#33220 [NEW]: Denial of service through imagecreatefromgif()

From: phpbugs at pureftpd dot org Operating system: any PHP version: 5.0.4 PHP Bug Type: GD related Bug description: Denial of service through imagecreatefromgif() Description: ------------ The following (invalid) picture triggers an infinite loop in gdImageCreateFromGif() with 100% CPU usage. Tested on Linux and OpenBSD, PHP4 with GD 1 and PHP5 with built-in GD. Reproduce code: --------------- <?php imagecreatefromgif('kaboom-gd.gif'); ?> Get kaboom-gd.gif from ftp://ftp.00f.net/misc/kaboom-gd.gif Expected result: ---------------- No 100% CPU usage. Actual result: -------------- 100% CPU usage, infinite loop. -- Edit bug report at http://bugs.php.net/?id=33220&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=33220&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=33220&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=33220&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=33220&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=33220&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=33220&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=33220&r=needscript Try newer version: http://bugs.php.net/fix.php?id=33220&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=33220&r=support Expected behavior: http://bugs.php.net/fix.php?id=33220&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=33220&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=33220&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=33220&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=33220&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=33220&r=dst IIS Stability: http://bugs.php.net/fix.php?id=33220&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=33220&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=33220&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=33220&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=33220&r=mysqlcfg