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CVE-2010-2547

Estado: ModificadaAlta (8.1)—

Vulnerabilidad de uso después de la liberación (use-after-free) en kbx/keybox-blob.c en GPGSM de GnuPG v2.x hasta v2.0.16 permite a atacantes remotos causar una denegación de servicio (caída del sistema) y posiblemente ejecutar código de su elección mediante un certificado con un gran número de Subject Alternate Names, que no es manejado de forma adecuada en una operación realloc cuando se importa el certificado o se verifica su firma.

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 (3)

Debian — Debian LinuxFedoraproject — FedoraGnupg — Gnupg

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2010-2547",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5.1,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "HIGH",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 4.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2010-08-05T18:17:57.243",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use-after-free vulnerability in kbx/keybox-blob.c in GPGSM in GnuPG 2.x through 2.0.16 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a certificate with a large number of Subject Alternate Names, which is not properly handled in a realloc operation when importing the certificate or verifying its signature."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de uso después de la liberación (use-after-free) en kbx/keybox-blob.c en GPGSM de GnuPG v2.x hasta v2.0.16 permite a atacantes remotos causar una denegación de servicio (caída del sistema) y posiblemente ejecutar código de su elección mediante un certificado con un gran número de Subject Alternate Names, que no es manejado de forma adecuada en una operación realloc cuando se importa el certificado o se verifica su firma."
    }
  ],
  "lastModified": "2026-06-16T23:20:57.693",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gnupg:gnupg:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9A6E093F-B054-46B5-92A3-B106E784F30E",
              "versionEndIncluding": "2.0.16",
              "versionStartIncluding": "2.0.0"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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            }
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          "operator": "OR"
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            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "evaluatorImpact": "Per: http://lists.gnupg.org/pipermail/gnupg-announce/2010q3/000302.html\n\n'GnuPG 1.x is NOT affected because it does not come with the GPGSM\ntool.'",
  "sourceIdentifier": "secalert@redhat.com"
}