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Apache Tomcat Transfer-Encoding Information Disclosure and DoS

Apache Tomcat 5.5.0 through 5.5.29, 6.0.0 through 6.0.27, and 7.0.0 beta does not properly handle an invalid Transfer-Encoding header, which allows remote attackers to cause a denial of service (application outage) or obtain sensitive information via a crafted header that interferes with "recycling of a buffer."

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Module Name



  • Steve Jones
  • Hoagie <andi [at]>
  • Paulino Calderon <calderon [at]>




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 auxiliary/dos/http/apache_tomcat_transfer_encoding msf auxiliary(apache_tomcat_transfer_encoding) > show actions ...actions... msf auxiliary(apache_tomcat_transfer_encoding) > set ACTION <action-name> msf auxiliary(apache_tomcat_transfer_encoding) > show options and set options... msf auxiliary(apache_tomcat_transfer_encoding) > run

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