CVE-2012-6636
La API Android anterior a 17 no restringe debidamente el método WebView.addJavascriptInterface, lo que permite a atacantes remotos ejecutar métodos arbitrarios de objetos Java mediante el uso de la API Java Reflection dentro de código JavaScript manipulado que es subido en el componente WebView en una aplicación dirigida a API nivel 16 o anteriores, un problema relacionado con CVE-2013-4710.
CVSS
- Puntuación base
- 6.8
- Versión
- 2.0
- Vector
- AV:N/AC:M/Au:N/C:P/I:P/A:P
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días
- 38 %
- Percentil entre todas las CVEs puntuadas
- 99
- Fecha de la puntuación
- 20/10/2026
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).
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.
- Módulo de Metasploit (exploit fiable y al alcance de cualquiera) · Android Browser and WebView addJavascriptInterface Code Execution
- Publicado en Exploit-DB · Google Android 4.2 Browser and WebView - 'addJavascriptInterface' Code Execution (Metasploit) (21/12/2012)
- Prueba de concepto en GitHub (no verificada) · Lista de pruebas de concepto en GitHub
⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.
Tecnologías afectadas (1)
CWE
- CWE-264
Referencias
Mostrar las 16 referencias
- http://50.56.33.56/blog/?p=314
- http://developer.android.com/reference/android/os/Build.VERSION_CODES.html#JELLY_BEAN_MR1
- http://developer.android.com/reference/android/webkit/WebView.html#addJavascriptInterface%28java.lang.Object%2C%20java.lang.String%29
- http://jvn.jp/en/jp/JVN62161191/index.html
- http://openwall.com/lists/oss-security/2014/02/07/9
- http://www.cs.utexas.edu/~shmat/shmat_ndss14nofrak.pdf
- http://www.internetsociety.org/ndss2014/programme#session3
- https://support.lenovo.com/us/en/product_security/len_6421
- http://50.56.33.56/blog/?p=314
- http://developer.android.com/reference/android/os/Build.VERSION_CODES.html#JELLY_BEAN_MR1
- http://developer.android.com/reference/android/webkit/WebView.html#addJavascriptInterface%28java.lang.Object%2C%20java.lang.String%29
- http://jvn.jp/en/jp/JVN62161191/index.html
- http://openwall.com/lists/oss-security/2014/02/07/9
- http://www.cs.utexas.edu/~shmat/shmat_ndss14nofrak.pdf
- http://www.internetsociety.org/ndss2014/programme#session3
- https://support.lenovo.com/us/en/product_security/len_6421
JSON original (NVD)
Mostrar
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