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CVE-2015-8768

Estado: ModificadaCrítica (9.8)—

click/install.py in click does not require files in package filesystem tarballs to start with ./ (dot slash), which allows remote attackers to install an alternate security policy and gain privileges via a crafted package, as demonstrated by the test.mmrow app for Ubuntu phone.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Canonical — Ubuntu LinuxClick Project — Click

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2015-8768",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2017-02-13T18:59:00.267",
  "references": [
    {
      "url": "http://bazaar.launchpad.net/~click-hackers/click/devel/revision/587",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://ubuntu.com/usn/usn-2771-1",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2016/01/12/8",
      "tags": [
        "Mailing List",
        "Patch",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/96386",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://bugs.launchpad.net/ubuntu/+source/click/+bug/1506467",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://code.launchpad.net/~cjwatson/click/audit-missing-dot-slash/+merge/274554",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://insights.ubuntu.com/2015/10/15/update-on-ubuntu-phone-security-issue/",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://plus.google.com/+SzymonWaliczek/posts/3jbG2uiAniF",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://bazaar.launchpad.net/~click-hackers/click/devel/revision/587",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://ubuntu.com/usn/usn-2771-1",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2016/01/12/8",
      "tags": [
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        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/96386",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugs.launchpad.net/ubuntu/+source/click/+bug/1506467",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://code.launchpad.net/~cjwatson/click/audit-missing-dot-slash/+merge/274554",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://insights.ubuntu.com/2015/10/15/update-on-ubuntu-phone-security-issue/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://plus.google.com/+SzymonWaliczek/posts/3jbG2uiAniF",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-264"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "click/install.py in click does not require files in package filesystem tarballs to start with ./ (dot slash), which allows remote attackers to install an alternate security policy and gain privileges via a crafted package, as demonstrated by the test.mmrow app for Ubuntu phone."
    },
    {
      "lang": "es",
      "value": "El archivo click/install.py en click no requiere archivos en el sistema de archivos del paquete tarballs para iniciar con ./ (punto barra), lo que permite a los atacantes remotos instalar una política de seguridad alternativa y alcanzar privilegios por medio de un paquete diseñado, como es demostrado por la aplicación test.mmrow para el teléfono Ubuntu."
    }
  ],
  "lastModified": "2026-06-17T00:35:12.473",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:click_project:click:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B43706BE-E042-43AF-85B7-1AC24D5226F3"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F38D3B7E-8429-473F-BB31-FC3583EE5A5B"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}