CVE-2010-0840

Vulnerabilidad no especificada en el componente Java Runtime Environment en Oracle Java SE y Java for Business 6 Update 18, 5.0 Update 23 y 1.4.2_25 permite a atacantes remotos afectar la confidencialidad, integridad y disponibilidad a través de vectores desconocidos. NOTA: la información previa fue obtenida de la CPU Marzo 2010. Oracle no ha comentado sobre alegaciones de un investigador confiable de que esto está relacionado con los controles inadecuados en la ejecución de los métodos privilegiados en Java Runtime Environment (JRE), lo que permite a atacantes ejecutar código arbitrario a través de (1) un objeto no confiable que amplía la clase de confianza, pero no ha modificado un determinado método o (2) "una problema de confianza similar con las interfaces", también conocido como "Trusted Methods Chaining Remote Code Execution Vulnerability".

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Sun Java Runtime. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the code responsible for ensuring proper privileged execution of methods. If an untrusted method in an applet attempts to call a method that requires privileges, Java will walk the call stack and for each entry verify that the method called is defined within a class that has that privilege. However, this does not take into account an untrusted object that has extended the trusted class without overwriting the target method. Additionally, this can be bypassed by abusing a similar trust issue with interfaces. An attacker can leverage these insecurities to execute vulnerable code under the context of the user invoking the JRE.

Unspecified vulnerability in the Java Runtime Environment (JRE) in Java SE component allows remote attackers to affect confidentiality, integrity, and availability via Unknown vectors.