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CVE-2017-15131

Estado: ModificadaAlta (7.8)—

Se ha descubierto que no se respeta la política system umask cuando se crean directorios de usuarios XDG, ya que Xsession obtiene xdg-user-dirs.sh antes de establecer la política umask. Esto solo afecta a xdg-user-dirs en versiones anteriores a la 0.15.5, tal y como se incluye en Red Hat Enterprise Linux.

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)

Freedesktop — Xdg-user-dirsRedhat — Enterprise Linux

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2017-15131",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.6,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/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": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "Red Hat, Inc.",
          "product": "RHEL shipped xdg-user-dirs and gnome-session",
          "versions": [
            {
              "status": "affected",
              "version": "before 0.15-5"
            }
          ]
        }
      ]
    }
  ],
  "published": "2018-01-09T21:29:00.373",
  "references": [
    {
      "url": "https://access.redhat.com/errata/RHSA-2018:0842",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1412762",
      "tags": [
        "Issue Tracking"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2018:0842",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1412762",
      "tags": [
        "Issue Tracking"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-276"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "It was found that system umask policy is not being honored when creating XDG user directories, since Xsession sources xdg-user-dirs.sh before setting umask policy. This only affects xdg-user-dirs before 0.15.5 as shipped with Red Hat Enterprise Linux."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto que no se respeta la política system umask cuando se crean directorios de usuarios XDG, ya que Xsession obtiene xdg-user-dirs.sh antes de establecer la política umask. Esto solo afecta a xdg-user-dirs en versiones anteriores a la 0.15.5, tal y como se incluye en Red Hat Enterprise Linux."
    }
  ],
  "lastModified": "2026-06-17T01:07:18.300",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:freedesktop:xdg-user-dirs:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3702E1DD-0423-4313-A273-2324472BFB20",
              "versionEndExcluding": "0.15.5"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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            }
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          "operator": "OR"
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  "sourceIdentifier": "secalert@redhat.com"
}