Vulnerability-Lookup

FKIE_CVE-2023-6803

Vulnerability from fkie_nvd - Published: 2023-12-21 21:15 - Updated: 2026-06-17 06:51

Severity

5.8 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L
4.0 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N

Summary

A race condition in GitHub Enterprise Server allows an outside collaborator to be added while a repository is being transferred. This vulnerability affected all versions of GitHub Enterprise Server since 3.8 and was fixed in version 3.8.12, 3.9.7, 3.10.4, and 3.11.1.

References

URL	Tags
product-cna@github.com	https://docs.github.com/en/enterprise-server@3.10/admin/release-notes#3.10.4	Release Notes
product-cna@github.com	https://docs.github.com/en/enterprise-server@3.11/admin/release-notes#3.11.1	Release Notes
product-cna@github.com	https://docs.github.com/en/enterprise-server@3.8/admin/release-notes#3.8.12	Release Notes
product-cna@github.com	https://docs.github.com/en/enterprise-server@3.9/admin/release-notes#3.9.7	Release Notes
af854a3a-2127-422b-91ae-364da2661108	https://docs.github.com/en/enterprise-server@3.10/admin/release-notes#3.10.4	Release Notes
af854a3a-2127-422b-91ae-364da2661108	https://docs.github.com/en/enterprise-server@3.11/admin/release-notes#3.11.1	Release Notes
af854a3a-2127-422b-91ae-364da2661108	https://docs.github.com/en/enterprise-server@3.8/admin/release-notes#3.8.12	Release Notes
af854a3a-2127-422b-91ae-364da2661108	https://docs.github.com/en/enterprise-server@3.9/admin/release-notes#3.9.7	Release Notes

Impacted products

Vendor	Product	Version
github	enterprise_server	*
github	enterprise_server	*
github	enterprise_server	*
github	enterprise_server	3.11.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "affected",
          "product": "Enterprise Server",
          "vendor": "GitHub",
          "versions": [
            {
              "changes": [
                {
                  "at": "3.8.12",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "3.8.11",
              "status": "affected",
              "version": "3.8",
              "versionType": "semver"
            },
            {
              "changes": [
                {
                  "at": "3.9.7",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "3.9.6",
              "status": "affected",
              "version": "3.9",
              "versionType": "semver"
            },
            {
              "changes": [
                {
                  "at": "3.10.4",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "3.10.3",
              "status": "affected",
              "version": "3.10",
              "versionType": "semver"
            },
            {
              "changes": [
                {
                  "at": "3.11.1",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "3.11.0",
              "status": "affected",
              "version": "3.11",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "product-cna@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B3D983FF-FDDE-484C-AA34-31EB52E25EC2",
              "versionEndExcluding": "3.8.12",
              "versionStartIncluding": "3.8.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B118EB53-4459-4817-8F74-002DBA4860DA",
              "versionEndExcluding": "3.9.7",
              "versionStartIncluding": "3.9.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F65FB74F-11AB-439B-9CF0-9F08E03E4083",
              "versionEndExcluding": "3.10.4",
              "versionStartIncluding": "3.10.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:github:enterprise_server:3.11.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "AC723276-C3EE-4F79-857A-3A5C078C33E2",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A race condition in GitHub Enterprise Server allows an outside collaborator to be added while a repository is being transferred. This vulnerability affected all versions of GitHub Enterprise Server since 3.8 and was fixed in version 3.8.12, 3.9.7, 3.10.4, and 3.11.1. \n"
    },
    {
      "lang": "es",
      "value": "Una condici\u00f3n de ejecuci\u00f3n en GitHub Enterprise Server permite agregar un colaborador externo mientras se transfiere un repositorio. Esta vulnerabilidad afect\u00f3 a todas las versiones de GitHub Enterprise Server desde la 3.8 y se solucion\u00f3 en las versiones 3.8.12, 3.9.7, 3.10.4 y 3.11.1."
    }
  ],
  "id": "CVE-2023-6803",
  "lastModified": "2026-06-17T06:51:27.307",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
          "baseScore": 5.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 0.3,
        "impactScore": 5.5,
        "source": "product-cna@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 4.0,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 0.3,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2023-12-21T21:15:14.800",
  "references": [
    {
      "source": "product-cna@github.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://docs.github.com/en/enterprise-server@3.10/admin/release-notes#3.10.4"
    },
    {
      "source": "product-cna@github.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://docs.github.com/en/enterprise-server@3.11/admin/release-notes#3.11.1"
    },
    {
      "source": "product-cna@github.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://docs.github.com/en/enterprise-server@3.8/admin/release-notes#3.8.12"
    },
    {
      "source": "product-cna@github.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://docs.github.com/en/enterprise-server@3.9/admin/release-notes#3.9.7"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes"
      ],
      "url": "https://docs.github.com/en/enterprise-server@3.10/admin/release-notes#3.10.4"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes"
      ],
      "url": "https://docs.github.com/en/enterprise-server@3.11/admin/release-notes#3.11.1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes"
      ],
      "url": "https://docs.github.com/en/enterprise-server@3.8/admin/release-notes#3.8.12"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes"
      ],
      "url": "https://docs.github.com/en/enterprise-server@3.9/admin/release-notes#3.9.7"
    }
  ],
  "sourceIdentifier": "product-cna@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-367"
        }
      ],
      "source": "product-cna@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-367"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2023-6803 (GCVE-0-2023-6803)

