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Samba "username map script" Command Execution

This module exploits a command execution vulnerability in Samba versions 3.0.20 through 3.0.25rc3 when using the non-default "username map script" configuration option. By specifying a username containing shell meta characters, attackers can execute arbitrary commands. No authentication is needed to exploit this vulnerability since this option is used to map usernames prior to authentication!

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Module Name

exploit/multi/samba/usermap_script

Authors

  • jduck <jduck [at] metasploit.com>

References

Targets

  • Automatic

Platforms

  • unix

Architectures

  • cmd

Reliability

Development

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/samba/usermap_script msf exploit(usermap_script) > show targets ...targets... msf exploit(usermap_script) > set TARGET <target-id> msf exploit(usermap_script) > show options ...show and set options... msf exploit(usermap_script) > exploit

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