CODEWITHSUNDEEP
phpsudoers
vikas gupta
vikas gupta

Reputation: 89

php shell_exec with sudo commands not working

I have made a file test.php in (/opt/lampp/htdocs/xampp/test.php) containing code 

$data = shell_exec("sudo php -v"); 
var_dump($data);

but it gives me result NULL

I am using PHP 5.6.11-1ubuntu3.1 (cli), so i have added line in /etc/sudoers file also

www-data ALL=NOPASSWD: /opt/lampp/htdocs/xampp/test.php

I have also tried by adding

www-data ALL=NOPASSWD: ALL

But nothing seems to work. Please help

Upvotes: 1

Views: 5598

Answers (3)

hamza mughal
hamza mughal

Reputation: 1

sudo adduser USERNAME

sudo usermod -aG sudo USERNAME

you need to create a new user in ubuntu if you are login with default credentials then switch to a newly created user.

Here you just need to replace USERNAME with your new one

su - USERNAME

in last you can use every command with sudo

shell_exec('echo "yourpassword" | sudo -u yourusername -S | sudo --version')

Upvotes: 0

Drew
Drew

Reputation: 41

You should change minimum uid/gid for mpm_itk module:

$ cat /etc/apache2/modules.d/00_mpm_itk.conf
<IfDefine MPM_ITK>
LoadModule mpm_itk_module modules/mpm_itk.so
#  LimitUIDRange 1000 2000
#  LimitGIDRange 1000 2000
  LimitUIDRange 0 2000
  LimitGIDRange 0 2000
</IfDefine>

Upvotes: 0

user6029681
user6029681

Reputation:

  • Edit the sudoers file (with visudo) and add a rule that allows the web server user to run the command without a password. For example:

    www-data ALL=NOPASSWD: /path/to/script

    This will allow that particular user to call sudo on that particular script without being prompted for a password.

  • Try specifying the entire path to the php binary.. /usr/bin/php, If you don't know it, find it using: which php

    $data = shell_exec("/usr/bin/php -v"); 
var_dump($data);

  • You can also check your php.ini restrict the available command set ?

    ; When safe_mode is on, only executables located in the safe_mode_exec_dir
; will be allowed to be executed via the exec family of functions.
; http://php.net/safe-mode-exec-dir
safe_mode_exec_dir =

Upvotes: 3

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