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Quest Privilege Manager pmmasterd Buffer Overflow

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Quest Privilege Manager pmmasterd Buffer Overflow

Disclosed
04/09/2017
Created
05/30/2018

Description

This modules exploits a buffer overflow in the Quest Privilege Manager, a software used to integrate Active Directory with Linux and Unix systems. The vulnerability exists in the pmmasterd daemon, and can only triggered when the host has been configured as a policy server ( Privilege Manager for Unix or Quest Sudo Plugin). A buffer overflow condition exists when handling requests of type ACT_ALERT_EVENT, where the size of a memcpy can be controlled by the attacker. This module only works against version < 6.0.0-27. Versions up to 6.0.0-50 are also vulnerable, but not supported by this module (a stack cookie bypass is required). NOTE: To use this module it is required to be able to bind a privileged port ( <=1024 ) as the server refuses connections coming from unprivileged ports, which in most situations means that root privileges are required.

Author(s)

  • m0t

Platform

Unix

Architectures

cmd

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

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