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Klog Server authenticate.php user Unauthenticated Command Injection

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Klog Server authenticate.php user Unauthenticated Command Injection



This module exploits an unauthenticated command injection vulnerability in Klog Server versions 2.4.1 and prior. The `authenticate.php` file uses the `user` HTTP POST parameter in a call to the `shell_exec()` PHP function without appropriate input validation, allowing arbitrary command execution as the apache user. The sudo configuration permits the apache user to execute any command as root without providing a password, resulting in privileged command execution as root. This module has been successfully tested on Klog Server version 2.4.1 virtual appliance.


  • b3kc4t
  • Metin Yunus Kandemir
  • bcoles <bcoles@gmail.com>




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

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