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DoS Exploitation of Allen-Bradley's Legacy Protocol (PCCC)

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DoS Exploitation of Allen-Bradley's Legacy Protocol (PCCC)

Created
03/19/2019

Description

A remote, unauthenticated attacker could send a single, specially crafted Programmable Controller Communication Commands (PCCC) packet to the controller that could potentially cause the controller to enter a DoS condition. MicroLogix 1100 controllers are affected: 1763-L16BWA, 1763-L16AWA, 1763-L16BBB, and 1763-L16DWD. CVE-2017-7924 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned.

Author(s)

  • José Diogo Monteiro <jdlopes@student.dei.uc.pt>
  • Luis Rosa <lmrosa@dei.uc.pt>
  • Miguel Borges de Freitas <miguelbf@dei.uc.pt>

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 auxiliary/dos/scada/allen_bradley_pccc
msf auxiliary(allen_bradley_pccc) > show actions
    ...actions...
msf auxiliary(allen_bradley_pccc) > set ACTION < action-name >
msf auxiliary(allen_bradley_pccc) > show options
    ...show and set options...
msf auxiliary(allen_bradley_pccc) > run

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