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CVE-2014-1776

Estado: AnalizadaCrítica (9.8)⚠ Explotación activa

Vulnerabilidad de uso después de liberación de memoria en Microsoft Internet Explorer 6 hasta la versión 11 permite a atacantes remotos ejecutar código arbitrario o provocar una denegación de servicio (corrupción de memoria) a través de vectores relacionados con la función CMarkup::IsConnectedToPrimaryMarkup, tal como fue explotado activamente en abril de 2014. NOTA: este problema se enfatizó originalmente en VGX.DLL, pero Microsoft aclaró que "VGX.DLL no contiene el código vulnerable aprovechado en esta explotación. La deshabilitación de VGX.DLL es una solución específica para la explotación que aporta una solución inmediata y efectiva para ayudar a bloquear ataques conocidos".

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).

CISA KEV — explotada activamente

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad use-after-free en IE remoto sin autenticación (AV:N/PR:N/UI:N). Explotación T1190 por aplicación expuesta. Impacto primario: ejecución arbitraria de código (T1059). Secundario: DoS por corrupción de memoria.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementFilter Network TrafficVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software Installation

Tecnologías afectadas (1)

Microsoft — Internet Explorer

CWE

Referencias

JSON original (NVD)

Mostrar
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