{
  "id": "CVE-2018-6558",
  "sourceIdentifier": "security@ubuntu.com",
  "published": "2018-08-23T19:29:01.127",
  "lastModified": "2019-10-03T00:03:26.223",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "The pam_fscrypt module in fscrypt before 0.2.4 may incorrectly restore primary and supplementary group IDs to the values associated with the root user, which allows attackers to gain privileges via a successful login through certain applications that use Linux-PAM (aka pam)."
    },
    {
      "lang": "es",
      "value": "El m\u00f3dulo pam_fscrypt en fscrypt en versiones anteriores a la 0.2.4 podr\u00eda restaurar incorrectamente los ID de los grupos primarios y suplementarios a los valores asociados con el usuario root, lo que permite que los atacantes obtengan privilegios mediante un inicio de sesi\u00f3n con \u00e9xito a trav\u00e9s de determinadas aplicaciones que utilicen Linux-PAM (tambi\u00e9n conocido como pam)."
    }
  ],
  "metrics": {
    "cvssMetricV30": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.0",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:P",
          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "SINGLE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.9
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 6.8,
        "impactScore": 4.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:google:fscrypt:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "0.2.4",
              "matchCriteriaId": "80891EB5-205B-4BB3-8BEA-589FD0B5CDB3"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/google/fscrypt/commit/3022c1603d968c22f147b4a2c49c4637dd1be91b",
      "source": "security@ubuntu.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/google/fscrypt/commit/315f9b042237200174a1fb99427f74027e191d66",
      "source": "security@ubuntu.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/google/fscrypt/issues/77",
      "source": "security@ubuntu.com",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://launchpad.net/bugs/1787548",
      "source": "security@ubuntu.com",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
      ]
    }
  ]
}