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Pulse Secure VPN Arbitrary File Disclosure

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Pulse Secure VPN Arbitrary File Disclosure

Disclosed
04/24/2019
Created
11/12/2019

Description

This module exploits a pre-auth directory traversal in the Pulse Secure VPN server to dump an arbitrary file. Dumped files are stored in loot. If the "Automatic" action is set, plaintext and hashed credentials, as well as session IDs, will be dumped. Valid sessions can be hijacked by setting the "DSIG" browser cookie to a valid session ID. For the "Manual" action, please specify a file to dump via the "FILE" option. /etc/passwd will be dumped by default. If the "PRINT" option is set, file contents will be printed to the screen, with any unprintable characters replaced by a period. Please see related module exploit/linux/http/pulse_secure_cmd_exec for a post-auth exploit that can leverage the results from this module.

Author(s)

  • Orange Tsai
  • Meh Chang
  • Alyssa Herrera
  • Justin Wagner
  • wvu <wvu@metasploit.com>

Development

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 auxiliary/gather/pulse_secure_file_disclosure
msf auxiliary(pulse_secure_file_disclosure) > show actions
    ...actions...
msf auxiliary(pulse_secure_file_disclosure) > set ACTION < action-name >
msf auxiliary(pulse_secure_file_disclosure) > show options
    ...show and set options...
msf auxiliary(pulse_secure_file_disclosure) > run 

Time is precious, so I don’t want to do something manually that I can automate. Leveraging the Metasploit Framework when automating any task keeps us from having to re-create the wheel as we can use the existing libraries and focus our efforts where it matters.

– Jim O’Gorman | President, Offensive Security

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