Apache Struts is a Java web application framework. Apache Struts version 2 is based on WebWork 2. WebWork 2 uses XWork to invoke actions based on HTTP parameter names. The ParameterInterceptor component of XWork runs the appropriate Java method to handle each input parameter.
A security bypass vulnerability exists in the ParameterInterceptor. A remote attacker could execute arbitrary commands by setting various OGNL context variables using unicode strings in parameter names.
Upgrade to Apache Struts 2.2 or higher when available.
Exploit works on Apache Struts 188.8.131.52. The specified share must be accessible by the target.
Before the exploit can succeed, exploit.exe must be placed on the specified share. Use the Download Connection or E-mail Attachment Execution exploit tool to obtain exploit.exe, using the same shell port as used with this exploit. Due to this requirement, this exploit must be run individually and is not included during an automated penetration test.