module

Ghostscript Failed Restore Command Execution

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Disclosed
2018-08-21
Created
2019-03-19

Description

This module exploits a -dSAFER bypass in Ghostscript to execute
arbitrary commands by handling a failed restore (grestore) in
PostScript to disable LockSafetyParams and avoid invalidaccess.

This vulnerability is reachable via libraries such as ImageMagick.

Authors

Tavis Ormandy
wvu wvu@metasploit.com

Platform

Linux,Unix,Windows

Architectures

cmd, x86, x64

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/multi/fileformat/ghostscript_failed_restore
    msf exploit(ghostscript_failed_restore) > show targets
        ...targets...
    msf exploit(ghostscript_failed_restore) > set TARGET < target-id >
    msf exploit(ghostscript_failed_restore) > show options
        ...show and set options...
    msf exploit(ghostscript_failed_restore) > exploit
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