CVE-2020-27833

{
  "id": "CVE-2020-27833",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.6,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:S/C:P/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "HIGH",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.2
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "openshift/oc",
          "versions": [
            {
              "status": "affected",
              "version": "up to & including openshift-clients-4.7.0-202104250659.p0.git.95881af"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-05-14T21:15:07.363",
  "references": [
    {
      "url": "https://access.redhat.com/security/cve/CVE-2020-27833",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1905945",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/security/cve/CVE-2020-27833",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1905945",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-59"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A Zip Slip vulnerability was found in the oc binary in openshift-clients where an arbitrary file write is achieved by using a specially crafted raw container image (.tar file) which contains symbolic links. The vulnerability is limited to the command `oc image extract`. If a symbolic link is first created pointing within the tarball, this allows further symbolic links to bypass the existing path check. This flaw allows the tarball to create links outside the tarball's parent directory, allowing for executables or configuration files to be overwritten, resulting in arbitrary code execution. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Versions up to and including openshift-clients-4.7.0-202104250659.p0.git.95881af are affected."
    },
    {
      "lang": "es",
      "value": "Se encontró una vulnerabilidad Zip Slip en el binario oc en openshift-clients donde es logrado una escritura de archivo arbitraria mediante el uso de una imagen de contenedor sin procesar especialmente diseñada (archivo .tar) que contiene enlaces simbólicos. La vulnerabilidad es limitada al comando \"oc image extract\". Si primero es creado un enlace simbólico apuntando dentro del tarball, esto permite a otros enlaces simbólicos omitir una comprobación de ruta existente. Este fallo permite al tarball crear enlaces fuera del directorio principal del tarball, permitiendo a archivos ejecutables o de configuración ser sobreescritos, resultando en una ejecución de código arbitrario. La mayor amenaza de esta vulnerabilidad es la confidencialidad, la integridad y la disponibilidad del sistema. Las versiones hasta e incluyendo openshift-clients-4.7.0-202104250659.p0.git.95881af están afectadas"
    }
  ],
  "lastModified": "2026-06-17T03:09:42.433",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:redhat:openshift_container_platform:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DF0109AC-4705-4F5B-8436-8B7C76BD4C37",
              "versionEndIncluding": "4.7"
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          ],
          "operator": "OR"
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  ],
  "sourceIdentifier": "secalert@redhat.com"
}