From: matt at neimeyer dot org
Operating system: Windows 2003
PHP version: 5.2.6
PHP Bug Type: Reproducible crash
Bug description: Invalid value passed to StrToTime crashes W3WP process
Description:
------------
Using a stock installation of PHP 5.2.6 (or 5.2.5 or 5.2.3) as an ISAPI
module on Windows 2003 Standard Edition x32 (fully updated using Windows
Update), if you pass a "wacky" value to strtotime the w3wp.exe (IIS Worker
Pool) spikes to 99% and crashes the web server.
We accidentally used date("-24 hours") instead of strtotime("-24 hours")
and then passed that (via some intermediary function calls) to strtotime.
It does not crash on Win2003 SE x64 (or any other operating system that we
run this application on).
I am aware of other w3wp.exe bugs being reported but those do not seem to
match this specific cause. Similarly, strtotime bugs don't seem to match.
Reproduce code:
---------------
echo strtotime(date("-24 hours"));
Expected result:
----------------
Return false or -1
(with the caveat that I know it's "bad code" on my part)
Actual result:
--------------
w3wp.exe crashes as soon as the page starts to load.
Watching in task manager on the web server, you can see w3wp.exe spike to
99% then stay there. If you kill the task the web server behaves oddly,
generating "Service Unavailable" results to the end browser until the
"World Wide Web Publishing Service" is restarted.
--
Edit bug report at http://bugs.php.net/?id=45822&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=45822&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=45822&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=45822&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=45822&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=45822&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=45822&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=45822&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=45822&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=45822&r=support
Expected behavior: http://bugs.php.net/fix.php?id=45822&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=45822&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=45822&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=45822&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=45822&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=45822&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=45822&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=45822&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=45822&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=45822&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=45822&r=mysqlcfg
