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Apache Struts 2 Forced Multi OGNL Evaluation

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Apache Struts 2 Forced Multi OGNL Evaluation



The Apache Struts framework, when forced, performs double evaluation of attributes' values assigned to certain tags attributes such as id. It is therefore possible to pass in a value to Struts that will be evaluated again when a tag's attributes are rendered. With a carefully crafted request, this can lead to Remote Code Execution (RCE). This vulnerability is application dependant. A server side template must make an affected use of request data to render an HTML tag attribute.


  • Spencer McIntyre
  • Matthias Kaiser
  • Alvaro Muñoz
  • ka1n4t


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/http/struts2_multi_eval_ognl
msf exploit(struts2_multi_eval_ognl) > show targets
msf exploit(struts2_multi_eval_ognl) > set TARGET < target-id >
msf exploit(struts2_multi_eval_ognl) > show options
    ...show and set options...
msf exploit(struts2_multi_eval_ognl) > exploit

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