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CVE-2013-4577

Estado: ModificadaBaja (2.1)—

A certain Debian patch for GNU GRUB uses world-readable permissions for grub.cfg, which allows local users to obtain password hashes, as demonstrated by reading the password_pbkdf2 directive in the file.

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 (1)

GNU — Grub

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2013-4577",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 2.1,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2014-05-12T14:55:05.023",
  "references": [
    {
      "url": "http://seclists.org/oss-sec/2013/q4/291",
      "tags": [
        "Patch"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://seclists.org/oss-sec/2013/q4/292",
      "tags": [
        "Patch"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2024/01/15/3",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=632598",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://seclists.org/oss-sec/2013/q4/291",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://seclists.org/oss-sec/2013/q4/292",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2024/01/15/3",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=632598",
      "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": "A certain Debian patch for GNU GRUB uses world-readable permissions for grub.cfg, which allows local users to obtain password hashes, as demonstrated by reading the password_pbkdf2 directive in the file."
    },
    {
      "lang": "es",
      "value": "Cierto parche de Debian para GNU GRUB utiliza permisos de lectura universal para grub.cfg, lo que permite a usuarios locales obtener hashes de contraseñas, tal y como fue demostrado mediante la lectura del directivo password_pbkdf2 en el archivo."
    }
  ],
  "lastModified": "2026-06-16T23:57:29.110",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gnu:grub:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CBA86F8C-A64F-4C08-B38F-05E5F743F0A0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}