET Core 6.0",
                "vendor": "Microsoft",
                "versions": [
                  {
                    "lessThan": "6.0.101",
                    "status": "affected",
                    "version": "6.0",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "cpes": [
                  "cpe:2.3:a:microsoft:visual_studio_2022:17.1:*:*:*:*:*:*:*"
                ],
                "platforms": [
                  "Unknown"
                ],
                "product": "Microsoft Visual Studio 2022 version 17.1",
                "vendor": "Microsoft",
                "versions": [
                  {
                    "lessThan": "17.1.4",
                    "status": "affected",
                    "version": "17.0.0",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "secure@microsoft.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:microsoft:asp.net_core:3.1:*:*:*:*:*:*:*",
                    "matchCriteriaId": "5FE4072E-3226-435C-BC61-A775D3EF2822",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:microsoft:asp.net_core:5.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A5C2DF1D-063A-432E-8E7A-39A9C7C9582D",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:microsoft:asp.net_core:6.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E907B35E-144C-43AA-9902-3F19ACAE3D77",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:microsoft:visual_studio_2019:16.7:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E47AD481-C23D-4610-B9BC-844F7B8F7A28",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:microsoft:visual_studio_2019:16.9:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DF6CF9B0-D279-42CD-A84D-48327F44422D",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:microsoft:visual_studio_2019:16.11:*:*:*:*:*:*:*",
                    "matchCriteriaId": "99E7DAC9-17EF-40D4-AEEC-C24970B7190F",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:microsoft:visual_studio_2022:17.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "3393F97F-05CD-4B04-A6E1-3D914652C4E5",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability"
          },
          {
            "lang": "es",
            "value": "Una vulnerabilidad de Elevaci\u00f3n de Privilegios en ASP.NET Core y Visual Studio"
          }
        ],
        "id": "CVE-2021-43877",
        "lastModified": "2026-06-17T04:11:36.427",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "LOCAL",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 4.6,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.0,
              "impactScore": 6.0,
              "source": "secure@microsoft.com",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Secondary"
            }
          ]
        },
        "published": "2021-12-15T15:15:10.950",
        "references": [
          {
            "source": "secure@microsoft.com",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43877"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43877"
          }
        ],
        "sourceIdentifier": "secure@microsoft.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2025-11-21T15:46:27+00:00",
      "cve": "CVE-2021-43877",
      "id": "CVE-2021-43877",
      "initial_release_date": "2021-12-14T00:00:00+00:00",
      "product_status:known_not_affected": "38",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "dotnet: ASPNetCore processPath privilege escalation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-43877.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.

Loading…

Loading…

Loading…

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.


Loading…