Vulnerability from cvelistv5 – Published: 2023-12-21 20:45 – Updated: 2024-08-02 08:42

Title

Race Condition allows Unauthorized Outside Collaborator

Summary

Severity

5.8 (Medium)


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

CWE

CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

Assigner

GitHub_P mitre root

References

4 references

URL	Tags
https://docs.github.com/en/enterprise-server@3.8/…
https://docs.github.com/en/enterprise-server@3.9/…
https://docs.github.com/en/enterprise-server@3.10…
https://docs.github.com/en/enterprise-server@3.11…

Impacted products

1 product

Vendor	Product	Version
GitHub	Enterprise Server	Affected: 3.8 , ≤ 3.8.11 (semver) Affected: 3.9 , ≤ 3.9.6 (semver) Affected: 3.10 , ≤ 3.10.3 (semver) Affected: 3.11 , ≤ 3.11.0 (semver)

Credits

inspector-ambitious

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T08:42:07.752Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://docs.github.com/en/enterprise-server@3.8/admin/release-notes#3.8.12"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://docs.github.com/en/enterprise-server@3.9/admin/release-notes#3.9.7"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://docs.github.com/en/enterprise-server@3.10/admin/release-notes#3.10.4"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://docs.github.com/en/enterprise-server@3.11/admin/release-notes#3.11.1"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "Enterprise Server",
          "vendor": "GitHub",
          "versions": [
            {
              "changes": [
                {
                  "at": "3.8.12",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "3.8.11",
              "status": "affected",
              "version": "3.8",
              "versionType": "semver"
            },
            {
              "changes": [
                {
                  "at": "3.9.7",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "3.9.6",
              "status": "affected",
              "version": "3.9",
              "versionType": "semver"
            },
            {
              "changes": [
                {
                  "at": "3.10.4",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "3.10.3",
              "status": "affected",
              "version": "3.10",
              "versionType": "semver"
            },
            {
              "changes": [
                {
                  "at": "3.11.1",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "3.11.0",
              "status": "affected",
              "version": "3.11",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "user": "00000000-0000-4000-9000-000000000000",
          "value": "inspector-ambitious"
        }
      ],
      "descriptions": [
        {
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          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "A race condition in GitHub Enterprise Server allows an outside collaborator to be added while a repository is being transferred. This vulnerability affected all versions of GitHub Enterprise Server since 3.8 and was fixed in version 3.8.12, 3.9.7, 3.10.4, and 3.11.1. \u003cbr\u003e"
            }
          ],
          "value": "A race condition in GitHub Enterprise Server allows an outside collaborator to be added while a repository is being transferred. This vulnerability affected all versions of GitHub Enterprise Server since 3.8 and was fixed in version 3.8.12, 3.9.7, 3.10.4, and 3.11.1. \n"
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-29",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-29 Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 5.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-367",
              "description": "CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition",
              "lang": "en",
              "type": "CWE"
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          ]
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      "providerMetadata": {
        "dateUpdated": "2023-12-21T20:45:27.233Z",
        "orgId": "82327ea3-741d-41e4-88f8-2cf9e791e760",
        "shortName": "GitHub_P"
      },
      "references": [
        {
          "url": "https://docs.github.com/en/enterprise-server@3.8/admin/release-notes#3.8.12"
        },
        {
          "url": "https://docs.github.com/en/enterprise-server@3.9/admin/release-notes#3.9.7"
        },
        {
          "url": "https://docs.github.com/en/enterprise-server@3.10/admin/release-notes#3.10.4"
        },
        {
          "url": "https://docs.github.com/en/enterprise-server@3.11/admin/release-notes#3.11.1"
        }
      ],
      "source": {
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    "datePublished": "2023-12-21T20:45:27.233Z",
    "dateReserved": "2023-12-13T19:26:45.922Z",
    "dateUpdated": "2024-08-02T08:42:07.752Z",
    "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.

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

Related by attack behaviour

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

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FKIE_CVE-2023-6803

CVE-2023-6803 (GCVE-0-2023-6803)

Tags

Sightings

Nomenclature

Related by attack behaviour