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CVE-2006-4925

Estado: ModificadaMedia (5)—

packet.c in ssh in OpenSSH allows remote attackers to cause a denial of service (crash) by sending an invalid protocol sequence with USERAUTH_SUCCESS before NEWKEYS, which causes newkeys[mode] to be NULL.

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)

Openbsd — Openssh

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2006-4925",
  "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": "2006-09-29T00:07:00.000",
  "references": [
    {
      "url": "http://bugs.gentoo.org/show_bug.cgi?id=148228",
      "tags": [
        "Exploit",
        "Patch"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/22245",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/22298",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/22495",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/23038",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDKSA-2006:179",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.novell.com/linux/security/advisories/2006_24_sr.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.novell.com/linux/security/advisories/2006_62_openssh.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/packet.c.diff?r1=1.144&r2=1.145&f=h",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.openpkg.org/security/advisories/OpenPKG-SA-2006.022-openssh.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/447153/100/0/threaded",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/447861/100/200/threaded",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://issues.rpath.com/browse/RPL-661",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://issues.rpath.com/browse/RPL-681",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://bugs.gentoo.org/show_bug.cgi?id=148228",
      "tags": [
        "Exploit",
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/22245",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/22298",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/22495",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/23038",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDKSA-2006:179",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.novell.com/linux/security/advisories/2006_24_sr.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.novell.com/linux/security/advisories/2006_62_openssh.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/packet.c.diff?r1=1.144&r2=1.145&f=h",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openpkg.org/security/advisories/OpenPKG-SA-2006.022-openssh.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/447153/100/0/threaded",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/447861/100/200/threaded",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://issues.rpath.com/browse/RPL-661",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://issues.rpath.com/browse/RPL-681",
      "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": "packet.c in ssh in OpenSSH allows remote attackers to cause a denial of service (crash) by sending an invalid protocol sequence with USERAUTH_SUCCESS before NEWKEYS, which causes newkeys[mode] to be NULL."
    },
    {
      "lang": "es",
      "value": "packet.c en ssh en OpenSSH permite a atacantes remotos provocar una denegación de servicio (caída) mediante el envío de una secuencia de protocolo inválida con USERAUTH_SUCCESS antes de NEWKEYS, lo que provoca que newkeys[mode] sea nulo (NULL)."
    }
  ],
  "lastModified": "2026-06-16T22:30:09.057",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:openbsd:openssh:4.5:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9B72CFB3-39C7-469C-AA59-69F5B8993BF7"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "vendorComments": [
    {
      "comment": "Red Hat does not consider this flaw a security issue. This flaw can cause an OpenSSH client to crash when connecting to a malicious server, which does not result in a denial of service condition.",
      "lastModified": "2006-10-31T00:00:00",
      "organization": "Red Hat"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}