fkie_cve-2021-22862
Vulnerability from fkie_nvd
Published
2021-03-03 04:15
Modified
2024-11-21 05:50
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Summary
An improper access control vulnerability was identified in GitHub Enterprise Server that allowed an authenticated user with the ability to fork a repository to disclose Actions secrets for the parent repository of the fork. This vulnerability existed due to a flaw that allowed the base reference of a pull request to be updated to point to an arbitrary SHA or another pull request outside of the fork repository. By establishing this incorrect reference in a PR, the restrictions that limit the Actions secrets sent a workflow from forks could be bypassed. This vulnerability affected GitHub Enterprise Server version 3.0.0, 3.0.0.rc2, and 3.0.0.rc1. This vulnerability was reported via the GitHub Bug Bounty program.
References
product-cna@github.comhttps://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.1
af854a3a-2127-422b-91ae-364da2661108https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.1
Impacted products
Vendor Product Version
github github 3.0.0
github github 3.0.0
github github 3.0.0


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:a:github:github:3.0.0:-:*:*:*:*:*:*",
                     matchCriteriaId: "61ABB5BF-C578-403B-8EF9-A28274F486FF",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:github:github:3.0.0:rc1:*:*:*:*:*:*",
                     matchCriteriaId: "634A0A6C-0F17-4DE2-B2D1-C3B0C5C8EDD6",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:github:github:3.0.0:rc2:*:*:*:*:*:*",
                     matchCriteriaId: "0FA74C51-5AB4-4B23-B24B-5629736B17E1",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
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   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "An improper access control vulnerability was identified in GitHub Enterprise Server that allowed an authenticated user with the ability to fork a repository to disclose Actions secrets for the parent repository of the fork. This vulnerability existed due to a flaw that allowed the base reference of a pull request to be updated to point to an arbitrary SHA or another pull request outside of the fork repository. By establishing this incorrect reference in a PR, the restrictions that limit the Actions secrets sent a workflow from forks could be bypassed. This vulnerability affected GitHub Enterprise Server version 3.0.0, 3.0.0.rc2, and 3.0.0.rc1. This vulnerability was reported via the GitHub Bug Bounty program.",
      },
      {
         lang: "es",
         value: "Se identificó una vulnerabilidad de control de acceso inadecuada en GitHub Enterprise Server que permitía a un usuario autenticado con la capacidad de bifurcar un repositorio revelar los secretos de las acciones para el repositorio padre de la bifurcación. Esta vulnerabilidad existía debido a un fallo que permitía actualizar la referencia base de un pull request para que apuntara a un SHA arbitrario o a otro pull request fuera del repositorio fork. Al establecer esta referencia incorrecta en un PR, las restricciones que limitan las Acciones secretas enviadas a un flujo de trabajo desde los forks podían ser eludidas. Esta vulnerabilidad afectaba a las versiones 3.0.0, 3.0.0.rc2 y 3.0.0.rc1 de GitHub Enterprise Server. Esta vulnerabilidad fue reportada a través del programa GitHub Bug Bounty",
      },
   ],
   id: "CVE-2021-22862",
   lastModified: "2024-11-21T05:50:47.250",
   metrics: {
      cvssMetricV2: [
         {
            acInsufInfo: false,
            baseSeverity: "MEDIUM",
            cvssData: {
               accessComplexity: "LOW",
               accessVector: "NETWORK",
               authentication: "SINGLE",
               availabilityImpact: "NONE",
               baseScore: 4,
               confidentialityImpact: "PARTIAL",
               integrityImpact: "NONE",
               vectorString: "AV:N/AC:L/Au:S/C:P/I:N/A:N",
               version: "2.0",
            },
            exploitabilityScore: 8,
            impactScore: 2.9,
            obtainAllPrivilege: false,
            obtainOtherPrivilege: false,
            obtainUserPrivilege: false,
            source: "nvd@nist.gov",
            type: "Primary",
            userInteractionRequired: false,
         },
      ],
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "NETWORK",
               availabilityImpact: "NONE",
               baseScore: 6.5,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "HIGH",
               integrityImpact: "NONE",
               privilegesRequired: "LOW",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
               version: "3.1",
            },
            exploitabilityScore: 2.8,
            impactScore: 3.6,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2021-03-03T04:15:13.163",
   references: [
      {
         source: "product-cna@github.com",
         url: "https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.1",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.1",
      },
   ],
   sourceIdentifier: "product-cna@github.com",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-285",
            },
         ],
         source: "product-cna@github.com",
         type: "Secondary",
      },
      {
         description: [
            {
               lang: "en",
               value: "NVD-CWE-Other",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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