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CVE-2008-4996

Estado: ModificadaMedia (5.5)—

** DISPUTADA ** init en initramfs-tools v0.92f permite a usuarios locales sobrescribir ficheros de su elección a través de un ataque de enlace simbólico al fichero temporal /tmp/initramfs.debug. NOTA: El fabricante ha diputado esta vulnerabilidad, manteniendo que "init es usado en un contexto de monousuario; no existe la posibilidad de hacer esto explotable".

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)

Debian — Initramfs-tools

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2008-4996",
  "cveTags": [
    {
      "tags": [
        "disputed"
      ],
      "sourceIdentifier": "cve@mitre.org"
    }
  ],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2008-4996",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-04-18T15:21:37.616515Z"
        }
      }
    ],
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.9,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.4,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2008-11-07T19:36:23.963",
  "references": [
    {
      "url": "http://bugs.debian.org/496386",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://dev.gentoo.org/~rbu/security/debiantemp/initramfs-tools",
      "tags": [
        "Exploit"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2008/10/30/2",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://bugs.gentoo.org/show_bug.cgi?id=235770",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://bugs.debian.org/496386",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://dev.gentoo.org/~rbu/security/debiantemp/initramfs-tools",
      "tags": [
        "Exploit"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2008/10/30/2",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugs.gentoo.org/show_bug.cgi?id=235770",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-59"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-59"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "init in initramfs-tools 0.92f allows local users to overwrite arbitrary files via a symlink attack on the /tmp/initramfs.debug temporary file.  NOTE: the vendor disputes this vulnerability, stating that \"init is [used in] a single-user context; there's no possibility that this is exploitable."
    },
    {
      "lang": "es",
      "value": "** DISPUTADA ** init en initramfs-tools v0.92f permite a usuarios locales sobrescribir ficheros de su elección a través de un ataque de enlace simbólico al fichero temporal /tmp/initramfs.debug. NOTA: El fabricante ha diputado esta vulnerabilidad, manteniendo que \"init es usado en un contexto de monousuario; no existe la posibilidad de hacer esto explotable\"."
    }
  ],
  "lastModified": "2026-06-16T22:58:54.787",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:debian:initramfs-tools:0.92f:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "57E97BA9-A2F3-4969-A092-90648E31787A"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}