{
  "id": "CVE-2015-8777",
  "sourceIdentifier": "secalert@redhat.com",
  "published": "2016-01-20T05:59:01.237",
  "lastModified": "2018-01-05T02:30:21.430",
  "vulnStatus": "Modified",
  "descriptions": [
    {
      "lang": "en",
      "value": "The process_envvars function in elf/rtld.c in the GNU C Library (aka glibc or libc6) before 2.23 allows local users to bypass a pointer-guarding protection mechanism via a zero value of the LD_POINTER_GUARD environment variable."
    },
    {
      "lang": "es",
      "value": "La funci\u00f3n process_envvars en elf/rtld.c en la GNU C Library (tambi\u00e9n conocida como glibc o libc6) en versiones anteriores a 2.23 permite a usuarios locales eludir un mecanismo de protecci\u00f3n de puntero a trav\u00e9s de un valor cero de la variable de entorno LD_POINTER_GUARD."
    }
  ],
  "metrics": {
    "cvssMetricV30": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.0",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:N",
          "accessVector": "LOCAL",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "NONE",
          "baseScore": 2.1
        },
        "baseSeverity": "LOW",
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-254"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "2.22",
              "matchCriteriaId": "E1E32895-9C7B-4DE8-9BB5-0177406EB761"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "http://hmarco.org/bugs/glibc_ptr_mangle_weakness.html",
      "source": "secalert@redhat.com",
      "tags": [
        "Exploit"
      ]
    },
    {
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177404.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00036.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00037.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00038.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00039.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.debian.org/security/2016/dsa-3480",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2016/01/20/1",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/81469",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1034811",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.ubuntu.com/usn/USN-2985-1",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.ubuntu.com/usn/USN-2985-2",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2017:1916",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://security.gentoo.org/glsa/201702-11",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=18928",
      "source": "secalert@redhat.com"
    }
  ]
}