module

Synology DiskStation Manager SLICEUPLOAD Remote Command Execution

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Disclosed
2013-10-31
Created
2018-05-30

Description

This module exploits a vulnerability found in Synology DiskStation Manager (DSM)
versions 4.x, which allows the execution of arbitrary commands under root
privileges.
The vulnerability is located in /webman/imageSelector.cgi, which allows to append
arbitrary data to a given file using a so called SLICEUPLOAD functionality, which
can be triggered by an unauthenticated user with a specially crafted HTTP request.
This is exploited by this module to append the given commands to /redirect.cgi,
which is a regular shell script file, and can be invoked with another HTTP request.
Synology reported that the vulnerability has been fixed with versions 4.0-2259,
4.2-3243, and 4.3-3810 Update 1, respectively; the 4.1 branch remains vulnerable.

Author

Markus Wulftange

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