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CVE-2007-2028

Status: ModifiedMedium (5)—

Memory leak in freeRADIUS 1.1.5 and earlier allows remote attackers to cause a denial of service (memory consumption) via a large number of EAP-TTLS tunnel connections using malformed Diameter format attributes, which causes the authentication request to be rejected but does not reclaim VALUE_PAIR data structures.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Freeradius — Freeradius

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2007-2028",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "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": "2007-04-13T18:19:00.000",
  "references": [
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2007-0338.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/24849",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/24907",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/24917",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/24996",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/25201",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/25220",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://security.gentoo.org/glsa/glsa-200704-14.xml",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.freeradius.org/security.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDKSA-2007:085",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.novell.com/linux/security/advisories/2007_10_sr.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/23466",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securitytracker.com/id?1018042",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.trustix.org/errata/2007/0013/",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/1369",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11156",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2007-0338.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/24849",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/24907",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/24917",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/24996",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/25201",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/25220",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://security.gentoo.org/glsa/glsa-200704-14.xml",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.freeradius.org/security.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDKSA-2007:085",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.novell.com/linux/security/advisories/2007_10_sr.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/23466",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id?1018042",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.trustix.org/errata/2007/0013/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/1369",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11156",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Memory leak in freeRADIUS 1.1.5 and earlier allows remote attackers to cause a denial of service (memory consumption) via a large number of EAP-TTLS tunnel connections using malformed Diameter format attributes, which causes the authentication request to be rejected but does not reclaim VALUE_PAIR data structures."
    },
    {
      "lang": "es",
      "value": "Filtración de memoria en freeRADIUS 1.1.5 y anteriores permite a atacantes remotos provocar denegación de servicio (consumo de memoria) a través de un gran número de conexiones de tunel de EAP-TTLS utilizando atributos de formato mal formado de Diameter, lo cual hace que la respuesta de validación sea rechazada pero no recupera la estructura de datos VALUE_PAIR."
    }
  ],
  "lastModified": "2026-06-16T22:38:46.743",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:freeradius:freeradius:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D9C422CB-4D04-43F5-A10C-CD5B216E6D28",
              "versionEndIncluding": "1.1.5"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}