{
  "id": "CVE-2017-11171",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2017-07-11T20:29:00.267",
  "lastModified": "2019-10-03T00:03:26.223",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "Bad reference counting in the context of accept_ice_connection() in gsm-xsmp-server.c in old versions of gnome-session up until version 2.29.92 allows a local attacker to establish ICE connections to gnome-session with invalid authentication data (an invalid magic cookie). Each failed authentication attempt will leak a file descriptor in gnome-session. When the maximum number of file descriptors is exhausted in the gnome-session process, it will enter an infinite loop trying to communicate without success, consuming 100% of the CPU. The graphical session associated with the gnome-session process will stop working correctly, because communication with gnome-session is no longer possible."
    },
    {
      "lang": "es",
      "value": "Un mal conteo de referencias en el contexto de la funci\u00f3n accept_ice_connection() en el archivo gsm-xsmp-server.c en versiones anteriores de gnome-session hasta la versi\u00f3n 2.29.92, permite a un atacante local establecer conexiones ICE en gnome-session con datos de autenticaci\u00f3n no v\u00e1lidos (cookie magic no v\u00e1lida). Cada intento de autenticaci\u00f3n fallido filtrar\u00e1 un descriptor de archivo en gnome-session. Cuando se agote el n\u00famero m\u00e1ximo de descriptores de archivo en el proceso de gnome-session, entrar\u00e1 en un bucle infinito intentando comunicarse sin \u00e9xito, consumiendo el 100% de la CPU. La sesi\u00f3n gr\u00e1fica asociada con el proceso de gnome-session dejar\u00e1 de funcionar correctamente, porque ya no es posible la comunicaci\u00f3n con gnome-session."
    }
  ],
  "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:N/A:H",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "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:N/A:C",
          "accessVector": "LOCAL",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 4.9
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 3.9,
        "impactScore": 6.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:gnome:gnome-session:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "2.29.92",
              "matchCriteriaId": "71BA08C3-D836-4FB1-98D3-1F31FEE15C77"
            }
          ]
        }
      ]
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  ],
  "references": [
    {
      "url": "https://bugzilla.suse.com/show_bug.cgi?id=1025068",
      "source": "cve@mitre.org",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/GNOME/gnome-session/commit/b0dc999e0b45355314616321dbb6cb71e729fc9d",
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ]
    }
  ]
}