Bug #71679 [NEW]: open_basedir is reportedly making mcrypt_create_iv() hang

From: scott at paragonie dot com Operating system: Unix-like PHP version: Irrelevant Package: Safe Mode/open_basedir Bug Type: Bug Bug description:open_basedir is reportedly making mcrypt_create_iv() hang Description: ------------ Reference: https://github.com/paragonie/random_compat/issues/90 https://github.com/paragonie/random_compat/commit/144415fe86991730ac53e727abf3701b60295607#commitcomment-16367551 Test script: --------------- // With open_basedir set to not allow reading /dev $iv = mcrypt_create_iv(16, MCRYPT_DEV_URANDOM); var_dump($iv); Expected result: ---------------- $iv should be quickly populated with 16 random bytes of data Actual result: -------------- Process hangs at 100% CPU usage -- Edit bug report at https://bugs.php.net/bug.php?id=71679&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=71679&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=71679&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=71679&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=71679&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=71679&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=71679&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=71679&r=needscript Try newer version: https://bugs.php.net/fix.php?id=71679&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=71679&r=support Expected behavior: https://bugs.php.net/fix.php?id=71679&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=71679&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=71679&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=71679&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71679&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=71679&r=dst IIS Stability: https://bugs.php.net/fix.php?id=71679&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=71679&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=71679&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=71679&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=71679&r=mysqlcfg