Vulnerability-Lookup

GHSA-X87G-4C45-MVV5

Vulnerability from github – Published: 2022-05-24 17:43 – Updated: 2022-10-25 19:00

Details

An improper access control vulnerability was identified in GitHub Enterprise Server that allowed authenticated users of the instance to gain write access to unauthorized repositories via specifically crafted pull requests and REST API requests. An attacker would need to be able to fork the targeted repository, a setting that is disabled by default for organization owned private repositories. Branch protections such as required pull request reviews or status checks would prevent unauthorized commits from being merged without further review or validation. This vulnerability affected all versions of GitHub Enterprise Server since 2.4.21 and was fixed in versions 2.20.24, 2.21.15, 2.22.7 and 3.0.1. This vulnerability was reported via the GitHub Bug Bounty program.

Severity ?

6.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2021-22861"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-03-03T04:15:00Z",
    "severity": "MODERATE"
  },
  "details": "An improper access control vulnerability was identified in GitHub Enterprise Server that allowed authenticated users of the instance to gain write access to unauthorized repositories via specifically crafted pull requests and REST API requests. An attacker would need to be able to fork the targeted repository, a setting that is disabled by default for organization owned private repositories. Branch protections such as required pull request reviews or status checks would prevent unauthorized commits from being merged without further review or validation. This vulnerability affected all versions of GitHub Enterprise Server since 2.4.21 and was fixed in versions 2.20.24, 2.21.15, 2.22.7 and 3.0.1. This vulnerability was reported via the GitHub Bug Bounty program.",
  "id": "GHSA-x87g-4c45-mvv5",
  "modified": "2022-10-25T19:00:36Z",
  "published": "2022-05-24T17:43:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-22861"
    },
    {
      "type": "WEB",
      "url": "https://docs.github.com/en/enterprise-server@2.20/admin/release-notes#2.20.24"
    },
    {
      "type": "WEB",
      "url": "https://docs.github.com/en/enterprise-server@2.21/admin/release-notes#2.21.15"
    },
    {
      "type": "WEB",
      "url": "https://docs.github.com/en/enterprise-server@2.22/admin/release-notes#2.22.7"
    },
    {
      "type": "WEB",
      "url": "https://docs.github.com/en/enterprise-server@3.0/admin/release-notes#3.0.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-22861 (GCVE-0-2021-22861)

Vulnerability from cvelistv5 – Published: 2021-03-03 03:25 – Updated: 2024-08-03 18:51

Title

Improper access control in GitHub Enterprise Server leading to unauthorized write access to forkable repositories

Summary

Severity ?

No CVSS data available.

CWE

CWE-285 - Improper Authorization

Assigner

GitHub_P

References

URL

Tags

	https://docs.github.com/en/enterprise-server%402.…	x_refsource_MISC
	https://docs.github.com/en/enterprise-server%402.…	x_refsource_MISC
	https://docs.github.com/en/enterprise-server%402.…	x_refsource_MISC
	https://docs.github.com/en/enterprise-server%403.…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	GitHub	GitHub Enterprise Server	Affected: 2.20 , < 2.20.24 (custom) Affected: 2.21 , < 2.21.15 (custom) Affected: 2.22 , < 2.22.7 (custom) Affected: 3.0 , < 3.0.1 (custom)

Credits

Teddy Katz

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

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

GHSA-X87G-4C45-MVV5

CVE-2021-22861 (GCVE-0-2021-22861)

Tags

Sightings

Nomenclature