fkie_cve-2021-21237
Vulnerability from fkie_nvd
Published
2021-01-15 18:15
Modified
2024-11-21 05:47
Severity ?
7.2 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
Git LFS is a command line extension for managing large files with Git. On Windows, if Git LFS operates on a malicious repository with a git.bat or git.exe file in the current directory, that program would be executed, permitting the attacker to execute arbitrary code. This does not affect Unix systems. This is the result of an incomplete fix for CVE-2020-27955. This issue occurs because on Windows, Go includes (and prefers) the current directory when the name of a command run does not contain a directory separator. Other than avoiding untrusted repositories or using a different operating system, there is no workaround. This is fixed in v2.13.2.
References
security-advisories@github.comhttps://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27955Third Party Advisory
security-advisories@github.comhttps://github.com/git-lfs/git-lfs/commit/fc664697ed2c2081ee9633010de0a7f9debea72aPatch, Third Party Advisory
security-advisories@github.comhttps://github.com/git-lfs/git-lfs/releases/tag/v2.13.2Third Party Advisory
security-advisories@github.comhttps://github.com/git-lfs/git-lfs/security/advisories/GHSA-cx3w-xqmc-84g5Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27955Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/git-lfs/git-lfs/commit/fc664697ed2c2081ee9633010de0a7f9debea72aPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/git-lfs/git-lfs/releases/tag/v2.13.2Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/git-lfs/git-lfs/security/advisories/GHSA-cx3w-xqmc-84g5Third Party Advisory
Impacted products
Vendor Product Version
git_large_file_storage_project git_large_file_storage *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:git_large_file_storage_project:git_large_file_storage:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "ED5A8512-DFF5-4912-9924-FE6C511D14A5",
              "versionEndExcluding": "2.13.2",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Git LFS is a command line extension for managing large files with Git. On Windows, if Git LFS operates on a malicious repository with a git.bat or git.exe file in the current directory, that program would be executed, permitting the attacker to execute arbitrary code. This does not affect Unix systems. This is the result of an incomplete fix for CVE-2020-27955. This issue occurs because on Windows, Go includes (and prefers) the current directory when the name of a command run does not contain a directory separator. Other than avoiding untrusted repositories or using a different operating system, there is no workaround. This is fixed in v2.13.2."
    },
    {
      "lang": "es",
      "value": "Git LFS es una extensi\u00f3n de l\u00ednea de comandos para administrar archivos grandes con Git.\u0026#xa0;En Windows, si Git LFS opera en un repositorio malicioso con un archivo git.bat o git.exe en el directorio actual, ese programa ser\u00e1 ejecutado, permitiendo al atacante ejecutar c\u00f3digo arbitrario.\u0026#xa0;Esto no afecta a los sistemas Unix.\u0026#xa0;Este es el resultado de una correcci\u00f3n incompleta para CVE-2020-27955.\u0026#xa0;Este problema ocurre porque en Windows, Go incluye (y prefiere) el directorio actual cuando el nombre de un comando ejecutado no contiene un separador de directorio.\u0026#xa0;Aparte de evitar los repositorios que no son confiables o usando un sistema operativo diferente, no se presenta una soluci\u00f3n alternativa.\u0026#xa0;Esto es corregido en versi\u00f3n v2.13.2"
    }
  ],
  "id": "CVE-2021-21237",
  "lastModified": "2024-11-21T05:47:50.287",
  "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": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 0.8,
        "impactScore": 5.8,
        "source": "security-advisories@github.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": "Primary"
      }
    ]
  },
  "published": "2021-01-15T18:15:15.980",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27955"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/git-lfs/git-lfs/commit/fc664697ed2c2081ee9633010de0a7f9debea72a"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/git-lfs/git-lfs/releases/tag/v2.13.2"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/git-lfs/git-lfs/security/advisories/GHSA-cx3w-xqmc-84g5"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27955"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/git-lfs/git-lfs/commit/fc664697ed2c2081ee9633010de0a7f9debea72a"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/git-lfs/git-lfs/releases/tag/v2.13.2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/git-lfs/git-lfs/security/advisories/GHSA-cx3w-xqmc-84g5"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-426"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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