module

PHP Laravel Framework token Unserialize Remote Command Execution

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Disclosed
2018-08-07
Created
2019-07-12

Description

This module exploits a vulnerability in the PHP Laravel Framework for versions 5.5.40, 5.6.x
Remote Command Execution is possible via a correctly formatted HTTP X-XSRF-TOKEN header, due to
an insecure unserialize call of the decrypt method in Illuminate/Encryption/Encrypter.php.
Authentication is not required, however exploitation requires knowledge of the Laravel APP_KEY.
Similar vulnerabilities appear to exist within Laravel cookie tokens based on the code fix.
In some cases the APP_KEY is leaked which allows for discovery and exploitation.

Authors

Ståle Pettersen
aushack patrick@osisecurity.com.au

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