module

php imap_open Remote Code Execution

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Disclosed
2018-10-23
Created
2019-03-19

Description

The imap_open function within php, if called without the /norsh flag, will attempt to preauthenticate an
IMAP session. On Debian based systems, including Ubuntu, rsh is mapped to the ssh binary. Ssh's ProxyCommand
option can be passed from imap_open to execute arbitrary commands.
While many custom applications may use imap_open, this exploit works against the following applications:
e107 v2, prestashop, SuiteCRM, as well as Custom, which simply prints the exploit strings for use.
Prestashop exploitation requires the admin URI, and administrator credentials.
suiteCRM/e107 require administrator credentials. Fixed in php 5.6.39.

Authors

Anton Lopanitsyn
Twoster
h00die
Paolo Serracino
Pietro Minniti
Damiano Proietti

Platform

Unix

Architectures

cmd

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