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CVE-2009-1273

Estado: ModificadaMedia (5)—

pam_ssh 1.92 and possibly other versions, as used when PAM is compiled with USE=ssh, generates different error messages depending on whether the username is valid or invalid, which makes it easier for remote attackers to enumerate usernames.

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)

Andrew J.korty — PAM SSH

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2009-1273",
  "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:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "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": "2009-04-08T18:30:00.233",
  "references": [
    {
      "url": "http://bugs.gentoo.org/show_bug.cgi?id=263579",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/34536",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/34986",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00116.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00145.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://bugs.gentoo.org/show_bug.cgi?id=263579",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/34536",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/34986",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00116.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00145.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-255"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "pam_ssh 1.92 and possibly other versions, as used when PAM is compiled with USE=ssh, generates different error messages depending on whether the username is valid or invalid, which makes it easier for remote attackers to enumerate usernames."
    },
    {
      "lang": "es",
      "value": "pam_ssh v1.92 y posiblemente otras versiones, como las usadas cuando PAM se compila con USE=ssh, genera diferentes mensajes de error dependiendo de cuando el nombre de usuario es válido o inválido, lo que hace más fácil a atacantes remotos enumerar los nombres de usuarios."
    }
  ],
  "lastModified": "2026-06-16T23:06:55.140",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:andrew_j.korty:pam_ssh:1.92:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "73F34D9E-CBD9-4BB2-BEDC-BB536241CA2C"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}