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Java RMI Server Insecure Default Configuration Java Code Execution

This module takes advantage of the default configuration of the RMI Registry and RMI Activation services, which allow loading classes from any remote (HTTP) URL. As it invokes a method in the RMI Distributed Garbage Collector which is available via every RMI endpoint, it can be used against both rmiregistry and rmid, and against most other (custom) RMI endpoints as well. Note that it does not work against Java Management Extension (JMX) ports since those do not support remote class loading, unless another RMI endpoint is active in the same Java process. RMI method calls do not support or require any sort of authentication.

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Module Name

exploit/multi/misc/java_rmi_server

Authors

  • mihi

References

Targets

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

Platforms

  • java
  • linux
  • osx
  • solaris
  • windows

Architectures

  • java
  • x86
  • ppc

Reliability

Development

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/misc/java_rmi_server msf exploit(java_rmi_server) > show targets ...targets... msf exploit(java_rmi_server) > set TARGET <target-id> msf exploit(java_rmi_server) > show options ...show and set options... msf exploit(java_rmi_server) > exploit

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