#46437 [NEW]: data leakage because of nonexisting boundary checking in statements for MySQL41

From: hostmaster at uuims dot net Operating system: Fedora Core 4 PHP version: 5.2.6 PHP Bug Type: MySQL related Bug description: data leakage because of nonexisting boundary checking in statements for MySQL41 Description: ------------ When I run ext/mysqli/tests/bug38710.phpt with PHP 5.2.6 and MySQL 4.1.20, the scripts fails in a manner not anticipated by the test script. The $text consists of 8240 a's followed by a string of non-printable characters (cat -v shows "^@^@^@^Y^@^@^@^M ^@^@M-t^OM-TM-7M-0LM-TM-7M-^@WM^H^@^@^@^@M--M-^F^A^@^Y^@^@^@"), followed by more a's with the non-printable characters repeated every 8000 a's or so. The string $text is not equal to str_repeat('a', 8191) for mysqli_get_server_version($db)=401020, so the ACTUAL output is: int(100000) Done Thanks. Jim Reproduce code: --------------- <?php include "connect.inc"; $db = new mysqli($host, $user, $passwd, "test"); $qry=$db->stmt_init(); $qry->prepare("SELECT REPEAT('a',100000)"); $qry->execute(); $qry->bind_result($text); $qry->fetch(); if ($text !== str_repeat('a', mysqli_get_server_version($db) > 50110? 100000:(mysqli_get_server_version($db)>=50000? 8193:8191))) { var_dump(strlen($text)); } echo "Done"; ?> Expected result: ---------------- It should pass since this is expected behavior for MySQL prior to version 5.1 Actual result: -------------- It failed -- Edit bug report at http://bugs.php.net/?id=46437&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=46437&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=46437&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=46437&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=46437&r=fixedcvs Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=46437&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=46437&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=46437&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=46437&r=needscript Try newer version: http://bugs.php.net/fix.php?id=46437&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=46437&r=support Expected behavior: http://bugs.php.net/fix.php?id=46437&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=46437&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=46437&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=46437&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=46437&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=46437&r=dst IIS Stability: http://bugs.php.net/fix.php?id=46437&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=46437&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=46437&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=46437&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=46437&r=mysqlcfg