What are the potential security risks of using PHP to execute Bash commands with sudo privileges on a Linux system?

When using PHP to execute Bash commands with sudo privileges on a Linux system, there is a potential security risk of allowing unauthorized users to execute arbitrary commands with elevated privileges. To mitigate this risk, it is recommended to use a secure method of executing commands with sudo, such as using the `proc_open` function with proper input validation and sanitization. 

$command = "sudo ls -la";
$descriptorspec = array(
   0 => array("pipe", "r"),  // stdin is a pipe that the child will read from
   1 => array("pipe", "w"),  // stdout is a pipe that the child will write to
   2 => array("pipe", "w")   // stderr is a pipe that the child will write to
);

$process = proc_open($command, $descriptorspec, $pipes);

if (is_resource($process)) {
   while ($s = fgets($pipes[1])) {
       print $s;
   }
}

Keywords

PHP Bash commands sudo privileges security risks Linux system

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