#42176 [NEW]: security hole in language.variables.external examples

From: judas dot iscariote at gmail dot com Operating system: irrelevant PHP version: Irrelevant PHP Bug Type: Documentation problem Bug description: security hole in language.variables.external examples Description: ------------ the "Example 12.11. More complex form variables" in http://php.net/manual/en/language.variables.external.php contains a security hole. Reproduce code: --------------- says: echo '<a href="'. $_SERVER['PHP_SELF'] .'">Please try again</a>'; <form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post"> as well print_r($_POST)... Expected result: ---------------- manual teaching good practices always, PHP_SELF escaped as well $_POST not printed without escaping Actual result: -------------- a how to permit XSS in your code. -- Edit bug report at http://bugs.php.net/?id=42176&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=42176&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=42176&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=42176&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=42176&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=42176&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=42176&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=42176&r=needscript Try newer version: http://bugs.php.net/fix.php?id=42176&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=42176&r=support Expected behavior: http://bugs.php.net/fix.php?id=42176&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=42176&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=42176&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=42176&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=42176&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=42176&r=dst IIS Stability: http://bugs.php.net/fix.php?id=42176&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=42176&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=42176&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=42176&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=42176&r=mysqlcfg