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OpenSSL DTLS ChangeCipherSpec Remote DoS

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OpenSSL DTLS ChangeCipherSpec Remote DoS



This module performs a Denial of Service Attack against Datagram TLS in OpenSSL version 0.9.8i and earlier. OpenSSL crashes under these versions when it receives a ChangeCipherspec Datagram before a ClientHello.


  • Jon Oberheide <jon@oberheide.org>
  • theLightCosine <theLightCosine@metasploit.com>


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/ssl/dtls_changecipherspec
msf auxiliary(dtls_changecipherspec) > show actions
msf auxiliary(dtls_changecipherspec) > set ACTION < action-name >
msf auxiliary(dtls_changecipherspec) > show options
    ...show and set options...
msf auxiliary(dtls_changecipherspec) > run 

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