CVE-2017-12934
Estado: ModificadaAlta (7.5)—
ext/standard/var_unserializer.re en PHP en versiones 7.0.x anteriores a la 7.0.21 y versiones 7.1.x anteriores a la 7.1.7 es propenso a un uso de memoria dinámica antes de liberación (heap use after free) al deserializar datos que no son de confianza. Esto está relacionado con la función zval_get_type en Zend/zend_types.h. La explotación de este problema puede tener un impacto sin especificar en la integridad de PHP.
CVSS
- Versión: 3.0
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 3.63%
- Percentil entre todas las CVEs puntuadas: 89
- Fecha de la puntuación: 17/10/2026
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)
CWE
- CWE-416
Referencias
- http://php.net/ChangeLog-7.php
- http://www.securityfocus.com/bid/100428
- https://access.redhat.com/errata/RHSA-2018:1296
- https://bugs.php.net/bug.php?id=74101
- https://www.debian.org/security/2018/dsa-4080
- http://php.net/ChangeLog-7.php
- http://www.securityfocus.com/bid/100428
- https://access.redhat.com/errata/RHSA-2018:1296
- https://bugs.php.net/bug.php?id=74101
- https://www.debian.org/security/2018/dsa-4080
JSON original (NVD)
Mostrar
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