module

OpenSSL TLS 1.1 and 1.2 AES-NI DoS

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Disclosed
2013-02-05
Created
2018-05-30

Description

The AES-NI implementation of OpenSSL 1.0.1c does not properly compute the
length of an encrypted message when used with a TLS version 1.1 or above. This
leads to an integer underflow which can cause a DoS. The vulnerable function
aesni_cbc_hmac_sha1_cipher is only included in the 64-bit versions of OpenSSL.
This module has been tested successfully on Ubuntu 12.04 (64-bit) with the default
OpenSSL 1.0.1c package.

Author

Wolfgang Ettlinger wolfgang.ettlinger@gmail.com

References

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