module

tnftp "savefile" Arbitrary Command Execution

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Disclosed
2014-10-28
Created
2018-06-14

Description

This module exploits an arbitrary command execution vulnerability in
tnftp's handling of the resolved output filename - called "savefile" in
the source - from a requested resource.

If tnftp is executed without the -o command-line option, it will resolve
the output filename from the last component of the requested resource.

If the output filename begins with a "|" character, tnftp will pass the
fetched resource's output to the command directly following the "|"
character through the use of the popen() function.

Authors

Jared McNeill
wvu wvu@metasploit.com

Platform

Unix

Architectures

cmd

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 exploit/unix/http/tnftp_savefile
    msf exploit(tnftp_savefile) > show targets
        ...targets...
    msf exploit(tnftp_savefile) > set TARGET < target-id >
    msf exploit(tnftp_savefile) > show options
        ...show and set options...
    msf exploit(tnftp_savefile) > exploit
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