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CVE-2007-5939

Estado: ModificadaAlta (10)—

The gss_userok function in appl/ftp/ftpd/gss_userok.c in Heimdal 0.7.2 does not allocate memory for the ticketfile pointer before calling free, which allows remote attackers to have an unknown impact via an invalid username. NOTE: the vulnerability was originally reported for ftpd.c, but this is incorrect.

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)

Heimdal — Heimdal

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2007-5939",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 10,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": true,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2007-12-06T15:46:00.000",
  "references": [
    {
      "url": "http://bugs.gentoo.org/show_bug.cgi?id=199207",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://marc.info/?l=full-disclosure&m=119704362903699&w=2",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://osvdb.org/44750",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://securitytracker.com/id?1019057",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDKSA-2007:239",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/26758",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://bugs.gentoo.org/show_bug.cgi?id=199207",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://marc.info/?l=full-disclosure&m=119704362903699&w=2",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://osvdb.org/44750",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://securitytracker.com/id?1019057",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDKSA-2007:239",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/26758",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The gss_userok function in appl/ftp/ftpd/gss_userok.c in Heimdal 0.7.2 does not allocate memory for the ticketfile pointer before calling free, which allows remote attackers to have an unknown impact via an invalid username.  NOTE: the vulnerability was originally reported for ftpd.c, but this is incorrect."
    },
    {
      "lang": "es",
      "value": "La función gss_userok de appl/ftp/ftpd/gss_userok.c en Heimdal 0.7.2 no reserva memoria para el puntero ticketfile antes de llamar a la función free, lo cual permite a atacantes remotos tener impacto desconocido mediante un nombre de usuario inválido. NOTA: la vulnerabilidad fue originalmente reportada para ftpd.c, pero esto es incorrecto."
    }
  ],
  "lastModified": "2026-06-16T22:47:04.887",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:heimdal:heimdal:0.7.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6AEE0CCA-5935-472D-8A73-301A89412E09"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}