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

Edit report at http://bugs.php.net/bug.php?id=53591&edit=1 ID: 53591 User updated by: sbacsa at gmail dot com Reported by: sbacsa at gmail dot com Summary: exec() fails to impersonate calling context when fastcgi.impersonate is true Status: Bogus Type: Bug Package: IIS related Operating System: Windows Server 2008 PHP Version: 5.3.4 Block user comment: N Private report: N New Comment: I have done all of that, and that was not a solution. If you disable fastcgi.impersonate, then it will run in the user context of the worker process (whatever you set it to; I set it to a custom user account), so clearly it DOES impersonate the user, but it just does not seem to work with whatever fastcgi.impersonate tries to do. That being said, this was not an issue in PHP 5.2.x; it worked with fastcgi.impersonate and did not cause errors. All I did was replace the PHP binaries with the new version and configured IIS. There should be no reason why it should fail. Previous Comments: ------------------------------------------------------------------------ [2010-12-22 01:02:55] pajoye@php.net You have to give FCGI's php handler the permission to execute codes. Check out the IIS documentation (as far as I remember it is also documented in the PHP manual, in the IIS configuration part). ------------------------------------------------------------------------ [2010-12-22 00:10:41] sbacsa at gmail dot com 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 this bug report at http://bugs.php.net/bug.php?id=53591&edit=1