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CVE-2007-0844

Estado: ModificadaMedia (6.4)—

The auth_via_key function in pam_ssh.c in pam_ssh before 1.92, when the allow_blank_passphrase option is disabled, allows remote attackers to bypass authentication restrictions and use private encryption keys requiring a blank passphrase by entering a non-blank passphrase.

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)

PAM SSH — PAM SSH

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2007-0844",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "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": "2007-02-08T17:28:00.000",
  "references": [
    {
      "url": "http://osvdb.org/33119",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/24061",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://sourceforge.net/project/shownotes.php?release_id=484376",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/22461",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/0524",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://osvdb.org/33119",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/24061",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://sourceforge.net/project/shownotes.php?release_id=484376",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/22461",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/0524",
      "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": "The auth_via_key function in pam_ssh.c in pam_ssh before 1.92, when the allow_blank_passphrase option is disabled, allows remote attackers to bypass authentication restrictions and use private encryption keys requiring a blank passphrase by entering a non-blank passphrase."
    },
    {
      "lang": "es",
      "value": "La función auth_via_key en pam_ssh.c de pam_ssh before 1.92, cuando la opción allow_blank_passphrase está deshabilitada, permite a atacantes remotos evitar restricciones de autenticación y utilizar claves de cifrado privadas requiriendo una cadena de contraseña en blanco, introduciendo una cadena de contraseña no en blanco."
    }
  ],
  "lastModified": "2026-06-16T22:36:24.040",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:pam_ssh:pam_ssh:1.91:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "52AE6E07-D0F0-4FD3-9762-325BF293C341"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}