module

QNAP NAS/NVR Administrator Hash Disclosure

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Disclosed
2017-01-31
Created
2018-05-30

Description

This module exploits combined heap and stack buffer overflows for QNAP
NAS and NVR devices to dump the admin (root) shadow hash from memory via
an overwrite of __libc_argv[0] in the HTTP-header-bound glibc backtrace.

A binary search is performed to find the correct offset for the BOFs.
Since the server forks, blind remote exploitation is possible, provided
the heap does not have ASLR.

Authors

bashis
wvu wvu@metasploit.com
Donald Knuth

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