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CVE-2003-0896

Estado: ModificadaAlta (7.5)—💥 Exploit

El método loadClass de la clase sun.applet.AppletClassLoader en la Máquina Virtual de Java (JVM) en Sun SDK y JRE 1.4.1_03 y anteriores permite a atacantes remotos saltarles las restricciones del cajón de arena de Java y ejecutar código mediante una clase cargada que contenga caractéres "/" (barra) en lugar de "." punto, lo que evita la llamada al método del Adminstrador de Seguridad checkPackageAccess.

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).

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

Tecnologías afectadas (1)

SUN — JRE

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2003-0896",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": true,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2003-11-17T05:00:00.000",
  "references": [
    {
      "url": "http://lsd-pl.net/code/JVM/jre.tar.gz",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://marc.info/?l=bugtraq&m=106692334503819&w=2",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert/57221",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://sunsolve.sun.com/search/document.do?assetkey=1-66-200356-1",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/advisories/6028",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/342580",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/342583",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/8879",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://lsd-pl.net/code/JVM/jre.tar.gz",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://marc.info/?l=bugtraq&m=106692334503819&w=2",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert/57221",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://sunsolve.sun.com/search/document.do?assetkey=1-66-200356-1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/advisories/6028",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/342580",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/342583",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/8879",
      "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 loadClass method of the sun.applet.AppletClassLoader class in the Java Virtual Machine (JVM) in Sun SDK and JRE 1.4.1_03 and earlier allows remote attackers to bypass sandbox restrictions and execute arbitrary code via a loaded class name that contains \"/\" (slash) instead of \".\" (dot) characters, which bypasses a call to the Security Manager's checkPackageAccess method."
    },
    {
      "lang": "es",
      "value": "El método loadClass de la clase sun.applet.AppletClassLoader en la Máquina Virtual de Java (JVM) en Sun SDK y JRE 1.4.1_03 y anteriores permite a atacantes remotos saltarles las restricciones del cajón de arena de Java y ejecutar código mediante una clase cargada que contenga caractéres \"/\" (barra) en lugar de \".\" punto, lo que evita la llamada al método del Adminstrador de Seguridad checkPackageAccess."
    }
  ],
  "lastModified": "2026-06-16T22:03:08.760",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:sun:jre:*:update3:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B86E994F-ACB5-40C7-A9AF-E0A938C3A3D3",
              "versionEndIncluding": "1.4.1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}