WordPress Insert PHP 1.3 Code Execution

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Insert PHP WordPress Plugin allows authenticated user to execute  
arbitrary PHP  
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Marcel Vermeulen <vermeulen.mc.at.gmail.com> & Ed van der Vlies  
<ecvdvlies.at.gmail.com>, July 2016  
  
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Abstract  
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It was found that the Insert PHP WordPress Plugin allows an  
authenticated user with Contributor role (or higher) to run arbitrary  
PHP code. Consequently, this effectively disables any security controls  
implemented in WordPress.  
  
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OVE ID  
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OVE-20160712-0001  
  
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Tested versions  
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These issues were successfully tested on Insert PHP WordPress Plugin  
version 1.3.  
  
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Fix  
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There is currently no fix available. The author of the Insert PHP  
WordPress Plugin has indicated that this issue will not be  
resolved/mitigated.  
  
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Details  
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https://sumofpwn.nl/advisory/2016/insert_php_wordpress_plugin_allows_authenticated_user_to_execute_arbitrary_php.html  
  
  
  
An authenticated user with Contributor role (or higher), can make a new post and execute any command on the server. Since the privileges of a Contributor are normally restricted, using the insert_php shortcode effectively disables any security controls implemented in WordPress.  
Proof of concept  
  
Create a new post and add the following shortcode:  
  
[insert_php]eval(base64_decode('c3lzdGVtKCdjYXQgL2V0Yy9wYXNzd2QnKTs='));[/insert_php]  
  
  
  
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Summer of Pwnage (https://sumofpwn.nl) is a Dutch community project. Its  
goal is to contribute to the security of popular, widely used OSS  
projects in a fun and educational way.  
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