Bug #53591 [NEW]: exec() fails to impersonate calling context when fastcgi.impersonate is true

From: Operating system: Windows Server 2008 PHP version: 5.3.4 Package: IIS related Bug Type: Bug Bug description:exec() fails to impersonate calling context when fastcgi.impersonate is true Description: ------------ It appears that enabling fastcgi.impersonate on Windows in PHP 5.3.x does not actually impersonate the calling user when using exec() or similar. I would just get messages saying "Cannot fork", whereas in PHP 5.2.x there was no such error. Turning off fastcgi.impersonate fixed this issue, as IIS seems to run PHP in the user context of the worker process anyway. Test script: --------------- <? // This will fail when fastcgi.impersonate = 1 in PHP 5.3.x exec("c:\\path\\to\\executable.exe"); Expected result: ---------------- The file should be successfully executed if the worker process user has permission to access the EXE. Actual result: -------------- Regardless of worker process permissions, an error message saying: "Warning: exec() [function.exec]: Unable to fork [c:\path\to\executable.exe]" is encountered. -- Edit bug report at http://bugs.php.net/bug.php?id=53591&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=53591&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=53591&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=53591&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=53591&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=53591&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=53591&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=53591&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=53591&r=needscript Try newer version: http://bugs.php.net/fix.php?id=53591&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=53591&r=support Expected behavior: http://bugs.php.net/fix.php?id=53591&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=53591&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=53591&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=53591&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=53591&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=53591&r=dst IIS Stability: http://bugs.php.net/fix.php?id=53591&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=53591&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=53591&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=53591&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=53591&r=mysqlcfg