CVE-2008-0891

Estado: ModificadaMedia (4.3)—
Double free vulnerability in OpenSSL 0.9.8f and 0.9.8g, when the TLS server name extensions are enabled, allows remote attackers to cause a denial of service (crash) via a malformed Client Hello packet. NOTE: some of these details are obtained from third party information.
CVSS

Versión: 2.0
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
Puntuación base: 4.3
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 4.23%
Percentil entre todas las CVEs puntuadas: 91
Fecha de la puntuación: 7/10/2026
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)

Openssl — Openssl
CWE

CWE-189
Referencias

JSON original (NVD)

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{
  "id": "CVE-2008-0891",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "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": "2008-05-29T16:32:00.000",
  "references": [
    {
      "url": "http://cert.fi/haavoittuvuudet/2008/advisory-openssl.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/30405",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/30460",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/30825",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/30852",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/30868",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/31228",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/31288",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://security.gentoo.org/glsa/glsa-200806-08.xml",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://slackware.com/security/viewer.php?l=slackware-security&y=2008&m=slackware-security.562004",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://sourceforge.net/project/shownotes.php?release_id=615606",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=738400",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.kb.cert.org/vuls/id/661475",
      "tags": [
        "US Government Resource"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2008:107",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.openssl.org/news/secadv_20080528.txt",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/29405",
      "tags": [
        "Patch"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securitytracker.com/id?1020121",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.ubuntu.com/usn/usn-620-1",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2008/1680",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2008/1937/references",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/42666",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://www.redhat.com/archives/fedora-package-announce/2008-May/msg01029.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://cert.fi/haavoittuvuudet/2008/advisory-openssl.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://secunia.com/advisories/30405",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/30460",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://secunia.com/advisories/30825",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/30852",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/30868",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/31228",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/31288",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://security.gentoo.org/glsa/glsa-200806-08.xml",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://slackware.com/security/viewer.php?l=slackware-security&y=2008&m=slackware-security.562004",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://sourceforge.net/project/shownotes.php?release_id=615606",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=738400",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.kb.cert.org/vuls/id/661475",
      "tags": [
        "US Government Resource"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2008:107",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openssl.org/news/secadv_20080528.txt",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/29405",
      "tags": [
        "Patch"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://www.securitytracker.com/id?1020121",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://www.ubuntu.com/usn/usn-620-1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2008/1680",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2008/1937/references",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/42666",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.redhat.com/archives/fedora-package-announce/2008-May/msg01029.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-189"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Double free vulnerability in OpenSSL 0.9.8f and 0.9.8g, when the TLS server name extensions are enabled, allows remote attackers to cause a denial of service (crash) via a malformed Client Hello packet.  NOTE: some of these details are obtained from third party information."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de doble liberación en OpenSSL 0.9.8f y 0.9.8g, cuando las extensiones de nombre de servidor TLS están habilitadas, permite a atacantes remotos provocar una denegación de servicio (caída) a través de un paquete manipulado. NOTA: Algunos de estos detalles se han obtenido de fuentes de terceros."
    }
  ],
  "lastModified": "2026-06-16T22:50:33.103",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:openssl:openssl:0.9.8f:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2BB38AEA-BAF0-4920-9A71-747C24444770"
            },
            {
              "criteria": "cpe:2.3:a:openssl:openssl:0.9.8g:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1F33EA2B-DE15-4695-A383-7A337AC38908"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "vendorComments": [
    {
      "comment": "Not vulnerable. This issue did not affect the versions of OpenSSL as shipped with Red Hat Enterprise Linux 2.1, 3, 4, or 5.",
      "lastModified": "2008-05-30T00:00:00",
      "organization": "Red Hat"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}