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    Java Applet Reflection Type Confusion Remote Code Execution

    This module abuses Java Reflection to generate a Type Confusion, due to a weak access control when setting final fields on static classes, and run code outside of the Java Sandbox. The vulnerability affects Java version 7u17 and earlier. This exploit bypasses click-to-play throw a specially crafted JNLP file. This bypass is applied mainly to IE, when Java Web Start can be launched automatically throw the ActiveX control. Otherwise the applet is launched without click-to-play bypass.

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    Module Name



    • Jeroen Frijters
    • juan vazquez <juan.vazquez [at] metasploit.com>



    • Generic (Java Payload)
    • Windows x86 (Native Payload)
    • Mac OS X x86 (Native Payload)
    • Linux x86 (Native Payload)


    • java
    • linux
    • osx
    • windows


    • java
    • x86



    Module Options

    To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

    msf > use exploit/multi/browser/java_jre17_reflection_types msf exploit(java_jre17_reflection_types) > show targets ...targets... msf exploit(java_jre17_reflection_types) > set TARGET <target-id> msf exploit(java_jre17_reflection_types) > show options ...show and set options... msf exploit(java_jre17_reflection_types) > exploit

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